{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2021-47266", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-05-21T13:27:52.126Z", "datePublished": "2024-05-21T14:19:57.249Z", "dateUpdated": "2025-05-04T12:41:19.900Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-05-04T12:41:19.900Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/ipoib: Fix warning caused by destroying non-initial netns\n\nAfter the commit 5ce2dced8e95 (\"RDMA/ipoib: Set rtnl_link_ops for ipoib\ninterfaces\"), if the IPoIB device is moved to non-initial netns,\ndestroying that netns lets the device vanish instead of moving it back to\nthe initial netns, This is happening because default_device_exit() skips\nthe interfaces due to having rtnl_link_ops set.\n\nSteps to reporoduce:\n ip netns add foo\n ip link set mlx5_ib0 netns foo\n ip netns delete foo\n\nWARNING: CPU: 1 PID: 704 at net/core/dev.c:11435 netdev_exit+0x3f/0x50\nModules linked in: xt_CHECKSUM xt_MASQUERADE xt_conntrack ipt_REJECT\nnf_reject_ipv4 nft_compat nft_counter nft_chain_nat nf_nat nf_conntrack\nnf_defrag_ipv6 nf_defrag_ipv4 nf_tables nfnetlink tun d\n fuse\nCPU: 1 PID: 704 Comm: kworker/u64:3 Tainted: G S W 5.13.0-rc1+ #1\nHardware name: Dell Inc. PowerEdge R630/02C2CP, BIOS 2.1.5 04/11/2016\nWorkqueue: netns cleanup_net\nRIP: 0010:netdev_exit+0x3f/0x50\nCode: 48 8b bb 30 01 00 00 e8 ef 81 b1 ff 48 81 fb c0 3a 54 a1 74 13 48\n8b 83 90 00 00 00 48 81 c3 90 00 00 00 48 39 d8 75 02 5b c3 <0f> 0b 5b\nc3 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 0f 1f 44 00\nRSP: 0018:ffffb297079d7e08 EFLAGS: 00010206\nRAX: ffff8eb542c00040 RBX: ffff8eb541333150 RCX: 000000008010000d\nRDX: 000000008010000e RSI: 000000008010000d RDI: ffff8eb440042c00\nRBP: ffffb297079d7e48 R08: 0000000000000001 R09: ffffffff9fdeac00\nR10: ffff8eb5003be000 R11: 0000000000000001 R12: ffffffffa1545620\nR13: ffffffffa1545628 R14: 0000000000000000 R15: ffffffffa1543b20\nFS: 0000000000000000(0000) GS:ffff8ed37fa00000(0000) knlGS:0000000000000000\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 00005601b5f4c2e8 CR3: 0000001fc8c10002 CR4: 00000000003706e0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\nCall Trace:\n ops_exit_list.isra.9+0x36/0x70\n cleanup_net+0x234/0x390\n process_one_work+0x1cb/0x360\n ? process_one_work+0x360/0x360\n worker_thread+0x30/0x370\n ? process_one_work+0x360/0x360\n kthread+0x116/0x130\n ? kthread_park+0x80/0x80\n ret_from_fork+0x22/0x30\n\nTo avoid the above warning and later on the kernel panic that could happen\non shutdown due to a NULL pointer dereference, make sure to set the\nnetns_refund flag that was introduced by commit 3a5ca857079e (\"can: dev:\nMove device back to init netns on owning netns delete\") to properly\nrestore the IPoIB interfaces to the initial netns."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/infiniband/ulp/ipoib/ipoib_netlink.c"], "versions": [{"version": "dc1d4c658b9c123e31054fffcbc0b23566694b1a", "lessThan": "64f1fb6acc2ab95982fc4334f351d7576c26f313", "status": "affected", "versionType": "git"}, {"version": "5ce2dced8e95e76ff7439863a118a053a7fc6f91", "lessThan": "67cf4e447b5e5e9e94996cb6812ae2828e0e0e27", "status": "affected", "versionType": "git"}, {"version": "5ce2dced8e95e76ff7439863a118a053a7fc6f91", "lessThan": "0a672f7d89db2da17ae02733ccc08458be72a6f8", "status": "affected", "versionType": "git"}, {"version": "5ce2dced8e95e76ff7439863a118a053a7fc6f91", "lessThan": "a3e74fb9247cd530dca246699d5eb5a691884d32", "status": "affected", "versionType": "git"}, {"version": "938e97b946ecf5aa3ccc04ff4ad116e92d894270", "status": "affected", "versionType": "git"}, {"version": "86e76dbea6379bb272bceb36fe4217f34ff6858d", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/infiniband/ulp/ipoib/ipoib_netlink.c"], "versions": [{"version": "5.10", "status": "affected"}, {"version": "0", "lessThan": "5.10", "status": "unaffected", "versionType": "semver"}, {"version": "5.4.126", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.44", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.12.11", "lessThanOrEqual": "5.