{"id":"CVE-2026-43063","state":"PUBLISHED","title":"xfs: don't irele after failing to iget in xfs_attri_recover_work","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nxfs: don't irele after failing to iget in xfs_attri_recover_work\n\nxlog_recovery_iget* never set @ip to a valid pointer if they return\nan error, so this irele will walk off a dangling pointer.  Fix that.","publishedAt":"2026-05-05T15:23:24.034Z","updatedAt":"2026-10-19T19:06:12.211Z","severity":{"score":7.8,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","source":"Linux"},"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"ae673f534a30976ce5e709c4535a59c12b786ef3","status":"affected","lessThan":"b5c5a50c2f513d4a13a6763564a07b470e69cc5a","versionType":"git"},{"version":"ae673f534a30976ce5e709c4535a59c12b786ef3","status":"affected","lessThan":"a1a5df1038f0b3c560d204270373621a4e622808","versionType":"git"},{"version":"ae673f534a30976ce5e709c4535a59c12b786ef3","status":"affected","lessThan":"40082d08b638485cbaa543dc8087a3d1844d6f08","versionType":"git"},{"version":"ae673f534a30976ce5e709c4535a59c12b786ef3","status":"affected","lessThan":"70685c291ef82269180758130394ecdc4496b52c","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/xfs/xfs_attr_item.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.10","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.10","versionType":"semver"},{"version":"6.12.80","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.21","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19.11","status":"unaffected","lessThanOrEqual":"6.19.*","versionType":"semver"},{"version":"7.0","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/xfs/xfs_attr_item.c"]}],"references":["https://git.kernel.org/stable/c/b5c5a50c2f513d4a13a6763564a07b470e69cc5a","https://git.kernel.org/stable/c/a1a5df1038f0b3c560d204270373621a4e622808","https://git.kernel.org/stable/c/40082d08b638485cbaa543dc8087a3d1844d6f08","https://git.kernel.org/stable/c/70685c291ef82269180758130394ecdc4496b52c"],"weaknesses":["CWE-416"],"ingestedAt":"2026-10-29T20:11:57.932Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/43xxx/CVE-2026-43063.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-43063","state":"PUBLISHED","datePublished":"2026-05-05T15:23:24.034Z","dateUpdated":"2026-10-19T19:06:12.211Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-05-01T14:12:55.981Z"},"containers":{"cna":{"title":"xfs: don't irele after failing to iget in xfs_attri_recover_work","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nxfs: don't irele after failing to iget in xfs_attri_recover_work\n\nxlog_recovery_iget* never set @ip to a valid pointer if they return\nan error, so this irele will walk off a dangling pointer.  Fix that."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"ae673f534a30976ce5e709c4535a59c12b786ef3","status":"affected","lessThan":"b5c5a50c2f513d4a13a6763564a07b470e69cc5a","versionType":"git"},{"version":"ae673f534a30976ce5e709c4535a59c12b786ef3","status":"affected","lessThan":"a1a5df1038f0b3c560d204270373621a4e622808","versionType":"git"},{"version":"ae673f534a30976ce5e709c4535a59c12b786ef3","status":"affected","lessThan":"40082d08b638485cbaa543dc8087a3d1844d6f08","versionType":"git"},{"version":"ae673f534a30976ce5e709c4535a59c12b786ef3","status":"affected","lessThan":"70685c291ef82269180758130394ecdc4496b52c","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/xfs/xfs_attr_item.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.10","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.10","versionType":"semver"},{"version":"6.12.80","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.21","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19.11","status":"unaffected","lessThanOrEqual":"6.19.*","versionType":"semver"},{"version":"7.0","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/xfs/xfs_attr_item.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/b5c5a50c2f513d4a13a6763564a07b470e69cc5a"},{"url":"https://git.kernel.org/stable/c/a1a5df1038f0b3c560d204270373621a4e622808"},{"url":"https://git.kernel.org/stable/c/40082d08b638485cbaa543dc8087a3d1844d6f08"},{"url":"https://git.kernel.org/stable/c/70685c291ef82269180758130394ecdc4496b52c"}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","baseScore":7.8,"baseSeverity":"HIGH"},"scenarios":[{"lang":"en","value":"AV:L - Vulnerable code is reached during local XFS filesystem mount/log recovery from a block device or filesystem image, not through network input. A crafted XFS image or dirty log is the plausible attack vehicle.\nAC:L - No race or hard-to-control timing is required; a crafted recoverable XFS log item that makes inode lookup fail deterministically reaches the bad `xfs_irele` path. The needed log state is attacker-controlled in the malicious filesystem image.\nPR:N - The direct mount path requires `CAP_SYS_ADMIN` because XFS is not `FS_USERNS_MOUNT`, but an attacker can supply a malicious filesystem image for a privileged user or automounter to mount. In that highest reasonable scenario, the attacker needs no privileges on the target.\nUI:R - Exploitation requires the crafted XFS filesystem to be mounted or recovered by a user, administrator, or mounting service. No further user action is needed once recovery starts.\nS:U - The vulnerability corrupts kernel state within the same operating-system security authority. It is not a VM escape or other cross-scope boundary violation.\nC:H - The bug releases an uninitialized or dangling inode pointer during recovery, which is kernel memory corruption/use-after-free class behavior. Following the higher-severity rule, this is treated as potentially enabling kernel memory disclosure.\nI:H - The invalid inode release can corrupt kernel object lifetime/refcounts and may be exploitable beyond a simple crash. Following the higher-severity rule for dangling pointer memory corruption, integrity impact is High.\nA:H - At minimum, calling `xfs_irele` on an invalid or dangling pointer can crash or BUG the kernel during mount recovery. This gives high availability impact."}]}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-08-05T12:25:41.403Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.10","versionEndExcluding":"6.12.80"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.10","versionEndExcluding":"6.18.21"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.10","versionEndExcluding":"6.19.11"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.10","versionEndExcluding":"7.0"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2026-43063","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"version":"2.0.3","timestamp":"2026-10-16T15:14:14.697660Z"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-416","lang":"en","type":"CWE","description":"CWE-416 Use After Free"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-19T19:06:12.211Z"}}]}}}