{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2022-48923", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-08-21T06:06:23.296Z", "datePublished": "2024-08-22T01:32:58.084Z", "dateUpdated": "2025-05-21T08:44:01.641Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-05-21T08:44:01.641Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: prevent copying too big compressed lzo segment\n\nCompressed length can be corrupted to be a lot larger than memory\nwe have allocated for buffer.\nThis will cause memcpy in copy_compressed_segment to write outside\nof allocated memory.\n\nThis mostly results in stuck read syscall but sometimes when using\nbtrfs send can get #GP\n\n kernel: general protection fault, probably for non-canonical address 0x841551d5c1000: 0000 [#1] PREEMPT SMP NOPTI\n kernel: CPU: 17 PID: 264 Comm: kworker/u256:7 Tainted: P OE 5.17.0-rc2-1 #12\n kernel: Workqueue: btrfs-endio btrfs_work_helper [btrfs]\n kernel: RIP: 0010:lzo_decompress_bio (./include/linux/fortify-string.h:225 fs/btrfs/lzo.c:322 fs/btrfs/lzo.c:394) btrfs\n Code starting with the faulting instruction\n ===========================================\n 0:* 48 8b 06 mov (%rsi),%rax <-- trapping instruction\n 3: 48 8d 79 08 lea 0x8(%rcx),%rdi\n 7: 48 83 e7 f8 and $0xfffffffffffffff8,%rdi\n b: 48 89 01 mov %rax,(%rcx)\n e: 44 89 f0 mov %r14d,%eax\n 11: 48 8b 54 06 f8 mov -0x8(%rsi,%rax,1),%rdx\n kernel: RSP: 0018:ffffb110812efd50 EFLAGS: 00010212\n kernel: RAX: 0000000000001000 RBX: 000000009ca264c8 RCX: ffff98996e6d8ff8\n kernel: RDX: 0000000000000064 RSI: 000841551d5c1000 RDI: ffffffff9500435d\n kernel: RBP: ffff989a3be856c0 R08: 0000000000000000 R09: 0000000000000000\n kernel: R10: 0000000000000000 R11: 0000000000001000 R12: ffff98996e6d8000\n kernel: R13: 0000000000000008 R14: 0000000000001000 R15: 000841551d5c1000\n kernel: FS: 0000000000000000(0000) GS:ffff98a09d640000(0000) knlGS:0000000000000000\n kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n kernel: CR2: 00001e9f984d9ea8 CR3: 000000014971a000 CR4: 00000000003506e0\n kernel: Call Trace:\n kernel: <TASK>\n kernel: end_compressed_bio_read (fs/btrfs/compression.c:104 fs/btrfs/compression.c:1363 fs/btrfs/compression.c:323) btrfs\n kernel: end_workqueue_fn (fs/btrfs/disk-io.c:1923) btrfs\n kernel: btrfs_work_helper (fs/btrfs/async-thread.c:326) btrfs\n kernel: process_one_work (./arch/x86/include/asm/jump_label.h:27 ./include/linux/jump_label.h:212 ./include/trace/events/workqueue.h:108 kernel/workqueue.c:2312)\n kernel: worker_thread (./include/linux/list.h:292 kernel/workqueue.c:2455)\n kernel: ? process_one_work (kernel/workqueue.c:2397)\n kernel: kthread (kernel/kthread.c:377)\n kernel: ? kthread_complete_and_exit (kernel/kthread.c:332)\n kernel: ret_from_fork (arch/x86/entry/entry_64.S:301)\n kernel: </TASK>"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/btrfs/lzo.c"], "versions": [{"version": "a6e66e6f8c1b685e11b778bef614480a9c1a5278", "lessThan": "8df508b7a44cd8110c726057cd28e8f8116885eb", "status": "affected", "versionType": "git"}, {"version": "a6e66e6f8c1b685e11b778bef614480a9c1a5278", "lessThan": "e326bd06cdde46df952361456232022298281d16", "status": "affected", "versionType": "git"}, {"version": "a6e66e6f8c1b685e11b778bef614480a9c1a5278", "lessThan": "741b23a970a79d5d3a1db2d64fa2c7b375a4febb", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/btrfs/lzo.c"], "versions": [{"version": "5.15", "status": "affected"}, {"version": "0", "lessThan": "5.15", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.26", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.16.12", "lessThanOrEqual": "5.16.