CVE Explorer

CVE-2026-45915

In the Linux kernel, the following vulnerability has been resolved: fat: avoid parent link count underflow in rmdir Corrupted FAT images can leave a directory inode with an incorrect i_nlink (e.g. 2 even though subdirectories exist). rmdir then unconditionally calls drop_nlink(dir) and can drive i_nlink to 0, triggering the WARN_ON in drop_nlink(). Add a sanity check in vfat_rmdir() and msdos_rmdir(): only drop the parent link count when it is at least 3, otherwise report a filesystem error.

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:cca2d56967253be61e0bb8c70fb1ef9dfae420d4237c8d80d9aae3675c06da22

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 2 assertions

{"defaultStatus":"unaffected","product":"Linux","programFiles":["fs/fat/namei_msdos.c","fs/fat/namei_vfat.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"7fe0de287e931e07cb96ecf1f449b2ebdb0e1115","status":"affected","version":"9a53c3a783c2fa9b969628e65695c11c3e51e673","versionType":"git"},{"lessThan":"9894c79fd9466612d0514be157b5c30cd93aa645","status":"affected","version":"9a53c3a783c2fa9b969628e65695c11c3e51e673","versionType":"git"},{"lessThan":"cd569b87378b9c33ae13c23d6bb9d205d66f7c4b","status":"affected","version":"9a5…

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:8af7d64ebd6e9da8be11e75e1694a73c80e3ab87fb8d7dbbd5ae75a312be5fe8 · sha256:ad55052b11a21172… · /containers/cna/affected/0

{"defaultStatus":"affected","product":"Linux","programFiles":["fs/fat/namei_msdos.c","fs/fat/namei_vfat.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"2.6.19"},{"lessThan":"2.6.19","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.252","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.202","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.165","version…

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:8af7d64ebd6e9da8be11e75e1694a73c80e3ab87fb8d7dbbd5ae75a312be5fe8 · sha256:ad55052b11a21172… · /containers/cna/affected/1

Affected products and versions

2 source assertions

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:8af7d64ebd6e9da8be11e75e1694a73c80e3ab87fb8d7dbbd5ae75a312be5fe8 · sha256:ad55052b11a21172… · /containers/cna/affected/0

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:8af7d64ebd6e9da8be11e75e1694a73c80e3ab87fb8d7dbbd5ae75a312be5fe8 · sha256:ad55052b11a21172… · /containers/cna/affected/1

Source references

8 source assertions

{"url":"https://git.kernel.org/stable/c/17866f8a0822d414cb02e621cf003a7d04396ef8"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:8af7d64ebd6e9da8be11e75e1694a73c80e3ab87fb8d7dbbd5ae75a312be5fe8 · sha256:ad55052b11a21172… · /containers/cna/references/5

{"url":"https://git.kernel.org/stable/c/7fe0de287e931e07cb96ecf1f449b2ebdb0e1115"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:8af7d64ebd6e9da8be11e75e1694a73c80e3ab87fb8d7dbbd5ae75a312be5fe8 · sha256:ad55052b11a21172… · /containers/cna/references/0

{"url":"https://git.kernel.org/stable/c/8cafcb881364af5ef3a8b9fed4db254054033d8a"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:8af7d64ebd6e9da8be11e75e1694a73c80e3ab87fb8d7dbbd5ae75a312be5fe8 · sha256:ad55052b11a21172… · /containers/cna/references/7

{"url":"https://git.kernel.org/stable/c/955c5d670b5ae07c78f4345e23a895638db96ce1"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:8af7d64ebd6e9da8be11e75e1694a73c80e3ab87fb8d7dbbd5ae75a312be5fe8 · sha256:ad55052b11a21172… · /containers/cna/references/4

{"url":"https://git.kernel.org/stable/c/9894c79fd9466612d0514be157b5c30cd93aa645"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:8af7d64ebd6e9da8be11e75e1694a73c80e3ab87fb8d7dbbd5ae75a312be5fe8 · sha256:ad55052b11a21172… · /containers/cna/references/1

{"url":"https://git.kernel.org/stable/c/cd569b87378b9c33ae13c23d6bb9d205d66f7c4b"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:8af7d64ebd6e9da8be11e75e1694a73c80e3ab87fb8d7dbbd5ae75a312be5fe8 · sha256:ad55052b11a21172… · /containers/cna/references/2

{"url":"https://git.kernel.org/stable/c/d0bb592fa9def2bace90ac8926c0a1d6fa8c1aa0"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:8af7d64ebd6e9da8be11e75e1694a73c80e3ab87fb8d7dbbd5ae75a312be5fe8 · sha256:ad55052b11a21172… · /containers/cna/references/6

{"url":"https://git.kernel.org/stable/c/d3b7ffa90f613938128432c7b2f35b7aa4bdd86b"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:8af7d64ebd6e9da8be11e75e1694a73c80e3ab87fb8d7dbbd5ae75a312be5fe8 · sha256:ad55052b11a21172… · /containers/cna/references/3

Attribution and limitations

CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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