CVE Explorer

CVE-2026-53381

In the Linux kernel, the following vulnerability has been resolved: virtiofs: fix UAF on submount umount iput() called from fuse_release_end() can Oops if the super block has already been destroyed. Normally this is prevented by waiting for num_waiting to go down to zero before commencing with super block shutdown. This only works, however, for the last submount instance, as the wait counter is per connection, not per superblock. Revert to using synchronous release requests for the auto_sub

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:f400d2a7fca99a16e7b4425f5060f4b3d3fa68795640cebeec61b1d919bdeb46

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 2 assertions

{"defaultStatus":"affected","product":"Linux","programFiles":["fs/fuse/file.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.18"},{"lessThan":"6.18","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.260","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.211","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.177","versionType":"semver"},{"lessThanOrEqua…

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:f5f71a728bf47d73c064fabd178954ce4b25fee425f4a7baf8ffaffd679dddb1 · sha256:bbde4e1ef7b64d18… · /containers/cna/affected/1

{"defaultStatus":"unaffected","product":"Linux","programFiles":["fs/fuse/file.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"607a1d4c42f649e6197567c0448fd9ebb316cd42","status":"affected","version":"548e1f2bac1d4df91a6138f26bb4ab00323fd948","versionType":"git"},{"lessThan":"1cc0e3a0c6499aaaa2f21a4fcbba388486afb25e","status":"affected","version":"cfd1aa3e2b71f3327cb373c45a897c9028c62b35","versionType":"git"},{"lessThan":"0b809199ff87c44487e516a725dd4be2185712ce","status":"affected","version":"83b375c6efef69b1066ad2d79601221…

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:f5f71a728bf47d73c064fabd178954ce4b25fee425f4a7baf8ffaffd679dddb1 · sha256:bbde4e1ef7b64d18… · /containers/cna/affected/0

Affected products and versions

2 source assertions

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:f5f71a728bf47d73c064fabd178954ce4b25fee425f4a7baf8ffaffd679dddb1 · sha256:bbde4e1ef7b64d18… · /containers/cna/affected/1

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:f5f71a728bf47d73c064fabd178954ce4b25fee425f4a7baf8ffaffd679dddb1 · sha256:bbde4e1ef7b64d18… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"baseScore":7.8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:f5f71a728bf47d73c064fabd178954ce4b25fee425f4a7baf8ffaffd679dddb1 · sha256:bbde4e1ef7b64d18… · /containers/cna/metrics/0/cvssV3_1

Source references

9 source assertions

{"url":"https://git.kernel.org/stable/c/06b41351779e9289e8785694ade9042ae85e41ea"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:f5f71a728bf47d73c064fabd178954ce4b25fee425f4a7baf8ffaffd679dddb1 · sha256:bbde4e1ef7b64d18… · /containers/cna/references/8

{"url":"https://git.kernel.org/stable/c/0b809199ff87c44487e516a725dd4be2185712ce"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:f5f71a728bf47d73c064fabd178954ce4b25fee425f4a7baf8ffaffd679dddb1 · sha256:bbde4e1ef7b64d18… · /containers/cna/references/2

{"url":"https://git.kernel.org/stable/c/1cc0e3a0c6499aaaa2f21a4fcbba388486afb25e"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:f5f71a728bf47d73c064fabd178954ce4b25fee425f4a7baf8ffaffd679dddb1 · sha256:bbde4e1ef7b64d18… · /containers/cna/references/1

{"url":"https://git.kernel.org/stable/c/2181a09ba980f142650fb053666350ead4471cfe"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:f5f71a728bf47d73c064fabd178954ce4b25fee425f4a7baf8ffaffd679dddb1 · sha256:bbde4e1ef7b64d18… · /containers/cna/references/3

{"url":"https://git.kernel.org/stable/c/2abfd3ffbd9452f72535d96ff3982b3ab1f8f2f9"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:f5f71a728bf47d73c064fabd178954ce4b25fee425f4a7baf8ffaffd679dddb1 · sha256:bbde4e1ef7b64d18… · /containers/cna/references/5

{"url":"https://git.kernel.org/stable/c/39a2b95e008665c14f84e50ed411d898df7cd11b"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:f5f71a728bf47d73c064fabd178954ce4b25fee425f4a7baf8ffaffd679dddb1 · sha256:bbde4e1ef7b64d18… · /containers/cna/references/6

{"url":"https://git.kernel.org/stable/c/607a1d4c42f649e6197567c0448fd9ebb316cd42"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:f5f71a728bf47d73c064fabd178954ce4b25fee425f4a7baf8ffaffd679dddb1 · sha256:bbde4e1ef7b64d18… · /containers/cna/references/0

{"url":"https://git.kernel.org/stable/c/97c4691653d145dcc699eca5d3aba3219a520f1f"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:f5f71a728bf47d73c064fabd178954ce4b25fee425f4a7baf8ffaffd679dddb1 · sha256:bbde4e1ef7b64d18… · /containers/cna/references/4

{"url":"https://git.kernel.org/stable/c/e09412a714bcd49375198427bb4aa005037a9d6f"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:f5f71a728bf47d73c064fabd178954ce4b25fee425f4a7baf8ffaffd679dddb1 · sha256:bbde4e1ef7b64d18… · /containers/cna/references/7

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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