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.17", "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": "5.15", "versionEndExcluding": "5.15.26"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "5.16.12"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "5.17"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/8df508b7a44cd8110c726057cd28e8f8116885eb"}, {"url": "https://git.kernel.org/stable/c/e326bd06cdde46df952361456232022298281d16"}, {"url": "https://git.kernel.org/stable/c/741b23a970a79d5d3a1db2d64fa2c7b375a4febb"}], "title": "btrfs: prevent copying too big compressed lzo segment", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2022-48923", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-09-10T15:33:22.056264Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-09-12T17:33:00.797Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2022-48923", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-09-10T15:33:22.056264Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-09-11T12:42:12.730Z"}}], "cna": {"title": "btrfs: prevent copying too big compressed lzo segment", "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "a6e66e6f8c1b685e11b778bef614480a9c1a5278", "lessThan": "8df508b7a44cd8110c726057cd28e8f8116885eb", "versionType": "git"}, {"status": "affected", "version": "a6e66e6f8c1b685e11b778bef614480a9c1a5278", "lessThan": "e326bd06cdde46df952361456232022298281d16", "versionType": "git"}, {"status": "affected", "version": "a6e66e6f8c1b685e11b778bef614480a9c1a5278", "lessThan": "741b23a970a79d5d3a1db2d64fa2c7b375a4febb", "versionType": "git"}], "programFiles": ["fs/btrfs/lzo.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "5.15"}, {"status": "unaffected", "version": "0", "lessThan": "5.15", "versionType": "semver"}, {"status": "unaffected", "version": "5.15.26", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "5.16.12", "versionType": "semver", "lessThanOrEqual": "5.16.*"}, {"status": "unaffected", "version": "5.17", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["fs/btrfs/lzo.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/8df508b7a44cd8110c726057cd28e8f8116885eb"}, {"url": "https://git.kernel.org/stable/c/e326bd06cdde46df952361456232022298281d16"}, {"url": "https://git.kernel.org/stable/c/741b23a970a79d5d3a1db2d64fa2c7b375a4febb"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: prevent copying too big compressed lzo segment\n\nCompressed length can be corrupted to be a lot larger than memory\nwe have allocated for buffer.\nThis will cause memcpy in copy_compressed_segment to write outside\nof allocated memory.\n\nThis mostly results in stuck read syscall but sometimes when using\nbtrfs send can get #GP\n\n kernel: general protection fault, probably for non-canonical address 0x841551d5c1000: 0000 [#1] PREEMPT SMP NOPTI\n kernel: CPU: 17 PID: 264 Comm: kworker/u256:7 Tainted: P OE 5.17.0-rc2-1 #12\n kernel: Workqueue: btrfs-endio btrfs_work_helper [btrfs]\n kernel: RIP: 0010:lzo_decompress_bio (./include/linux/fortify-string.h:225 fs/btrfs/lzo.c:322 fs/btrfs/lzo.c:394) btrfs\n Code starting with the faulting instruction\n ===========================================\n 0:* 48 8b 06 mov (%rsi),%rax <-- trapping instruction\n 3: 48 8d 79 08 lea 0x8(%rcx),%rdi\n 7: 48 83 e7 f8 and $0xfffffffffffffff8,%rdi\n b: 48 89 01 mov %rax,(%rcx)\n e: 44 89 f0 mov %r14d,%eax\n 11: 48 8b 54 06 f8 mov -0x8(%rsi,%rax,1),%rdx\n kernel: RSP: 0018:ffffb110812efd50 EFLAGS: 00010212\n kernel: RAX: 0000000000001000 RBX: 000000009ca264c8 RCX: ffff98996e6d8ff8\n kernel: RDX: 0000000000000064 RSI: 000841551d5c1000 RDI: ffffffff9500435d\n kernel: RBP: ffff989a3be856c0 R08: 0000000000000000 R09: 0000000000000000\n kernel: R10: 0000000000000000 R11: 0000000000001000 R12: ffff98996e6d8000\n kernel: R13: 0000000000000008 R14: 0000000000001000 R15: 000841551d5c1000\n kernel: FS: 0000000000000000(0000) GS:ffff98a09d640000(0000) knlGS:0000000000000000\n kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n kernel: CR2: 00001e9f984d9ea8 CR3: 000000014971a000 