High 7.1Published Jul 19, 2026

CVE-2026-64111lsm: hold cred_guard_mutex for lsm_set_self_attr()

Updated under an hour ago (Oct 27, 2026, 2:10 AM ET)

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It affects Linux and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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.

CVSS: 7.1 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Analyzed
Record last updated: Aug 5, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from a04a1198088a1378d0389c250cc684f649bcc91e before 82d3acee88593e3d9e71cad4b7d6b3cf70de9d07; from a04a1198088a1378d0389c250cc684f649bcc91e before 5b906f31e977286888a9e31282589b545b249139; from a04a1198088a1378d0389c250cc684f649bcc91e before a010cadaf5727b8417f62fe9021fcef14a5f9b51; from a04a1198088a1378d0389c250cc684f649bcc91e before 4a9b16541ad3faf8bccb398532bf3f8b6bbf1188	CNA record
linux linux_kernel linux:linux_kernel	from 6.8 before 6.12.92; from 6.13 before 6.18.34; from 6.19 before 7.0.11; 7.1; 7.1; 7.1; 7.1	NVD

References

References

https://git.kernel.org/stable/c/82d3acee88593e3d9e71cad4b7d6b3cf70de9d07	patch
https://git.kernel.org/stable/c/5b906f31e977286888a9e31282589b545b249139	patch
https://git.kernel.org/stable/c/a010cadaf5727b8417f62fe9021fcef14a5f9b51	patch
https://git.kernel.org/stable/c/4a9b16541ad3faf8bccb398532bf3f8b6bbf1188	patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.