{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2022-48970", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-08-22T01:27:53.629Z", "datePublished": "2024-10-21T20:05:51.703Z", "dateUpdated": "2025-05-04T08:27:09.345Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-05-04T08:27:09.345Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\naf_unix: Get user_ns from in_skb in unix_diag_get_exact().\n\nWei Chen reported a NULL deref in sk_user_ns() [0][1], and Paolo diagnosed\nthe root cause: in unix_diag_get_exact(), the newly allocated skb does not\nhave sk. [2]\n\nWe must get the user_ns from the NETLINK_CB(in_skb).sk and pass it to\nsk_diag_fill().\n\n[0]:\nBUG: kernel NULL pointer dereference, address: 0000000000000270\n#PF: supervisor read access in kernel mode\n#PF: error_code(0x0000) - not-present page\nPGD 12bbce067 P4D 12bbce067 PUD 12bc40067 PMD 0\nOops: 0000 [#1] PREEMPT SMP\nCPU: 0 PID: 27942 Comm: syz-executor.0 Not tainted 6.1.0-rc5-next-20221118 #2\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS\nrel-1.13.0-48-gd9c812dda519-prebuilt.qemu.org 04/01/2014\nRIP: 0010:sk_user_ns include/net/sock.h:920 [inline]\nRIP: 0010:sk_diag_dump_uid net/unix/diag.c:119 [inline]\nRIP: 0010:sk_diag_fill+0x77d/0x890 net/unix/diag.c:170\nCode: 89 ef e8 66 d4 2d fd c7 44 24 40 00 00 00 00 49 8d 7c 24 18 e8\n54 d7 2d fd 49 8b 5c 24 18 48 8d bb 70 02 00 00 e8 43 d7 2d fd <48> 8b\n9b 70 02 00 00 48 8d 7b 10 e8 33 d7 2d fd 48 8b 5b 10 48 8d\nRSP: 0018:ffffc90000d67968 EFLAGS: 00010246\nRAX: ffff88812badaa48 RBX: 0000000000000000 RCX: ffffffff840d481d\nRDX: 0000000000000465 RSI: 0000000000000000 RDI: 0000000000000270\nRBP: ffffc90000d679a8 R08: 0000000000000277 R09: 0000000000000000\nR10: 0001ffffffffffff R11: 0001c90000d679a8 R12: ffff88812ac03800\nR13: ffff88812c87c400 R14: ffff88812ae42210 R15: ffff888103026940\nFS: 00007f08b4e6f700(0000) GS:ffff88813bc00000(0000) knlGS:0000000000000000\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 0000000000000270 CR3: 000000012c58b000 CR4: 00000000003506f0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\nCall Trace:\n <TASK>\n unix_diag_get_exact net/unix/diag.c:285 [inline]\n unix_diag_handler_dump+0x3f9/0x500 net/unix/diag.c:317\n __sock_diag_cmd net/core/sock_diag.c:235 [inline]\n sock_diag_rcv_msg+0x237/0x250 net/core/sock_diag.c:266\n netlink_rcv_skb+0x13e/0x250 net/netlink/af_netlink.c:2564\n sock_diag_rcv+0x24/0x40 net/core/sock_diag.c:277\n netlink_unicast_kernel net/netlink/af_netlink.c:1330 [inline]\n netlink_unicast+0x5e9/0x6b0 net/netlink/af_netlink.c:1356\n netlink_sendmsg+0x739/0x860 net/netlink/af_netlink.c:1932\n sock_sendmsg_nosec net/socket.c:714 [inline]\n sock_sendmsg net/socket.c:734 [inline]\n ____sys_sendmsg+0x38f/0x500 net/socket.c:2476\n ___sys_sendmsg net/socket.c:2530 [inline]\n __sys_sendmsg+0x197/0x230 net/socket.c:2559\n __do_sys_sendmsg net/socket.c:2568 [inline]\n __se_sys_sendmsg net/socket.c:2566 [inline]\n __x64_sys_sendmsg+0x42/0x50 net/socket.c:2566\n do_syscall_x64 arch/x86/entry/common.c:50 [inline]\n do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80\n entry_SYSCALL_64_after_hwframe+0x63/0xcd\nRIP: 0033:0x4697f9\nCode: f7 d8 64 89 02 b8 ff ff ff ff c3 66 0f 1f 44 00 00 48 89 f8 48\n89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d\n01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48\nRSP: 