{"id":"CVE-2026-98443","aliases":[],"cve":{"records":[{"id":"CVE-2026-98443","source":"Linux","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-09-25T10:25:14.349Z","published":"2026-10-18T15:14:53.597Z","modified":"2026-10-30T12:38:08.950Z"}],"publishers":[{"name":"Linux","role":"CNA","organizationId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","modified":"2026-10-30T12:38:08.950Z"}],"references":[{"url":"https://git.kernel.org/stable/c/8cfde7b2fb7288f4f6b90293e8702ff897c682fe","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/47a948ba653a463d429e02fda2f06a3d6b78666d","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/8c9d5b8a96d6b93eb24e07b4163c89341ba29bd1","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/66a2179d02668f8df44b1a249899006f3ba38ea0","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/961c717e6bf0e53c2c2b1fe4aef1add9390fedab","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/65f39d09d73718611cee40399179323b5d4ead00","tags":[],"source":"Linux"}],"weaknesses":[],"applicability":[{"source":"Linux","statements":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.0","versionEndExcluding":"6.1.191"},{"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"}]}]}]}],"prioritization":[]},"title":"xfs: fix cursor and pointer handling when recovering iunlink buckets","titleSource":"Linux","descriptionSource":"Linux","description":"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.","score":7.8,"severity":"high","published":"2026-10-18T15:14:53.597Z","modified":"2026-10-30T12:38:08.950Z","withdrawn":false,"knownExploited":false,"affected":[],"products":[{"vendor":"Linux","name":"Linux","platforms":[],"versions":[{"version":"04755d2e5821b3afbaadd09fe5df58d04de36484","status":"affected","lessThan":"8cfde7b2fb7288f4f6b90293e8702ff897c682fe","versionType":"git"},{"version":"04755d2e5821b3afbaadd09fe5df58d04de36484","status":"affected","lessThan":"47a948ba653a463d429e02fda2f06a3d6b78666d","versionType":"git"},{"version":"04755d2e5821b3afbaadd09fe5df58d04de36484","status":"affected","lessThan":"8c9d5b8a96d6b93eb24e07b4163c89341ba29bd1","versionType":"git"},{"version":"04755d2e5821b3afbaadd09fe5df58d04de36484","status":"affected","lessThan":"66a2179d02668f8df44b1a249899006f3ba38ea0","versionType":"git"},{"version":"04755d2e5821b3afbaadd09fe5df58d04de36484","status":"affected","lessThan":"961c717e6bf0e53c2c2b1fe4aef1add9390fedab","versionType":"git"},{"version":"04755d2e5821b3afbaadd09fe5df58d04de36484","status":"affected","lessThan":"65f39d09d73718611cee40399179323b5d4ead00","versionType":"git"}],"defaultStatus":"unaffected","cpes":[],"source":"Linux","url":"https://www.cve.org/CVERecord?id=CVE-2026-98443"},{"vendor":"Linux","name":"Linux","platforms":[],"versions":[{"version":"6.0","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.0","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.113","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.55","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.9","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"defaultStatus":"affected","cpes":[],"source":"Linux","url":"https://www.cve.org/CVERecord?id=CVE-2026-98443"}],"remediation":[],"references":["https://git.kernel.org/stable/c/8cfde7b2fb7288f4f6b90293e8702ff897c682fe","https://git.kernel.org/stable/c/47a948ba653a463d429e02fda2f06a3d6b78666d","https://git.kernel.org/stable/c/8c9d5b8a96d6b93eb24e07b4163c89341ba29bd1","https://git.kernel.org/stable/c/66a2179d02668f8df44b1a249899006f3ba38ea0","https://git.kernel.org/stable/c/961c717e6bf0e53c2c2b1fe4aef1add9390fedab","https://git.kernel.org/stable/c/65f39d09d73718611cee40399179323b5d4ead00"],"sources":[{"name":"CVE","id":"CVE-2026-98443","modified":"2026-10-30T12:38:08.950Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-98443"}],"assessments":[{"source":"Linux","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","score":7.8}],"sourceAffected":[],"observedAt":"2026-10-30T14:01:22.509Z","kev":{"status":"not-listed","checkedAt":"2026-11-15T02:05:34.570Z"},"coverage":[{"source":"NVD","status":"not-checked"},{"source":"GHSA","status":"not-checked"},{"source":"EUVD","status":"not-checked"},{"source":"EPSS","status":"not-checked"}],"evidence":[],"aiSummary":null}