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.13", "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": "5.4.73", "versionEndExcluding": "5.4.126"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10", "versionEndExcluding": "5.10.44"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10", "versionEndExcluding": "5.12.11"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10", "versionEndExcluding": "5.13"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.8.17"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.9.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/64f1fb6acc2ab95982fc4334f351d7576c26f313"}, {"url": "https://git.kernel.org/stable/c/67cf4e447b5e5e9e94996cb6812ae2828e0e0e27"}, {"url": "https://git.kernel.org/stable/c/0a672f7d89db2da17ae02733ccc08458be72a6f8"}, {"url": "https://git.kernel.org/stable/c/a3e74fb9247cd530dca246699d5eb5a691884d32"}], "title": "RDMA/ipoib: Fix warning caused by destroying non-initial netns", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2024-06-12T15:25:18.906799Z", "id": "CVE-2021-47266", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-06-12T15:25:33.969Z"}}, {"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T05:32:08.117Z"}, "title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/stable/c/64f1fb6acc2ab95982fc4334f351d7576c26f313", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/67cf4e447b5e5e9e94996cb6812ae2828e0e0e27", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/0a672f7d89db2da17ae02733ccc08458be72a6f8", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/a3e74fb9247cd530dca246699d5eb5a691884d32", "tags": ["x_transferred"]}]}]}}

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PowerEdge R630/02C2CP, BIOS 2.1.5 04/11/2016\nWorkqueue: netns cleanup_net\nRIP: 0010:netdev_exit+0x3f/0x50\nCode: 48 8b bb 30 01 00 00 e8 ef 81 b1 ff 48 81 fb c0 3a 54 a1 74 13 48\n8b 83 90 00 00 00 48 81 c3 90 00 00 00 48 39 d8 75 02 5b c3 <0f> 0b 5b\nc3 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 0f 1f 44 00\nRSP: 0018:ffffb297079d7e08 EFLAGS: 00010206\nRAX: ffff8eb542c00040 RBX: ffff8eb541333150 RCX: 000000008010000d\nRDX: 000000008010000e RSI: 000000008010000d RDI: ffff8eb440042c00\nRBP: ffffb297079d7e48 R08: 0000000000000001 R09: ffffffff9fdeac00\nR10: ffff8eb5003be000 R11: 0000000000000001 R12: ffffffffa1545620\nR13: ffffffffa1545628 R14: 0000000000000000 R15: ffffffffa1543b20\nFS: 0000000000000000(0000) GS:ffff8ed37fa00000(0000) knlGS:0000000000000000\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 00005601b5f4c2e8 CR3: 0000001fc8c10002 CR4: 00000000003706e0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\nCall Trace:\n ops_exit_list.isra.9+0x36/0x70\n cleanup_net+0x234/0x390\n process_one_work+0x1cb/0x360\n ? process_one_work+0x360/0x360\n worker_thread+0x30/0x370\n ? process_one_work+0x360/0x360\n kthread+0x116/0x130\n ? kthread_park+0x80/0x80\n ret_from_fork+0x22/0x30\n\nTo avoid the above warning and later on the kernel panic that could happen\non shutdown due to a NULL pointer dereference, make sure to set the\nnetns_refund flag that was introduced by commit 3a5ca857079e (\"can: dev:\nMove device back to init netns on owning netns delete\") to properly\nrestore the IPoIB interfaces to the initial netns."