CVE-2026-64111
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.14%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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 3.1
- 7.1 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
- EPSS
- 0.14% probability · 3th percentile
- CISA KEV
- Not listed
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/4a9b16541ad3faf8bccb398532bf3f8b6bbf1188Patch
- https://git.kernel.org/stable/c/5b906f31e977286888a9e31282589b545b249139Patch
- https://git.kernel.org/stable/c/82d3acee88593e3d9e71cad4b7d6b3cf70de9d07Patch
- https://git.kernel.org/stable/c/a010cadaf5727b8417f62fe9021fcef14a5f9b51Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.