002b:00007f08b4e6ec48 EFLAGS: 00000246 ORIG_RAX: 000000000000002e\nRAX: ffffffffffffffda RBX: 000000000077bf80 RCX: 00000000004697f9\nRDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000000000003\nRBP: 00000000004d29e9 R08: 0000000000000000 R09: 0000000000000000\nR10: 0000000000000000 R11: 0000000000000246 R12: 000000000077bf80\nR13: 0000000000000000 R14: 000000000077bf80 R15: 00007ffdb36bc6c0\n </TASK>\nModules linked in:\nCR2: 0000000000000270\n\n[1]: https://lore.kernel.org/netdev/CAO4mrfdvyjFpokhNsiwZiP-wpdSD0AStcJwfKcKQdAALQ9_2Qw@mail.gmail.com/\n[2]: https://lore.kernel.org/netdev/e04315e7c90d9a75613f3993c2baf2d344eef7eb.camel@redhat.com/"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/unix/diag.c"], "versions": [{"version": "cae9910e73446cac68a54e3a7b02aaa12b689026", "lessThan": "c66d78aee55dab72c92020ebfbebc464d4f5dd2a", "status": "affected", "versionType": "git"}, {"version": "cae9910e73446cac68a54e3a7b02aaa12b689026", "lessThan": "575a6266f63dbb3b8eb1da03671451f0d81b8034", "status": "affected", "versionType": "git"}, {"version": "cae9910e73446cac68a54e3a7b02aaa12b689026", "lessThan": "5c014eb0ed6c8c57f483e94cc6e90f34ce426d91", "status": "affected", "versionType": "git"}, {"version": "cae9910e73446cac68a54e3a7b02aaa12b689026", "lessThan": "9c1d6f79a2c7b8221dcec27defc6dc461052ead4", "status": "affected", "versionType": "git"}, {"version": "cae9910e73446cac68a54e3a7b02aaa12b689026", "lessThan": "b3abe42e94900bdd045c472f9c9be620ba5ce553", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/unix/diag.c"], "versions": [{"version": "5.3", "status": "affected"}, {"version": "0", "lessThan": "5.3", "status": "unaffected", "versionType": "semver"}, {"version": "5.4.227", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.159", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.83", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.0.13", "lessThanOrEqual": "6.0.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.3", "versionEndExcluding": "5.4.227"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.3", "versionEndExcluding": "5.10.159"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.3", "versionEndExcluding": "5.15.83"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.3", "versionEndExcluding": "6.0.13"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.3", "versionEndExcluding": "6.1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/c66d78aee55dab72c92020ebfbebc464d4f5dd2a"}, {"url": "https://git.kernel.org/stable/c/575a6266f63dbb3b8eb1da03671451f0d81b8034"}, {"url": "https://git.kernel.org/stable/c/5c014eb0ed6c8c57f483e94cc6e90f34ce426d91"}, {"url": "https://git.kernel.org/stable/c/9c1d6f79a2c7b8221dcec27defc6dc461052ead4"}, {"url": "https://git.kernel.org/stable/c/b3abe42e94900bdd045c472f9c9be620ba5ce553"}], "title": "af_unix: Get user_ns from in_skb in unix_diag_get_exact().", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2022-48970", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-10-22T13:19:15.629837Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-10-22T13:28:37.951Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2022-48970", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-10-22T13:19:15.629837Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-10-22T13:19:18.687Z"}}], "cna": {"title": "af_unix: Get user_ns from in_skb in unix_diag_get_exact().", "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "cae9910e73446cac68a54e3a7b02aaa12b689026", "lessThan": "c66d78aee55dab72c92020ebfbebc464d4f5dd2a", "versionType": "git"}, {"status": "affected", "version": "cae9910e73446cac68a54e3a7b02aaa12b689026", "lessThan": "575a6266f63dbb3b8eb1da03671451f0d81b8034", "versionType": "git"}, {"status": "affected", "version": "cae9910e73446cac68a54e3a7b02aaa12b689026", "lessThan": "5c014eb0ed6c8c57f483e94cc6e90f34ce426d91", "versionType": "git"}, {"status": "affected", "version": "cae9910e73446cac68a54e3a7b02aaa12b689026", "lessThan": "9c1d6f79a2c7b8221dcec27defc6dc461052ead4", "versionType": "git"}, {"status": "affected", "version": "cae9910e73446cac68a54e3a7b02aaa12b689026", "lessThan": "b3abe42e94900bdd045c472f9c9be620ba5ce553", "versionType": "git"}], "programFiles": ["net/unix/diag.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "5.3"}, {"status": "unaffected", "version": "0", "lessThan": "5.3", "versionType": "semver"}, {"status": "unaffected", "version": "5.4.227", "versionType": "semver", "lessThanOrEqual": "5.4.*"}, {"status": "unaffected", "version": "5.10.159", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.83", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.0.13", "versionType": "semver", "lessThanOrEqual": "6.0.*"}, {"status": "unaffected", "version": "6.1", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["net/unix/diag.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/c66d78aee55dab72c92020ebfbebc464d4f5dd2a"}, {"url": "https://git.kernel.org/stable/c/575a6266f63dbb3b8eb1da03671451f0d81b8034"}, {"url": "https://git.kernel.org/stable/c/5c014eb0ed6c8c57f483e94cc6e90f34ce426d91"}, {"url": "https://git.kernel.org/stable/c/9c1d6f79a2c7b8221dcec27defc6dc461052ead4"}, {"url": "https://git.kernel.org/stable/c/b3abe42e94900bdd045c472f9c9be620ba5ce553"}], "x_generator": {"engine": "bippy-5f407fcff5a0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\naf_unix: Get user_ns from in_skb in unix_diag_get_exact().\n\nWei Chen reported a NULL deref in sk_user_ns() [0][1], and Paolo diagnosed\nthe root cause: in unix_diag_get_exact(), the newly allocated skb does not\nhave sk. [2]\n\nWe must get the user_ns from the NETLINK_CB(in_skb).sk and pass it to\nsk_diag_fill().\n\n[0]:\nBUG: kernel NULL pointer dereference, address: 0000000000000270\n#PF: supervisor read access in kernel mode\n#PF: error_code(0x0000) - not-present page\nPGD 12bbce067 P4D 12bbce067 PUD 12bc40067 PMD 0\nOops: 0000 [#1] PREEMPT SMP\nCPU: 0 PID: 27942 Comm: syz-executor.0 Not tainted 6.1.0-rc5-next-20221118 #2\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS\nrel-1.13.0-48-gd9c812dda519-prebuilt.qemu.org 04/01/2014\nRIP: 0010:sk_user_ns include/net/sock.h:920 [inline]\nRIP: 0010:sk_diag_dump_uid net/unix/diag.c:119 [inline]\nRIP: 0010:sk_diag_fill+0x77d/0x890 net/unix/diag.c:170\nCode: 89 ef e8 66 d4 2d fd c7 44 24 40 00 00 00 00 49 8d 7c 24 18 e8\n54 d7 2d fd 49 8b 5c 24 18 48 8d bb 70 02 00 00 e8 43 d7 2d fd <48> 8b\n9b 70 02 00 00 48 8d 7b 10 e8 33 d7 2d fd 48 8b 5b 10 48 8d\nRSP: 0018:ffffc90000d67968 EFLAGS: 00010246\nRAX: ffff88812badaa48 RBX: 0000000000000000 RCX: ffffffff840d481d\nRDX: 0000000000000465 RSI: 0000000000000000 RDI: 0000000000000270\nRBP: ffffc90000d679a8 R08: 