{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-98443","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-09-25T10:25:14.349Z","datePublished":"2026-10-18T15:14:53.597Z","dateUpdated":"2026-10-21T12:55:04.681Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-10-21T12:55:04.681Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nxfs: fix cursor and pointer handling when recovering iunlink buckets\n\nLOLLM pointed out a bug in xlog_recover_iunlink_bucket:\n\n1. We don't null out prev_ip after releasing it, which can lead to UAF\n   problems if the inodegc flush call in the loop fails.\n\nat which point I noticed even more bugs:\n\n2. If the inodegc flush inside the loop fails, we also leak @ip.\n\n3. We set prev_agino to agino having already advanced agino, which\n   results in inodes with i_prev_unlinked set to itself.\n\n4. If we exit the bottom of the loop with prev_ip set, then prev_ip\n   aliases ip and we also set its i_prev_unlinked to itself.\n\nBugs 3 and 4 introduce loops into the unlinked list, though these loops\ndon't surface because we immediately flush each unlinked inode after\nloading it.\n\nFix all of these issues."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/xfs/xfs_log_recover.c"],"versions":[{"version":"04755d2e5821b3afbaadd09fe5df58d04de36484","lessThan":"47a948ba653a463d429e02fda2f06a3d6b78666d","status":"affected","versionType":"git"},{"version":"04755d2e5821b3afbaadd09fe5df58d04de36484","lessThan":"8c9d5b8a96d6b93eb24e07b4163c89341ba29bd1","status":"affected","versionType":"git"},{"version":"04755d2e5821b3afbaadd09fe5df58d04de36484","lessThan":"66a2179d02668f8df44b1a249899006f3ba38ea0","status":"affected","versionType":"git"},{"version":"04755d2e5821b3afbaadd09fe5df58d04de36484","lessThan":"961c717e6bf0e53c2c2b1fe4aef1add9390fedab","status":"affected","versionType":"git"},{"version":"04755d2e5821b3afbaadd09fe5df58d04de36484","lessThan":"65f39d09d73718611cee40399179323b5d4ead00","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/xfs/xfs_log_recover.c"],"versions":[{"version":"6.0","status":"affected"},{"version":"0","lessThan":"6.0","status":"unaffected","versionType":"semver"},{"version":"6.6.160","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.113","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.55","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.2.9","lessThanOrEqual":"7.2.*","status":"unaffected","versionType":"semver"},{"version":"7.3","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":"6.0","versionEndExcluding":"6.6.160"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.0","versionEndExcluding":"6.12.113"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.0","versionEndExcluding":"6.18.55"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.0","versionEndExcluding":"7.2.9"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.0","versionEndExcluding":"7.3"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/47a948ba653a463d429e02fda2f06a3d6b78666d"},{"url":"https://git.kernel.org/stable/c/8c9d5b8a96d6b93eb24e07b4163c89341ba29bd1"},{"url":"https://git.kernel.org/stable/c/66a2179d02668f8df44b1a249899006f3ba38ea0"},{"url":"https://git.kernel.org/stable/c/961c717e6bf0e53c2c2b1fe4aef1add9390fedab"},{"url":"https://git.kernel.org/stable/c/65f39d09d73718611cee40399179323b5d4ead00"}],"title":"xfs: fix cursor and pointer handling when recovering iunlink buckets","x_generator":{"engine":"bippy-1.2.0"}}}}