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.4.126", "versionStartIncluding": "5.4.73"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.10.44", "versionStartIncluding": "5.10"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.12.11", "versionStartIncluding": "5.10"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.13", "versionStartIncluding": "5.10"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionStartIncluding": "5.8.17"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionStartIncluding": "5.9.2"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-05-04T12:41:19.900Z"}}}, "cveMetadata": {"cveId": "CVE-2021-47266", "state": "PUBLISHED", "dateUpdated": "2025-05-04T12:41:19.900Z", "dateReserved": "2024-05-21T13:27:52.126Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2024-05-21T14:19:57.249Z", "assignerShortName": "Linux"}, "dataVersion": "5.1"}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "0132C972-8600-48DD-BDE1-9F0711DFBA17", "versionEndExcluding": "5.4.126", "versionStartIncluding": "5.4.73", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "BEFC3ACE-365D-48E7-9C0A-019C74CC0725", "versionEndExcluding": "5.9", "versionStartIncluding": "5.8.17", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "A5230CBD-D597-494E-9B1B-91957C8AD0F0", "versionEndExcluding": "5.10", "versionStartIncluding": "5.9.2", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "C7E14A6C-41D9-41C0-88FA-8959D208A792", "versionEndExcluding": "5.10.44", "versionStartIncluding": "5.10", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "F914A757-FAFD-407E-9031-21F66635D5EA", "versionEndExcluding": "5.12.11", "versionStartIncluding": "5.11", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.13:rc1:*:*:*:*:*:*", "matchCriteriaId": "0CBAD0FC-C281-4666-AB2F-F8E6E1165DF7", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.13:rc2:*:*:*:*:*:*", "matchCriteriaId": "96AC23B2-D46A-49D9-8203-8E1BEDCA8532", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.13:rc3:*:*:*:*:*:*", "matchCriteriaId": "DA610E30-717C-4700-9F77-A3C9244F3BFD", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.13:rc4:*:*:*:*:*:*", "matchCriteriaId": "1ECD33F5-85BE-430B-8F86-8D7BD560311D", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.13:rc5:*:*:*:*:*:*", "matchCriteriaId": "CF351855-2437-4CF5-AD7C-BDFA51F27683", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/ipoib: Fix warning caused by destroying non-initial netns\n\nAfter the commit 5ce2dced8e95 (\"RDMA/ipoib: Set rtnl_link_ops for ipoib\ninterfaces\"), if the IPoIB device is moved to non-initial netns,\ndestroying that netns lets the device vanish instead of moving it back to\nthe initial netns, This is happening because default_device_exit() skips\nthe interfaces due to having rtnl_link_ops set.\n\nSteps to reporoduce:\n ip netns add foo\n ip link set mlx5_ib0 netns foo\n ip netns delete foo\n\nWARNING: CPU: 1 PID: 704 at net/core/dev.c:11435 netdev_exit+0x3f/0x50\nModules linked in: xt_CHECKSUM xt_MASQUERADE xt_conntrack ipt_REJECT\nnf_reject_ipv4 nft_compat nft_counter nft_chain_nat nf_nat nf_conntrack\nnf_defrag_ipv6 nf_defrag_ipv4 nf_tables nfnetlink tun d\n fuse\nCPU: 1 PID: 704 Comm: kworker/u64:3 Tainted: G S W 5.13.0-rc1+ #1\nHardware name: Dell Inc. PowerEdge R630/02C2CP, BIOS 2.1.5 04/11/2016\nWorkqueue: netns cleanup_net\nRIP: 0010:netdev_exit+0x3f/0x50\nCode: 48 8b bb 30 01 00 00 e8 ef 81 b1 ff 48 81 fb c0 3a 54 a1 74 13 48\n8b 83 90 00 00 00 48 81 c3 90 00 00 00 48 39 d8 75 02 5b c3 <0f> 0b 5b\nc3 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 0f 1f 44 00\nRSP: 0018:ffffb297079d7e08 EFLAGS: 00010206\nRAX: ffff8eb542c00040 RBX: ffff8eb541333150 RCX: 000000008010000d\nRDX: 000000008010000e RSI: 000000008010000d RDI: ffff8eb440042c00\nRBP: ffffb297079d7e48 R08: 0000000000000001 R09: ffffffff9fdeac00\nR10: ffff8eb5003be000 R11: 0000000000000001 R12: ffffffffa1545620\nR13: ffffffffa1545628 R14: 0000000000000000 R15: ffffffffa1543b20\nFS: 0000000000000000(0000) GS:ffff8ed37fa00000(0000) knlGS:0000000000000000\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 