0000000000000277 R09: 0000000000000000\nR10: 0001ffffffffffff R11: 0001c90000d679a8 R12: ffff88812ac03800\nR13: ffff88812c87c400 R14: ffff88812ae42210 R15: ffff888103026940\nFS: 00007f08b4e6f700(0000) GS:ffff88813bc00000(0000) knlGS:0000000000000000\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 0000000000000270 CR3: 000000012c58b000 CR4: 00000000003506f0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\nCall Trace:\n <TASK>\n unix_diag_get_exact net/unix/diag.c:285 [inline]\n unix_diag_handler_dump+0x3f9/0x500 net/unix/diag.c:317\n __sock_diag_cmd net/core/sock_diag.c:235 [inline]\n sock_diag_rcv_msg+0x237/0x250 net/core/sock_diag.c:266\n netlink_rcv_skb+0x13e/0x250 net/netlink/af_netlink.c:2564\n sock_diag_rcv+0x24/0x40 net/core/sock_diag.c:277\n netlink_unicast_kernel net/netlink/af_netlink.c:1330 [inline]\n netlink_unicast+0x5e9/0x6b0 net/netlink/af_netlink.c:1356\n netlink_sendmsg+0x739/0x860 net/netlink/af_netlink.c:1932\n sock_sendmsg_nosec net/socket.c:714 [inline]\n sock_sendmsg net/socket.c:734 [inline]\n ____sys_sendmsg+0x38f/0x500 net/socket.c:2476\n ___sys_sendmsg net/socket.c:2530 [inline]\n __sys_sendmsg+0x197/0x230 net/socket.c:2559\n __do_sys_sendmsg net/socket.c:2568 [inline]\n __se_sys_sendmsg net/socket.c:2566 [inline]\n __x64_sys_sendmsg+0x42/0x50 net/socket.c:2566\n do_syscall_x64 arch/x86/entry/common.c:50 [inline]\n do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80\n entry_SYSCALL_64_after_hwframe+0x63/0xcd\nRIP: 0033:0x4697f9\nCode: f7 d8 64 89 02 b8 ff ff ff ff c3 66 0f 1f 44 00 00 48 89 f8 48\n89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d\n01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48\nRSP: 002b:00007f08b4e6ec48 EFLAGS: 00000246 ORIG_RAX: 000000000000002e\nRAX: ffffffffffffffda RBX: 000000000077bf80 RCX: 00000000004697f9\nRDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000000000003\nRBP: 00000000004d29e9 R08: 0000000000000000 R09: 0000000000000000\nR10: 0000000000000000 R11: 0000000000000246 R12: 000000000077bf80\nR13: 0000000000000000 R14: 000000000077bf80 R15: 00007ffdb36bc6c0\n </TASK>\nModules linked in:\nCR2: 0000000000000270\n\n[1]: https://lore.kernel.org/netdev/CAO4mrfdvyjFpokhNsiwZiP-wpdSD0AStcJwfKcKQdAALQ9_2Qw@mail.gmail.com/\n[2]: https://lore.kernel.org/netdev/e04315e7c90d9a75613f3993c2baf2d344eef7eb.camel@redhat.com/"}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2024-12-19T08:11:36.563Z"}}}, "cveMetadata": {"cveId": "CVE-2022-48970", "state": "PUBLISHED", "dateUpdated": "2024-12-19T08:11:36.563Z", "dateReserved": "2024-08-22T01:27:53.629Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2024-10-21T20:05:51.703Z", "assignerShortName": "Linux"}, "dataVersion": "5.1"}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "AB721816-DC8C-4872-90CD-02D2105999D9", "versionEndExcluding": "5.4.227", "versionStartIncluding": "5.3", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "7318B597-DFFD-4BBC-A947-539D6E30D82A", "versionEndExcluding": "5.10.159", "versionStartIncluding": "5.5", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "90897BD1-104D-4CFF-94F5-29F9041217FB", "versionEndExcluding": "5.15.83", "versionStartIncluding": "5.11", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "389392A7-81C4-4C26-884B-8C7CF0F53DA4", "versionEndExcluding": "6.0.13", "versionStartIncluding": "5