lsm: hold cred_guard_mutex for lsm_set_self_attr()

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Summary

CVECVE-2026-64111
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-19 16:17:52 UTC
Updated2026-07-20 07:16:41 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: lsm: hold cred_guard_mutex for lsm_set_self_attr() Just as proc_pid_attr_write() already does before calling the LSM hook. This only matters for SELinux and AppArmor which check whether the process is being ptraced and if so, whether to allow the transition.

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected a04a1198088a1378d0389c250cc684f649bcc91e 82d3acee88593e3d9e71cad4b7d6b3cf70de9d07 git Not specified
CNA Linux Linux affected a04a1198088a1378d0389c250cc684f649bcc91e 5b906f31e977286888a9e31282589b545b249139 git Not specified
CNA Linux Linux affected a04a1198088a1378d0389c250cc684f649bcc91e a010cadaf5727b8417f62fe9021fcef14a5f9b51 git Not specified
CNA Linux Linux affected a04a1198088a1378d0389c250cc684f649bcc91e 4a9b16541ad3faf8bccb398532bf3f8b6bbf1188 git Not specified
CNA Linux Linux affected 6.8 Not specified
CNA Linux Linux unaffected 6.8 semver Not specified
CNA Linux Linux unaffected 6.12.92 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.34 6.18.* semver Not specified
CNA Linux Linux unaffected 7.0.11 7.0.* semver Not specified
CNA Linux Linux unaffected 7.1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/4a9b16541ad3faf8bccb398532bf3f8b6bbf1188 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/82d3acee88593e3d9e71cad4b7d6b3cf70de9d07 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/5b906f31e977286888a9e31282589b545b249139 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/a010cadaf5727b8417f62fe9021fcef14a5f9b51 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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