fanotify: fix false positive on permission events

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Summary

CVECVE-2026-46150
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-28 10:16:30 UTC
Updated2026-06-09 21:06:10 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: fanotify: fix false positive on permission events fsnotify_get_mark_safe() may return false for a mark on an unrelated group, which results in bypassing the permission check. Fix by skipping over detached marks that are not in the current group.

Risk And Classification

Primary CVSS: v3.1 7.1 HIGH from 416baaa9-dc9f-4396-8d5f-8c081fb06d67

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

EPSS: 0.000140000 probability, percentile 0.026370000 (date 2026-06-04)

Problem Types: NVD-CWE-noinfo

VersionSourceTypeScoreSeverityVector
3.1416baaa9-dc9f-4396-8d5f-8c081fb06d67Secondary7.1HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
3.1CNADECLARED7.1HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected abc77577a669f424c5d0c185b9994f2621c52aa4 a24765332e129c1916d5a6615418b75599b8fcdc git Not specified
CNA Linux Linux affected abc77577a669f424c5d0c185b9994f2621c52aa4 4a7611ad653785fcdea5ff5f4441e2b7d05b7f11 git Not specified
CNA Linux Linux affected abc77577a669f424c5d0c185b9994f2621c52aa4 04bb66be92f48ed13c3faf1139d892df228789bc git Not specified
CNA Linux Linux affected abc77577a669f424c5d0c185b9994f2621c52aa4 895ebbedf88318607c24acc0f591c74b165e1d0a git Not specified
CNA Linux Linux affected abc77577a669f424c5d0c185b9994f2621c52aa4 f130790f1acc8399f32652846c875a251efd040f git Not specified
CNA Linux Linux affected abc77577a669f424c5d0c185b9994f2621c52aa4 7baa02b0ae9d17ec5f08836d8ea88ce1927d0678 git Not specified
CNA Linux Linux affected abc77577a669f424c5d0c185b9994f2621c52aa4 b7b24b28c8cd55844cab908f4f39dded638d5538 git Not specified
CNA Linux Linux affected abc77577a669f424c5d0c185b9994f2621c52aa4 7746e3bd4cc19b5092e00d32d676e329bfcb6900 git Not specified
CNA Linux Linux affected 4.12 Not specified
CNA Linux Linux unaffected 4.12 semver Not specified
CNA Linux Linux unaffected 5.10.258 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.209 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.175 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.140 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.88 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.30 6.18.* semver Not specified
CNA Linux Linux unaffected 7.0.7 7.0.* semver Not specified
CNA Linux Linux unaffected 7.1-rc2 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/7746e3bd4cc19b5092e00d32d676e329bfcb6900 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/7baa02b0ae9d17ec5f08836d8ea88ce1927d0678 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/a24765332e129c1916d5a6615418b75599b8fcdc 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/895ebbedf88318607c24acc0f591c74b165e1d0a 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/b7b24b28c8cd55844cab908f4f39dded638d5538 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/f130790f1acc8399f32652846c875a251efd040f 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/4a7611ad653785fcdea5ff5f4441e2b7d05b7f11 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/04bb66be92f48ed13c3faf1139d892df228789bc 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
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