.16", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc1:*:*:*:*:*:*", "matchCriteriaId": "E7E331DA-1FB0-4DEC-91AC-7DA69D461C11", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc2:*:*:*:*:*:*", "matchCriteriaId": "17F0B248-42CF-4AE6-A469-BB1BAE7F4705", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc3:*:*:*:*:*:*", "matchCriteriaId": "E2422816-0C14-4B5E-A1E6-A9D776E5C49B", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc4:*:*:*:*:*:*", "matchCriteriaId": "1C6E00FE-5FB9-4D20-A1A1-5A32128F9B76", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc5:*:*:*:*:*:*", "matchCriteriaId": "35B26BE4-43A6-4A36-A7F6-5B3F572D9186", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc6:*:*:*:*:*:*", "matchCriteriaId": "3FFFB0B3-930D-408A-91E2-BAE0C2715D80", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc7:*:*:*:*:*:*", "matchCriteriaId": "8535320E-A0DB-4277-800E-D0CE5BBA59E8", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc8:*:*:*:*:*:*", "matchCriteriaId": "21718AA4-4056-40F2-968E-BDAA465A7872", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\naf_unix: Get user_ns from in_skb in unix_diag_get_exact().\n\nWei Chen reported a NULL deref in sk_user_ns() [0][1], and Paolo diagnosed\nthe root cause: in unix_diag_get_exact(), the newly allocated skb does not\nhave sk. [2]\n\nWe must get the user_ns from the NETLINK_CB(in_skb).sk and pass it to\nsk_diag_fill().\n\n[0]:\nBUG: kernel NULL pointer dereference, address: 0000000000000270\n#PF: supervisor read access in kernel mode\n#PF: error_code(0x0000) - not-present page\nPGD 12bbce067 P4D 12bbce067 PUD 12bc40067 PMD 0\nOops: 0000 [#1] PREEMPT SMP\nCPU: 0 PID: 27942 Comm: syz-executor.0 Not tainted 6.1.0-rc5-next-20221118 #2\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS\nrel-1.13.0-48-gd9c812dda519-prebuilt.qemu.org 04/01/2014\nRIP: 0010:sk_user_ns include/net/sock.h:920 [inline]\nRIP: 0010:sk_diag_dump_uid net/unix/diag.c:119 [inline]\nRIP: 0010:sk_diag_fill+0x77d/0x890 net/unix/diag.c:170\nCode: 89 ef e8 66 d4 2d fd c7 44 24 40 00 00 00 00 49 8d 7c 24 18 e8\n54 d7 2d fd 49 8b 5c 24 18 48 8d bb 70 02 00 00 e8 43 d7 2d fd <48> 8b\n9b 70 02 00 00 48 8d 7b 10 e8 33 d7 2d fd 48 8b 5b 10 48 8d\nRSP: 0018:ffffc90000d67968 EFLAGS: 00010246\nRAX: ffff88812badaa48 RBX: 0000000000000000 RCX: ffffffff840d481d\nRDX: 0000000000000465 RSI: 0000000000000000 RDI: 0000000000000270\nRBP: ffffc90000d679a8 R08: 0000000000000277 R09: 0000000000000000\nR10: 0001ffffffffffff R11: 0001c90000d679a8 R12: ffff88812ac03800\nR13: ffff88812c87c400 R14: ffff88812ae42210 R15: ffff888103026940\nFS: 00007f08b4e6f700(0000) GS:ffff88813bc00000(0000) knlGS:0000000000000000\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 0000000000000270 CR3: 000000012c58b000 CR4: 00000000003506f0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\nCall Trace:\n <TASK>\n unix_diag_get_exact net/unix/diag.c:285 [inline]\n unix_diag_handler_dump+0x3f9/0x500 net/unix/diag.c:317\n __sock_diag_cmd net/core/sock_diag.c:235 [inline]\n sock_diag_rcv_msg+0x237/0x250 net/core/sock_diag.c:266\n netlink_rcv_skb+0x13e/0x250 net/netlink/af_netlink.c:2564\n sock_diag_rcv+0x24/0x40 net/core/sock_diag.c:277\n netlink_unicast_kernel net/netlink/af_netlink.c:1330 [inline]\n netlink_unicast+0x5e9/0x6b0 net/netlink/af_netlink.c:1356\n netlink_sendmsg+0x739/0x860 