Bug 2502490 (CVE-2026-64111) - CVE-2026-64111 kernel: lsm: hold cred_guard_mutex for lsm_set_self_attr()
Summary: CVE-2026-64111 kernel: lsm: hold cred_guard_mutex for lsm_set_self_attr()
Keywords:
Status: NEW
Alias: CVE-2026-64111
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-07-19 17:02 UTC by OSIDB Bzimport
Modified: 2026-10-27 21:23 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

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System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2026:67471 0 None None None 2026-09-15 06:14:34 UTC

Description OSIDB Bzimport 2026-07-19 17:02:13 UTC 
In 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.
Comment 3 Jon Orris 2026-09-15 06:14:33 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:67471 https://access.redhat.com/errata/RHSA-2026:67471
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