Baitaphish
Security intelligence
SearchLatest briefing
CVE Explorer

CVE-2026-53341

In the Linux kernel, the following vulnerability has been resolved: fhandle: fix UAF due to unlocked ->mnt_ns read in may_decode_fh() may_decode_fh() accesses mount::mnt_ns without holding any locks; that means the mount can concurrently be unmounted, and the mnt_namespace can concurrently be freed after an RCU grace period. This race can happens as follows, assuming that the mount point was created by open_tree(..., OPEN_TREE_CLONE): thread 1 thread 2 RCU
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:97542094fb5ffb15a2d51c6588c60061ec56b6d0a4088068b5b0908f5d7a6086
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 2 assertions

{"defaultStatus":"affected","product":"Linux","programFiles":["fs/fhandle.c","fs/mount.h","fs/namespace.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.11"},{"lessThan":"6.11","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.95","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.36","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.13","versionType":"…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:40e917cccd6712ba55064185e1dfbf9e4fbef51ca659e969043827bcbb7fe6f2 · sha256:6ada0013924f0d18… · /containers/cna/affected/1

{"defaultStatus":"unaffected","product":"Linux","programFiles":["fs/fhandle.c","fs/mount.h","fs/namespace.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"15ea8dc42a02259d49dee38a658d40f60fcd75ed","status":"affected","version":"620c266f394932e5decc4b34683a75dfc59dc2f4","versionType":"git"},{"lessThan":"32138633e51e6db59e474765cf93268c92b42888","status":"affected","version":"620c266f394932e5decc4b34683a75dfc59dc2f4","versionType":"git"},{"lessThan":"a8ed2c29fcfdac78db96c9da4e659c8a513f2a94","status":"affected","version":"620…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:40e917cccd6712ba55064185e1dfbf9e4fbef51ca659e969043827bcbb7fe6f2 · sha256:6ada0013924f0d18… · /containers/cna/affected/0

Affected products and versions

2 source assertions
{"defaultStatus":"affected","product":"Linux","programFiles":["fs/fhandle.c","fs/mount.h","fs/namespace.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.11"},{"lessThan":"6.11","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.95","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.36","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.13","versionType":"…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:40e917cccd6712ba55064185e1dfbf9e4fbef51ca659e969043827bcbb7fe6f2 · sha256:6ada0013924f0d18… · /containers/cna/affected/1
{"defaultStatus":"unaffected","product":"Linux","programFiles":["fs/fhandle.c","fs/mount.h","fs/namespace.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"15ea8dc42a02259d49dee38a658d40f60fcd75ed","status":"affected","version":"620c266f394932e5decc4b34683a75dfc59dc2f4","versionType":"git"},{"lessThan":"32138633e51e6db59e474765cf93268c92b42888","status":"affected","version":"620c266f394932e5decc4b34683a75dfc59dc2f4","versionType":"git"},{"lessThan":"a8ed2c29fcfdac78db96c9da4e659c8a513f2a94","status":"affected","version":"620…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:40e917cccd6712ba55064185e1dfbf9e4fbef51ca659e969043827bcbb7fe6f2 · sha256:6ada0013924f0d18… · /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:v2:40e917cccd6712ba55064185e1dfbf9e4fbef51ca659e969043827bcbb7fe6f2 · sha256:6ada0013924f0d18… · /containers/cna/metrics/0/cvssV3_1

Source references

4 source assertions
{"url":"https://git.kernel.org/stable/c/15ea8dc42a02259d49dee38a658d40f60fcd75ed"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:40e917cccd6712ba55064185e1dfbf9e4fbef51ca659e969043827bcbb7fe6f2 · sha256:6ada0013924f0d18… · /containers/cna/references/0
{"url":"https://git.kernel.org/stable/c/32138633e51e6db59e474765cf93268c92b42888"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:40e917cccd6712ba55064185e1dfbf9e4fbef51ca659e969043827bcbb7fe6f2 · sha256:6ada0013924f0d18… · /containers/cna/references/1
{"url":"https://git.kernel.org/stable/c/40ab6644b99685755f740b872c00ef40d9aa870e"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:40e917cccd6712ba55064185e1dfbf9e4fbef51ca659e969043827bcbb7fe6f2 · sha256:6ada0013924f0d18… · /containers/cna/references/3
{"url":"https://git.kernel.org/stable/c/a8ed2c29fcfdac78db96c9da4e659c8a513f2a94"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:40e917cccd6712ba55064185e1dfbf9e4fbef51ca659e969043827bcbb7fe6f2 · sha256:6ada0013924f0d18… · /containers/cna/references/2

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.

← Back to CVE Explorer