net/netlink/af_netlink.c:1932\n sock_sendmsg_nosec net/socket.c:714 [inline]\n sock_sendmsg net/socket.c:734 [inline]\n ____sys_sendmsg+0x38f/0x500 net/socket.c:2476\n ___sys_sendmsg net/socket.c:2530 [inline]\n __sys_sendmsg+0x197/0x230 net/socket.c:2559\n __do_sys_sendmsg net/socket.c:2568 [inline]\n __se_sys_sendmsg net/socket.c:2566 [inline]\n __x64_sys_sendmsg+0x42/0x50 net/socket.c:2566\n do_syscall_x64 arch/x86/entry/common.c:50 [inline]\n do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80\n entry_SYSCALL_64_after_hwframe+0x63/0xcd\nRIP: 0033:0x4697f9\nCode: f7 d8 64 89 02 b8 ff ff ff ff c3 66 0f 1f 44 00 00 48 89 f8 48\n89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d\n01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48\nRSP: 002b:00007f08b4e6ec48 EFLAGS: 00000246 ORIG_RAX: 000000000000002e\nRAX: ffffffffffffffda RBX: 000000000077bf80 RCX: 00000000004697f9\nRDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000000000003\nRBP: 00000000004d29e9 R08: 0000000000000000 R09: 0000000000000000\nR10: 0000000000000000 R11: 0000000000000246 R12: 000000000077bf80\nR13: 0000000000000000 R14: 000000000077bf80 R15: 00007ffdb36bc6c0\n </TASK>\nModules linked in:\nCR2: 0000000000000270\n\n[1]: https://lore.kernel.org/netdev/CAO4mrfdvyjFpokhNsiwZiP-wpdSD0AStcJwfKcKQdAALQ9_2Qw@mail.gmail.com/\n[2]: https://lore.kernel.org/netdev/e04315e7c90d9a75613f3993c2baf2d344eef7eb.camel@redhat.com/"}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: af_unix: Obtener user_ns de in_skb en unix_diag_get_exact(). Wei Chen inform\u00f3 una desreferencia NULL en sk_user_ns() [0][1], y Paolo diagnostic\u00f3 la causa ra\u00edz: en unix_diag_get_exact(), el skb reci\u00e9n asignado no tiene sk. [2] Debemos obtener el user_ns de NETLINK_CB(in_skb).sk y pasarlo a sk_diag_fill(). [0]: ERROR: desreferencia de puntero NULL del n\u00facleo, direcci\u00f3n: 0000000000000270 #PF: acceso de lectura del supervisor en modo n\u00facleo #PF: error_code(0x0000) - p\u00e1gina no presente PGD 12bbce067 P4D 12bbce067 PUD 12bc40067 PMD 0 Oops: 0000 [#1] PREEMPT SMP CPU: 0 PID: 27942 Comm: syz-executor.0 No contaminado 6.1.0-rc5-next-20221118 #2 Nombre del hardware: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.13.0-48-gd9c812dda519-prebuilt.qemu.org 04/01/2014 RIP: 0010:sk_user_ns include/net/sock.h:920 [en l\u00ednea] RIP: 0010:sk_diag_dump_uid net/unix/diag.c:119 [en l\u00ednea] RIP: 0010:sk_diag_fill+0x77d/0x890 net/unix/diag.c:170 C\u00f3digo: 89 ef e8 66 d4 2d fd c7 44 24 40 00 00 00 00 49 8d 7c 24 18 e8 54 d7 2d fd 49 8b 5c 24 18 48 8d bb 70 02 00 00 e8 43 d7 2d fd &lt;48&gt; 8b 9b 70 02 00 00 48 8d 7b 10 e8 33 d7 2d fd 48 8b 5b 10 48 8d RSP: 0018:ffffc90000d67968 EFLAGS: 00010246 RAX: ffff88812badaa48 RBX: 0000000000000000 RCX: ff840d481d RDX: 0000000000000465 RSI: 0000000000000000 RDI: 0000000000000270 RBP: ffffc90000d679a8 R08: 0000000000000277 R09: 0000000000000000 R10: 0001ffffffffffff R11: 0001c90000d679a8 R12: ffff88812ac03800 R13: ffff88812c87c400 R14: ffff88812ae42210 R15: ffff888103026940 FS: 00007f08b4e6f700(0000) GS:ffff88813bc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000270 CR3: 000000012c58b000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Seguimiento de llamadas: unix_diag_get_exact net/unix/diag.c:285 [en l\u00ednea] unix_diag_handler_dump+0x3f9/0x500 net/unix/diag.c:317 __sock_diag_cmd net/core/sock_diag.c:235 [en l\u00ednea] sock_diag_rcv_msg+0x237/0x250 net/core/sock_diag.c:266 netlink_rcv_skb+0x13e/0x250 net/netlink/af_netlink.c:2564 sock_diag_rcv+0x24/0x40 net/core/sock_diag.c:277 netlink_unicast_kernel net/netlink/af_netlink.c:1330 [en l\u00ednea] netlink_unicast+0x5e9/0x6b0 net/netlink/af_netlink.c:1356 netlink_sendmsg+0x739/0x860 net/netlink/af_netlink.c:1932 sock_sendmsg_nosec net/socket.c:714 [en l\u00ednea] sock_sendmsg net/socket.c:734 [en l\u00ednea] ____sys_sendmsg+0x38f/0x500 net/socket.c:2476 ___sys_sendmsg net/socket.c:2530 [en l\u00ednea] __sys_sendmsg+0x197/0x230 net/socket.c:2559 __do_sys_sendmsg net/socket.c:2568 [en l\u00ednea] __se_sys_sendmsg net/socket.c:2566 [en l\u00ednea] __x64_sys_sendmsg+0x42/0x50 net/socket.c:2566 do_syscall_x64 arch/x86/entry/common.c:50 [en l\u00ednea] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x4697f9 C\u00f3digo: f7 d8 64 89 02 b8 ff ff ff ff c3 66 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 &lt;48&gt; 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f08b4e6ec48 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000077bf80 RCX: 00000000004697f9 RDX: 000000000000000 RSI: 00000000200001c0 RDI: 000000000000003 RBP: 00000000004d29e9 R08: 0000000000000000 R09: 000000000000000 R10: 00000000000000000 R11: 0000000000000246 R12: 000000000077bf80 R13: 0000000000000000 R14: 000000000077bf80 R15: 00007ffdb36bc6c0 M\u00f3dulos vinculados en: CR2: 0000000000000270 [1]: https://lore.kernel.org/netdev/CAO4mrfdvyjFpokhNsiwZiP-wpdSD0AStcJwfKcKQdAALQ9_2Qw@mail.gmail.com/ [2]: https://lore.kernel.org/netdev/e04315e7c90d9a75613f3993c2baf2d344eef7eb.camel@redhat.com/"}], "id": "CVE-2022-48970", "lastModified": "2024-10-25T15:24:22.060", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2024-10-21T20:15:09.177", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/575a6266f63dbb3b8eb1da03671451f0d81b8034"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/5c014eb0ed6c8c57f483e94cc6e90f34ce426d91"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/9c1d6f79a2c7b8221dcec27defc6dc461052ead4"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/b3abe42e94900bdd045c472f9c9be620ba5ce553"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/c66d78aee55dab72c92020ebfbebc464d4f5dd2a"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-476"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: af_unix: Get user_ns from in_skb in unix_diag_get_exact().", "id": "2320731", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2320731"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-476", "details": ["In the Linux kernel, the following vulnerability has been resolved:\naf_unix: Get user_ns from in_skb in unix_diag_get_exact().\nWei Chen reported a NULL deref in sk_user_ns() [0][1], and Paolo diagnosed\nthe root cause: in unix_diag_get_exact(), the newly allocated skb does not\nhave sk. [2]\nWe must get the user_ns from the NETLINK_CB(in_skb).sk and pass it to\nsk_diag_fill().