00005601b5f4c2e8 CR3: 0000001fc8c10002 CR4: 00000000003706e0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\nCall Trace:\n ops_exit_list.isra.9+0x36/0x70\n cleanup_net+0x234/0x390\n process_one_work+0x1cb/0x360\n ? process_one_work+0x360/0x360\n worker_thread+0x30/0x370\n ? process_one_work+0x360/0x360\n kthread+0x116/0x130\n ? kthread_park+0x80/0x80\n ret_from_fork+0x22/0x30\n\nTo avoid the above warning and later on the kernel panic that could happen\non shutdown due to a NULL pointer dereference, make sure to set the\nnetns_refund flag that was introduced by commit 3a5ca857079e (\"can: dev:\nMove device back to init netns on owning netns delete\") to properly\nrestore the IPoIB interfaces to the initial netns."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: RDMA/ipoib: Correcci\u00f3n de advertencia causada por la destrucci\u00f3n de redes no iniciales. Despu\u00e9s de la confirmaci\u00f3n 5ce2dced8e95 (\"RDMA/ipoib: Establecer rtnl_link_ops para interfaces ipoib\"), si el dispositivo IPoIB se mueve a redes no iniciales, destruir esas redes permite que el dispositivo desaparezca en lugar de moverlo nuevamente a las redes iniciales. Esto sucede porque default_device_exit() omite las interfaces debido a que tiene rtnl_link_ops configurado. Pasos para reproducir: ip netns agregar foo ip link set mlx5_ib0 netns foo ip netns eliminar foo ADVERTENCIA: CPU: 1 PID: 704 en net/core/dev.c:11435 netdev_exit+0x3f/0x50 M\u00f3dulos vinculados en: xt_CHECKSUM xt_MASQUERADE xt_conntrack ipt_REJECT nf_reject_ip v4 nft_compat nft_counter nft_chain_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 nf_tables nfnetlink tun d fuse CPU: 1 PID: 704 Comm: kworker/u64:3 Contaminado: GSW 5.13.0-rc1+ #1 Nombre de hardware: Dell Inc. PowerEdge R6 30/02C2CP, BIOS 2.1.5 11/04/2016 Cola de trabajo: netns cleanup_net RIP: 0010:netdev_exit+0x3f/0x50 C\u00f3digo: 48 8b bb 30 01 00 00 e8 ef 81 b1 ff 48 81 fb c0 3a 54 a1 74 13 48 8b 83 90 00 00 00 48 81 c3 90 00 00 00 48 39 d8 75 02 5b c3 &lt;0f&gt; 0b 5b c3 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 0f 1f 44 00 RSP: 0018:ffffb297079d7e08 : 00010206 RAX: ffff8eb542c00040 RBX: ffff8eb541333150 RCX : 000000008010000d RDX: 000000008010000e RSI: 000000008010000d RDI: ffff8eb440042c00 RBP: ffffb297079d7e48 R08: 0000000000000001 R09: ff9fdeac00 R10: ffff8eb5003be000 R11: 0000000000000001 R12: ffffffffa1545620 R13: ffffffffa1545628 R14: 00000000000000000 R15: ffffffffa1543b20 FS: 0000000000(0000) GS:ffff8ed37fa00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005601b5f4c2e8 CR3: 0000001fc8c10002 CR4: 00000000003706e0 0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Seguimiento de llamadas: ops_exit _list.isra.9 +0x36/0x70 cleanup_net+0x234/0x390 Process_one_work+0x1cb/0x360 ? Process_one_work+0x360/0x360 worker_thread+0x30/0x370 ? Process_one_work+0x360/0x360 kthread+0x116/0x130 ? kthread_park+0x80/0x80 ret_from_fork+0x22/0x30 Para evitar la advertencia anterior y m\u00e1s adelante el p\u00e1nico del kernel que podr\u00eda ocurrir al cerrar debido a una desreferencia del puntero NULL, aseg\u00farese de configurar el indicador netns_refund que fue introducido por la confirmaci\u00f3n 3a5ca857079e (\"can: dev: Mueva el dispositivo nuevamente a init netns al poseer netns eliminar\") para restaurar correctamente las interfaces IPoIB a las netns iniciales."