{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-46160", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-05-13T15:03:33.102Z", "datePublished": "2026-05-28T09:36:15.580Z", "dateUpdated": "2026-05-30T10:42:10.859Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-30T10:42:10.859Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: fix missing last_unlink_trans update when removing a directory\n\nWhen removing a directory we are not updating its last_unlink_trans field,\nwhich can result in incorrect fsync behaviour in case some one fsyncs the\ndirectory after it was removed because it's holding a file descriptor on\nit.\n\nExample scenario:\n\n   mkdir /mnt/dir1\n   mkdir /mnt/dir1/dir2\n   mkdir /mnt/dir3\n\n   sync -f /mnt\n\n   # Do some change to the directory and fsync it.\n   chmod 700 /mnt/dir1\n   xfs_io -c fsync /mnt/dir1\n\n   # Move dir2 out of dir1 so that dir1 becomes empty.\n   mv /mnt/dir1/dir2 /mnt/dir3/\n\n   open fd on /mnt/dir1\n   call rmdir(2) on path \"/mnt/dir1\"\n   fsync fd\n\n   <trigger power failure>\n\nWhen attempting to mount the filesystem, the log replay will fail with\nan -EIO error and dmesg/syslog has the following:\n\n   [445771.626482] BTRFS info (device dm-0): first mount of filesystem 0368bbea-6c5e-44b5-b409-09abe496e650\n   [445771.626486] BTRFS info (device dm-0): using crc32c checksum algorithm\n   [445771.627912] BTRFS info (device dm-0): start tree-log replay\n   [445771.628335] page: refcount:2 mapcount:0 mapping:0000000061443ddc index:0x1d00 pfn:0x7072a5\n   [445771.629453] memcg:ffff89f400351b00\n   [445771.629892] aops:btree_aops [btrfs] ino:1\n   [445771.630737] flags: 0x17fffc00000402a(uptodate|lru|private|writeback|node=0|zone=2|lastcpupid=0x1ffff)\n   [445771.632359] raw: 017fffc00000402a fffff47284d950c8 fffff472907b7c08 ffff89f458e412b8\n   [445771.633713] raw: 0000000000001d00 ffff89f6c51d1a90 00000002ffffffff ffff89f400351b00\n   [445771.635029] page dumped because: eb page dump\n   [445771.635825] BTRFS critical (device dm-0): corrupt leaf: root=5 block=30408704 slot=10 ino=258, invalid nlink: has 2 expect no more than 1 for dir\n   [445771.638088] BTRFS info (device dm-0): leaf 30408704 gen 10 total ptrs 17 free space 14878 owner 5\n   [445771.638091] BTRFS info (device dm-0): refs 4 lock_owner 0 current 3581087\n   [445771.638094] \titem 0 key (256 INODE_ITEM 0) itemoff 16123 itemsize 160\n   [445771.638097] \t\tinode generation 3 transid 9 size 16 nbytes 16384\n   [445771.638098] \t\tblock group 0 mode 40755 links 1 uid 0 gid 0\n   [445771.638100] \t\trdev 0 sequence 2 flags 0x0\n   [445771.638102] \t\tatime 1775744884.0\n   [445771.660056] \t\tctime 1775744885.645502983\n   [445771.660058] \t\tmtime 1775744885.645502983\n   [445771.660060] \t\totime 1775744884.0\n   [445771.660062] \titem 1 key (256 INODE_REF 256) itemoff 16111 itemsize 12\n   [445771.660064] \t\tindex 0 name_len 2\n   [445771.660066] \titem 2 key (256 DIR_ITEM 1843588421) itemoff 16077 itemsize 34\n   [445771.660068] \t\tlocation key (259 1 0) type 2\n   [445771.660070] \t\ttransid 9 data_len 0 name_len 4\n   [445771.660075] \titem 3 key (256 DIR_ITEM 2363071922) itemoff 16043 itemsize 34\n   [445771.660076] \t\tlocation key (257 1 0) type 2\n   [445771.660077] \t\ttransid 9 data_len 0 name_len 4\n   [445771.660078] \titem 4 key (256 DIR_INDEX 2) itemoff 16009 itemsize 