{"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": "2026-06-19T11:59:43.255Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-06-19T11:59:43.255Z"}, "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 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"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"}}}}

{}

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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---"}], "id": "CVE-2026-46160", "lastModified": "2026-06-09T21:06:29.750", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2026-05-28T10:16:31.647", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/36fcc2c7517f8a86379154c9793f867592aa8b7e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/999757231c49376cd1a37308d2c8c4c9932571e1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/aa9c3ecaf7337df3a689318584f879b5339ede0f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/cc3c0a0f965754ce230d93ba44ee5b34fbe6138a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/fb388eb58c1ba047ccabc33901839acfecadcf49"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: btrfs: fix missing last_unlink_trans update when removing a directory", "id": "2482647", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2482647"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-911", "details": ["A flaw was found in the Linux kernel's Btrfs filesystem. This vulnerability occurs when the `last_unlink_trans` field is not properly updated during directory removal. If a user maintains an open file descriptor to a removed directory and subsequently performs a filesystem synchronization (fsync) operation, it can lead to filesystem corruption. This corruption may prevent the filesystem from mounting after a power failure, resulting in a Denial of Service (DoS)."], "name": "CVE-2026-46160", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-05-28T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-46160\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-46160\nhttps://lore.kernel.org/linux-cve-announce/2026052824-CVE-2026-46160-5908@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,cc3c0a0f965754ce230d93ba44ee5b34fbe6138a)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,aa9c3ecaf7337df3a689318584f879b5339ede0f)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,fb388eb58c1ba047ccabc33901839acfecadcf49)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,36fcc2c7517f8a86379154c9793f867592aa8b7e)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,999757231c49376cd1a37308d2c8c4c9932571e1)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,6.6.141)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,6.12.91)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,6.18.30)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,7.0.7)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.141,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.91,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.30,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.0.7,7.1.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.1-rc2,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-05-28T12:15:21.824882+00:00", "updated": "2026-06-10T02:15:19.597365+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}