}], "id": "CVE-2021-47266", "lastModified": "2024-12-26T20:41:25.273", "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": "2024-05-21T15:15:15.213", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/0a672f7d89db2da17ae02733ccc08458be72a6f8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/64f1fb6acc2ab95982fc4334f351d7576c26f313"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/67cf4e447b5e5e9e94996cb6812ae2828e0e0e27"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a3e74fb9247cd530dca246699d5eb5a691884d32"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/0a672f7d89db2da17ae02733ccc08458be72a6f8"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/64f1fb6acc2ab95982fc4334f351d7576c26f313"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/67cf4e447b5e5e9e94996cb6812ae2828e0e0e27"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a3e74fb9247cd530dca246699d5eb5a691884d32"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-476"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: RDMA/ipoib: Fix warning caused by destroying non-initial netns", "id": "2282539", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2282539"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.4", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:H/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:\nRDMA/ipoib: Fix warning caused by destroying non-initial netns\nAfter the commit 5ce2dced8e95 (\"RDMA/ipoib: Set rtnl_link_ops for ipoib\ninterfaces\"), if the IPoIB device is moved to non-initial netns,\ndestroying that netns lets the device vanish instead of moving it back to\nthe initial netns, This is happening because default_device_exit() skips\nthe interfaces due to having rtnl_link_ops set.\nSteps to reporoduce:\nip netns add foo\nip link set mlx5_ib0 netns foo\nip netns delete foo\nWARNING: CPU: 1 PID: 704 at net/core/dev.c:11435 netdev_exit+0x3f/0x50\nModules linked in: xt_CHECKSUM xt_MASQUERADE xt_conntrack ipt_REJECT\nnf_reject_ipv4 nft_compat nft_counter nft_chain_nat nf_nat nf_conntrack\nnf_defrag_ipv6 nf_defrag_ipv4 nf_tables nfnetlink tun d\nfuse\nCPU: 1 PID: 704 Comm: kworker/u64:3 Tainted: G S W 5.13.0-rc1+ #1\nHardware name: Dell Inc. PowerEdge R630/02C2CP, BIOS 2.1.5 04/11/2016\nWorkqueue: netns cleanup_net\nRIP: 0010:netdev_exit+0x3f/0x50\nCode: 48 8b bb 30 01 00 00 e8 ef 81 b1 ff 48 81 fb c0 3a 54 a1 74 13 48\n8b 83 90 00 00 00 48 81 c3 90 00 00 00 48 39 d8 75 02 5b c3 <0f> 0b 5b\nc3 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 0f 1f 44 00\nRSP: 0018:ffffb297079d7e08 EFLAGS: 00010206\nRAX: ffff8eb542c00040 RBX: ffff8eb541333150 RCX: 000000008010000d\nRDX: 000000008010000e RSI: 000000008010000d RDI: ffff8eb440042c00\nRBP: ffffb297079d7e48 R08: 0000000000000001 R09: ffffffff9fdeac00\nR10: ffff8eb5003be000 R11: 0000000000000001 R12: ffffffffa1545620\nR13: ffffffffa1545628 R14: 0000000000000000 R15: ffffffffa1543b20\nFS: 0000000000000000(0000) GS:ffff8ed37fa00000(0000) knlGS:0000000000000000\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 00005601b5f4c2e8 CR3: 0000001fc8c10002 CR4: 00000000003706e0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\nCall Trace:\nops_exit_list.isra.9+0x36/0x70\ncleanup_net+0x234/0x390\nprocess_one_work+0x1cb/0x360\n? process_one_work+0x360/0x360\nworker_thread+0x30/0x370\n? process_one_work+0x360/0x360\nkthread+0x116/0x130\n? kthread_park+0x80/0x80\nret_from_fork+0x22/0x30\nTo avoid the above warning and later on the kernel panic that could happen\non shutdown due to a NULL pointer dereference, make sure to set the\nnetns_refund flag that was introduced by commit 3a5ca857079e (\"can: dev:\nMove device back to init netns on owning netns delete\") to properly\nrestore the IPoIB interfaces to the initial netns."], "name": "CVE-2021-47266", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "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": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-05-21T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-47266\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-47266\nhttps://lore.kernel.org/linux-cve-announce/2024052149-CVE-2021-47266-a1b5@gregkh/T"], "threat_severity": "Low"}

{}