CR4: 00000000003506e0\n kernel: Call Trace:\n kernel: <TASK>\n kernel: end_compressed_bio_read (fs/btrfs/compression.c:104 fs/btrfs/compression.c:1363 fs/btrfs/compression.c:323) btrfs\n kernel: end_workqueue_fn (fs/btrfs/disk-io.c:1923) btrfs\n kernel: btrfs_work_helper (fs/btrfs/async-thread.c:326) btrfs\n kernel: process_one_work (./arch/x86/include/asm/jump_label.h:27 ./include/linux/jump_label.h:212 ./include/trace/events/workqueue.h:108 kernel/workqueue.c:2312)\n kernel: worker_thread (./include/linux/list.h:292 kernel/workqueue.c:2455)\n kernel: ? process_one_work (kernel/workqueue.c:2397)\n kernel: kthread (kernel/kthread.c:377)\n kernel: ? kthread_complete_and_exit (kernel/kthread.c:332)\n kernel: ret_from_fork (arch/x86/entry/entry_64.S:301)\n kernel: </TASK>"}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.26", "versionStartIncluding": "5.15"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.16.12", "versionStartIncluding": "5.15"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.17", "versionStartIncluding": "5.15"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-05-21T08:44:01.641Z"}}}, "cveMetadata": {"cveId": "CVE-2022-48923", "state": "PUBLISHED", "dateUpdated": "2025-05-21T08:44:01.641Z", "dateReserved": "2024-08-21T06:06:23.296Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2024-08-22T01:32:58.084Z", "assignerShortName": "Linux"}, "dataVersion": "5.1"}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "0988E2F0-011E-46E9-BFAE-17673706CBBF", "versionEndExcluding": "5.15.26", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "C76BAB21-7F23-4AD8-A25F-CA7B262A2698", "versionEndExcluding": "5.16.12", "versionStartIncluding": "5.16", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.17:rc1:*:*:*:*:*:*", "matchCriteriaId": "7BD5F8D9-54FA-4CB0-B4F0-CB0471FDDB2D", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.17:rc2:*:*:*:*:*:*", "matchCriteriaId": "E6E34B23-78B4-4516-9BD8-61B33F4AC49A", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.17:rc3:*:*:*:*:*:*", "matchCriteriaId": "C030FA3D-03F4-4FB9-9DBF-D08E5CAC51AA", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.17:rc4:*:*:*:*:*:*", "matchCriteriaId": "B2D2677C-5389-4AE9-869D-0F881E80D923", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.17:rc5:*:*:*:*:*:*", "matchCriteriaId": "EFA3917C-C322-4D92-912D-ECE45B2E7416", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: prevent copying too big compressed lzo segment\n\nCompressed length can be corrupted to be a lot larger than memory\nwe have allocated for buffer.\nThis will cause memcpy in copy_compressed_segment to write outside\nof allocated memory.\n\nThis mostly results in stuck read syscall but sometimes when using\nbtrfs send can get #GP\n\n kernel: general protection fault, probably for non-canonical address 0x841551d5c1000: 0000 [#1] PREEMPT SMP NOPTI\n kernel: CPU: 17 PID: 264 Comm: kworker/u256:7 Tainted: P OE 5.17.0-rc2-1 #12\n kernel: Workqueue: btrfs-endio btrfs_work_helper [btrfs]\n kernel: RIP: 0010:lzo_decompress_bio (./include/linux/fortify-string.h:225 fs/btrfs/lzo.c:322 fs/btrfs/lzo.c:394) btrfs\n Code starting with the faulting instruction\n ===========================================\n 0:* 48 8b 06 mov (%rsi),%rax <-- trapping instruction\n 3: 48 8d 79 08 lea 0x8(%rcx),%rdi\n 7: 48 83 e7 f8 and $0xfffffffffffffff8,%rdi\n b: 48 89 01 mov %rax,(%rcx)\n e: 44 89 f0 mov %r14d,%eax\n 11: 48 8b 54 06 f8 mov -0x8(%rsi,%rax,1),%rdx\n kernel: RSP: 0018:ffffb110812efd50 EFLAGS: 00010212\n kernel: RAX: 0000000000001000 RBX: 000000009ca264c8 RCX: ffff98996e6d8ff8\n kernel: RDX: 0000000000000064 RSI: 000841551d5c1000 RDI: ffffffff9500435d\n kernel: RBP: ffff989a3be856c0 R08: 0000000000000000 R09: 0000000000000000\n kernel: R10: 0000000000000000 R11: 0000000000001000 R12: ffff98996e6d8000\n kernel: R13: 