{"id":"CVE-2026-72189","state":"PUBLISHED","title":"ntfs: fail attrlist updates when the superblock is inactive","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nntfs: fail attrlist updates when the superblock is inactive\n\ngeneric_shutdown_super() clears SB_ACTIVE before evicting cached inodes.\nIf eviction selects the fake inode for a base inode's unnamed\n$ATTRIBUTE_LIST attribute, ntfs_evict_big_inode() drops the fake inode's\nreference on the base inode while the fake inode is still hashed and marked\nI_FREEING.\n\nThat iput can synchronously write back the base inode. The writeback path\nmay update mapping pairs and call ntfs_attrlist_update(), which\nunconditionally calls ntfs_attr_iget() for the same $ATTRIBUTE_LIST fake\ninode. VFS then finds the I_FREEING inode and waits for eviction to finish,\nbut the current task is still inside that eviction path, causing a\nself-deadlock in find_inode().\n\nFix this by mirroring the teardown guard used by __ntfs_write_inode():\nonce SB_ACTIVE has been cleared, do not try to iget the attribute-list\nfake inode. Return -EIO so teardown aborts the update instead of waiting on\nthe inode it is evicting.","publishedAt":"2026-08-15T05:53:50.373Z","updatedAt":"2026-08-17T05:09:53.903Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"495e90fa334828d4119061e2726af51d0a0fb4ed","status":"affected","lessThan":"d5379035355c0dcb1e92a2544d40f48441e1d637","versionType":"git"},{"version":"495e90fa334828d4119061e2726af51d0a0fb4ed","status":"affected","lessThan":"0ebe8f625ab0520217a425d7cd366e4670484941","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/ntfs/attrlist.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"7.1","status":"affected"},{"version":"0","status":"unaffected","lessThan":"7.1","versionType":"semver"},{"version":"7.1.5","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/ntfs/attrlist.c"]}],"references":["https://git.kernel.org/stable/c/d5379035355c0dcb1e92a2544d40f48441e1d637","https://git.kernel.org/stable/c/0ebe8f625ab0520217a425d7cd366e4670484941"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:58.252Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/72xxx/CVE-2026-72189.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-72189","state":"PUBLISHED","datePublished":"2026-08-15T05:53:50.373Z","dateUpdated":"2026-08-17T05:09:53.903Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-08-09T03:40:39.911Z"},"containers":{"cna":{"title":"ntfs: fail attrlist updates when the superblock is inactive","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nntfs: fail attrlist updates when the superblock is inactive\n\ngeneric_shutdown_super() clears SB_ACTIVE before evicting cached inodes.\nIf eviction selects the fake inode for a base inode's unnamed\n$ATTRIBUTE_LIST attribute, ntfs_evict_big_inode() drops the fake inode's\nreference on the base inode while the fake inode is still hashed and marked\nI_FREEING.\n\nThat iput can synchronously write back the base inode. The writeback path\nmay update mapping pairs and call ntfs_attrlist_update(), which\nunconditionally calls ntfs_attr_iget() for the same $ATTRIBUTE_LIST fake\ninode. VFS then finds the I_FREEING inode and waits for eviction to finish,\nbut the current task is still inside that eviction path, causing a\nself-deadlock in find_inode().\n\nFix this by mirroring the teardown guard used by __ntfs_write_inode():\nonce SB_ACTIVE has been cleared, do not try to iget the attribute-list\nfake inode. Return -EIO so teardown aborts the update instead of waiting on\nthe inode it is evicting."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"495e90fa334828d4119061e2726af51d0a0fb4ed","status":"affected","lessThan":"d5379035355c0dcb1e92a2544d40f48441e1d637","versionType":"git"},{"version":"495e90fa334828d4119061e2726af51d0a0fb4ed","status":"affected","lessThan":"0ebe8f625ab0520217a425d7cd366e4670484941","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/ntfs/attrlist.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"7.1","status":"affected"},{"version":"0","status":"unaffected","lessThan":"7.1","versionType":"semver"},{"version":"7.1.5","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/ntfs/attrlist.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/d5379035355c0dcb1e92a2544d40f48441e1d637"},{"url":"https://git.kernel.org/stable/c/0ebe8f625ab0520217a425d7cd366e4670484941"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-08-17T05:09:53.903Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"7.1","versionEndExcluding":"7.1.5"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"7.1","versionEndExcluding":"7.2"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}