34\n   [445771.660079] \t\tlocation key (257 1 0) type 2\n   [445771.660080] \t\ttransid 9 data_len 0 name_len 4\n   [445771.660081] \titem 5 key (256 DIR_INDEX 3) itemoff 15975 itemsize 34\n   [445771.660082] \t\tlocation key (259 1 0) type 2\n   [445771.660083] \t\ttransid 9 data_len 0 name_len 4\n   [445771.660084] \titem 6 key (257 INODE_ITEM 0) itemoff 15815 itemsize 160\n   [445771.660086] \t\tinode generation 9 transid 9 size 8 nbytes 0\n   [445771.660087] \t\tblock group 0 mode 40777 links 1 uid 0 gid 0\n   [445771.660088] \t\trdev 0 sequence 2 flags 0x0\n   [445771.660089] \t\tatime 1775744885.641174097\n   [445771.660090] \t\tctime 1775744885.645502983\n   [445771.660091] \t\tmtime 1775744885.645502983\n   [445771.660105] \t\totime 1775744885.641174097\n   [445771.660106] \titem 7 key (257 INODE_REF 256) itemoff 15801 itemsize 14\n   [445771.660107] \t\tindex 2 name_len 4\n   [445771.660108] \titem 8 key (257 DIR_ITEM 2676584006) itemoff 15767 itemsize 34\n   [445771.660109] \t\tlocation key (2\n---truncated---"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/btrfs/inode.c"], "versions": [{"version": "12fcfd22fe5bf4fe74710232098bc101af497995", "lessThan": "cc3c0a0f965754ce230d93ba44ee5b34fbe6138a", "status": "affected", "versionType": "git"}, {"version": "12fcfd22fe5bf4fe74710232098bc101af497995", "lessThan": "aa9c3ecaf7337df3a689318584f879b5339ede0f", "status": "affected", "versionType": "git"}, {"version": "12fcfd22fe5bf4fe74710232098bc101af497995", "lessThan": "fb388eb58c1ba047ccabc33901839acfecadcf49", "status": "affected", "versionType": "git"}, {"version": "12fcfd22fe5bf4fe74710232098bc101af497995", "lessThan": "36fcc2c7517f8a86379154c9793f867592aa8b7e", "status": "affected", "versionType": "git"}, {"version": "12fcfd22fe5bf4fe74710232098bc101af497995", "lessThan": "999757231c49376cd1a37308d2c8c4c9932571e1", "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/inode.c"], "versions": [{"version": "2.6.30", "status": "affected"}, {"version": "0", "lessThan": "2.6.30", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.141", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.91", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.30", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0.7", "lessThanOrEqual": "7.0.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1-rc2", "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": "2.6.30", "versionEndExcluding": "6.6.141"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.30", "versionEndExcluding": "6.12.91"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.30", "versionEndExcluding": "6.18.30"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.30", "versionEndExcluding": "7.0.7"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.30", "versionEndExcluding": "7.1-rc2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/cc3c0a0f965754ce230d93ba44ee5b34fbe6138a"}, {"url": "https://git.kernel.org/stable/c/aa9c3ecaf7337df3a689318584f879b5339ede0f"}, {"url": "https://git.kernel.org/stable/c/fb388eb58c1ba047ccabc33901839acfecadcf49"}, {"url": "https://git.kernel.org/stable/c/36fcc2c7517f8a86379154c9793f867592aa8b7e"}, {"url": "https://git.kernel.org/stable/c/999757231c49376cd1a37308d2c8c4c9932571e1"}], "title": "btrfs: fix missing last_unlink_trans update when removing a directory", "x_generator": {"engine": "bippy-1.2.0"}}}}