\n[0]:\nBUG: kernel NULL pointer dereference, address: 0000000000000270\n#PF: supervisor read access in kernel mode\n#PF: error_code(0x0000) - not-present page\nPGD 12bbce067 P4D 12bbce067 PUD 12bc40067 PMD 0\nOops: 0000 [#1] PREEMPT SMP\nCPU: 0 PID: 27942 Comm: syz-executor.0 Not tainted 6.1.0-rc5-next-20221118 #2\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS\nrel-1.13.0-48-gd9c812dda519-prebuilt.qemu.org 04/01/2014\nRIP: 0010:sk_user_ns include/net/sock.h:920 [inline]\nRIP: 0010:sk_diag_dump_uid net/unix/diag.c:119 [inline]\nRIP: 0010:sk_diag_fill+0x77d/0x890 net/unix/diag.c:170\nCode: 89 ef e8 66 d4 2d fd c7 44 24 40 00 00 00 00 49 8d 7c 24 18 e8\n54 d7 2d fd 49 8b 5c 24 18 48 8d bb 70 02 00 00 e8 43 d7 2d fd <48> 8b\n9b 70 02 00 00 48 8d 7b 10 e8 33 d7 2d fd 48 8b 5b 10 48 8d\nRSP: 0018:ffffc90000d67968 EFLAGS: 00010246\nRAX: ffff88812badaa48 RBX: 0000000000000000 RCX: ffffffff840d481d\nRDX: 0000000000000465 RSI: 0000000000000000 RDI: 0000000000000270\nRBP: ffffc90000d679a8 R08: 0000000000000277 R09: 0000000000000000\nR10: 0001ffffffffffff R11: 0001c90000d679a8 R12: ffff88812ac03800\nR13: ffff88812c87c400 R14: ffff88812ae42210 R15: ffff888103026940\nFS: 00007f08b4e6f700(0000) GS:ffff88813bc00000(0000) knlGS:0000000000000000\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 0000000000000270 CR3: 000000012c58b000 CR4: 00000000003506f0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\nCall Trace:\n<TASK>\nunix_diag_get_exact net/unix/diag.c:285 [inline]\nunix_diag_handler_dump+0x3f9/0x500 net/unix/diag.c:317\n__sock_diag_cmd net/core/sock_diag.c:235 [inline]\nsock_diag_rcv_msg+0x237/0x250 net/core/sock_diag.c:266\nnetlink_rcv_skb+0x13e/0x250 net/netlink/af_netlink.c:2564\nsock_diag_rcv+0x24/0x40 net/core/sock_diag.c:277\nnetlink_unicast_kernel net/netlink/af_netlink.c:1330 [inline]\nnetlink_unicast+0x5e9/0x6b0 net/netlink/af_netlink.c:1356\nnetlink_sendmsg+0x739/0x860 net/netlink/af_netlink.c:1932\nsock_sendmsg_nosec net/socket.c:714 [inline]\nsock_sendmsg net/socket.c:734 [inline]\n____sys_sendmsg+0x38f/0x500 net/socket.c:2476\n___sys_sendmsg net/socket.c:2530 [inline]\n__sys_sendmsg+0x197/0x230 net/socket.c:2559\n__do_sys_sendmsg net/socket.c:2568 [inline]\n__se_sys_sendmsg net/socket.c:2566 [inline]\n__x64_sys_sendmsg+0x42/0x50 net/socket.c:2566\ndo_syscall_x64 arch/x86/entry/common.c:50 [inline]\ndo_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80\nentry_SYSCALL_64_after_hwframe+0x63/0xcd\nRIP: 0033:0x4697f9\nCode: f7 d8 64 89 02 b8 ff ff ff ff c3 66 0f 1f 44 00 00 48 89 f8 48\n89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d\n01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48\nRSP: 002b:00007f08b4e6ec48 EFLAGS: 00000246 ORIG_RAX: 000000000000002e\nRAX: ffffffffffffffda RBX: 000000000077bf80 RCX: 00000000004697f9\nRDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000000000003\nRBP: 00000000004d29e9 R08: 0000000000000000 R09: 0000000000000000\nR10: 0000000000000000 R11: 0000000000000246 R12: 000000000077bf80\nR13: 0000000000000000 R14: 000000000077bf80 R15: 00007ffdb36bc6c0\n</TASK>\nModules linked in:\nCR2: 0000000000000270\n[1]: https://lore.kernel.org/netdev/CAO4mrfdvyjFpokhNsiwZiP-wpdSD0AStcJwfKcKQdAALQ9_2Qw@mail.gmail.com/\n[2]: https://lore.kernel.org/netdev/e04315e7c90d9a75613f3993c2baf2d344eef7eb.camel@redhat.com/"], "name": "CVE-2022-48970", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-10-21T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2022-48970\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-48970\nhttps://lore.kernel.org/linux-cve-announce/2024102144-CVE-2022-48970-7c96@gregkh/T"], "threat_severity": "Moderate"}

{}