0000000000000008 R14: 0000000000001000 R15: 000841551d5c1000\n kernel: FS: 0000000000000000(0000) GS:ffff98a09d640000(0000) knlGS:0000000000000000\n kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n kernel: CR2: 00001e9f984d9ea8 CR3: 000000014971a000 CR4: 00000000003506e0\n kernel: Call Trace:\n kernel: <TASK>\n kernel: end_compressed_bio_read (fs/btrfs/compression.c:104 fs/btrfs/compression.c:1363 fs/btrfs/compression.c:323) btrfs\n kernel: end_workqueue_fn (fs/btrfs/disk-io.c:1923) btrfs\n kernel: btrfs_work_helper (fs/btrfs/async-thread.c:326) btrfs\n kernel: process_one_work (./arch/x86/include/asm/jump_label.h:27 ./include/linux/jump_label.h:212 ./include/trace/events/workqueue.h:108 kernel/workqueue.c:2312)\n kernel: worker_thread (./include/linux/list.h:292 kernel/workqueue.c:2455)\n kernel: ? process_one_work (kernel/workqueue.c:2397)\n kernel: kthread (kernel/kthread.c:377)\n kernel: ? kthread_complete_and_exit (kernel/kthread.c:332)\n kernel: ret_from_fork (arch/x86/entry/entry_64.S:301)\n kernel: </TASK>"}, {"lang": "es", "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: btrfs: evita copiar un segmento lzo comprimido demasiado grande. La longitud comprimida puede corromperse y ser mucho mayor que la memoria que hemos asignado para el b\u00fafer. Esto har\u00e1 que memcpy en copy_compressed_segment escriba fuera de la memoria asignada. Esto principalmente da como resultado una llamada al sistema de lectura bloqueada, pero a veces, cuando se usa el env\u00edo btrfs, se puede obtener el kernel #GP: falla de protecci\u00f3n general, probablemente para la direcci\u00f3n no can\u00f3nica 0x841551d5c1000: 0000 [#1] Kernel PREEMPT SMP NOPTI: CPU: 17 PID: 264 Comm: kworker /u256:7 Contaminado: P OE 5.17.0-rc2-1 #12 kernel: Workqueue: btrfs-endio btrfs_work_helper [btrfs] kernel: RIP: 0010:lzo_decompress_bio (./include/linux/fortify-string.h:225 fs /btrfs/lzo.c:322 fs/btrfs/lzo.c:394) C\u00f3digo btrfs que comienza con la instrucci\u00f3n err\u00f3nea ========================== ================== 0:* 48 8b 06 mov (%rsi),%rax &lt;-- instrucci\u00f3n de captura 3: 48 8d 79 08 lea 0x8(%rcx), %rdi 7: 48 83 e7 f8 y $0xffffffffffffffff8,%rdi b: 48 89 01 mov %rax,(%rcx) e: 44 89 f0 mov %r14d,%eax 11: 48 8b 54 06 f8 mov -0x8(% rsi,%rax,1),%rdx kernel: RSP: 0018:ffffb110812efd50 EFLAGS: 00010212 kernel: RAX: 0000000000001000 RBX: 000000009ca264c8 RCX: ffff98996e6d8ff8 kernel: RDX: 0000000064 RSI: 000841551d5c1000 RDI: ffffffff9500435d kernel: RBP: ffff989a3be856c0 R08: 0000000000000000 R09: 0000000000000000 kernel: R10: 0000000000000000 R11: 0000000000001000 R12: ffff98996e6d8000 kernel: R13: 0000000000000008 R14: 00000000000 01000 R15: 000841551d5c1000 kernel: FS: 0000000000000000(0000) GS:ffff98a09d640000(0000) knlGS:00000000000000000 kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 kernel: CR2: 00001e9f984d9ea8 CR3: 000000014971a000 CR4: 00000000003506e0 kernel: Seguimiento de llamadas: kernel: kernel: end_compressed_bio_read (fs/btrfs/compression.c: 104 fs/btrfs/compression.c:1363 fs /btrfs/compression.c:323) kernel btrfs: end_workqueue_fn (fs/btrfs/disk-io.c:1923) kernel btrfs: btrfs_work_helper (fs/btrfs/async-thread.c:326) kernel btrfs: Process_one_work (./ arch/x86/include/asm/jump_label.h:27 ./include/linux/jump_label.h:212 ./include/trace/events/workqueue.h:108 kernel/workqueue.c:2312) kernel: trabajador_thread (. /include/linux/list.h:292 kernel/workqueue.c:2455) kernel:? Process_one_work (kernel/workqueue.c:2397) kernel: kthread (kernel/kthread.c:377) kernel:? kthread_complete_and_exit (kernel/kthread.c:332) kernel: ret_from_fork (arch/x86/entry/entry_64.S:301) kernel: "}], "id": "CVE-2022-48923", "lastModified": "2024-09-12T12:50:02.173", "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": "2024-08-22T02:15:08.377", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/741b23a970a79d5d3a1db2d64fa2c7b375a4febb"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/8df508b7a44cd8110c726057cd28e8f8116885eb"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e326bd06cdde46df952361456232022298281d16"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-787"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: btrfs: prevent copying too big compressed lzo segment", "id": "2307176", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2307176"}, "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-787", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nbtrfs: prevent copying too big compressed lzo segment\nCompressed length can be corrupted to be a lot larger than memory\nwe have allocated for buffer.\nThis will cause memcpy in copy_compressed_segment to write outside\nof allocated memory.\nThis mostly results in stuck read syscall but sometimes when using\nbtrfs send can get #GP\nkernel: general protection fault, probably for non-canonical address 0x841551d5c1000: 0000 [#1] PREEMPT SMP NOPTI\nkernel: CPU: 17 PID: 264 Comm: kworker/u256:7 Tainted: P OE 5.17.0-rc2-1 #12\nkernel: Workqueue: btrfs-endio btrfs_work_helper [btrfs]\nkernel: RIP: 0010:lzo_decompress_bio (./include/linux/fortify-string.h:225 fs/btrfs/lzo.c:322 fs/btrfs/lzo.c:394) btrfs\nCode starting with the faulting instruction\n===========================================\n0:* 48 8b 06 mov (%rsi),%rax <-- trapping instruction\n3: 48 8d 79 08 lea 0x8(%rcx),%rdi\n7: 48 83 e7 f8 and $0xfffffffffffffff8,%rdi\nb: 48 89 01 mov %rax,(%rcx)\ne: 44 89 f0 mov %r14d,%eax\n11: 48 8b 54 06 f8 mov -0x8(%rsi,%rax,1),%rdx\nkernel: RSP: 0018:ffffb110812efd50 EFLAGS: 00010212\nkernel: RAX: 0000000000001000 RBX: 000000009ca264c8 RCX: ffff98996e6d8ff8\nkernel: RDX: 0000000000000064 RSI: 000841551d5c1000 RDI: ffffffff9500435d\nkernel: RBP: ffff989a3be856c0 R08: 0000000000000000 R09: 0000000000000000\nkernel: R10: 0000000000000000 R11: 0000000000001000 R12: ffff98996e6d8000\nkernel: R13: 0000000000000008 R14: 0000000000001000 R15: 000841551d5c1000\nkernel: FS: 0000000000000000(0000) GS:ffff98a09d640000(0000) knlGS:0000000000000000\nkernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nkernel: CR2: 00001e9f984d9ea8 CR3: 000000014971a000 CR4: 00000000003506e0\nkernel: Call Trace:\nkernel: <TASK>\nkernel: end_compressed_bio_read (fs/btrfs/compression.c:104 fs/btrfs/compression.c:1363 fs/btrfs/compression.c:323) btrfs\nkernel: end_workqueue_fn (fs/btrfs/disk-io.c:1923) btrfs\nkernel: btrfs_work_helper (fs/btrfs/async-thread.c:326) btrfs\nkernel: process_one_work (./arch/x86/include/asm/jump_label.h:27 ./include/linux/jump_label.h:212 ./include/trace/events/workqueue.h:108 kernel/workqueue.c:2312)\nkernel: worker_thread (./include/linux/list.h:292 kernel/workqueue.c:2455)\nkernel: ? process_one_work (kernel/workqueue.c:2397)\nkernel: kthread (kernel/kthread.c:377)\nkernel: ? kthread_complete_and_exit (kernel/kthread.c:332)\nkernel: ret_from_fork (arch/x86/entry/entry_64.S:301)\nkernel: </TASK>", "A flaw was found in the btrfs module in the Linux kernel. A too-big compressed lzo segment can cause an out-of-bounds write when copied due to a missing check of its size, potentially causing a general protection fault and a denial of service."], "name": "CVE-2022-48923", "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": "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": "2024-08-22T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2022-48923\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-48923\nhttps://lore.kernel.org/linux-cve-announce/2024082219-CVE-2022-48923-9db1@gregkh/T"], "statement": "The btrfs module is not built in the kernel shipped in Red Hat Enterprise Linux 8 and 9, so it is not affected by this vulnerability.", "threat_severity": "Moderate"}

{}