CVE-2026-64111
lsm: hold cred_guard_mutex for lsm_set_self_attr()
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.
INFO
Published Date :
July 19, 2026, 4:17 p.m.
Last Modified :
Aug. 12, 2026, 3:50 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
Solution
- Update the Linux kernel to the patched version.
- Ensure the cred_guard_mutex is held correctly.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-64111.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-64111 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-64111
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-64111 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-64111 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Aug. 12, 2026
Action Type Old Value New Value Added CWE NVD-CWE-noinfo Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:7.1:rc3:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:7.1:rc4:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.13 up to (excluding) 6.18.34 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.19 up to (excluding) 7.0.11 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.8 up to (excluding) 6.12.92 Added Reference Type kernel.org: https://git.kernel.org/stable/c/4a9b16541ad3faf8bccb398532bf3f8b6bbf1188 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/5b906f31e977286888a9e31282589b545b249139 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/82d3acee88593e3d9e71cad4b7d6b3cf70de9d07 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/a010cadaf5727b8417f62fe9021fcef14a5f9b51 Types: Patch -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jul. 20, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jul. 20, 2026
Action Type Old Value New Value Changed Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '1da177e4c3f41524e886b7f1b8a0c1fc7321cac2', 'lessThan': '82d3acee88593e3d9e71cad4b7d6b3cf70de9d07', 'versionType': 'git'}, {'status': 'affected', 'version': '1da177e4c3f41524e886b7f1b8a0c1fc7321cac2', 'lessThan': '5b906f31e977286888a9e31282589b545b249139', 'versionType': 'git'}, {'status': 'affected', 'version': '1da177e4c3f41524e886b7f1b8a0c1fc7321cac2', 'lessThan': 'a010cadaf5727b8417f62fe9021fcef14a5f9b51', 'versionType': 'git'}, {'status': 'affected', 'version': '1da177e4c3f41524e886b7f1b8a0c1fc7321cac2', 'lessThan': '4a9b16541ad3faf8bccb398532bf3f8b6bbf1188', 'versionType': 'git'}, {'status': 'affected', 'version': '0', 'lessThan': '6.12.92', 'versionType': 'semver'}, {'status': 'affected', 'version': '0', 'lessThan': '6.18.34', 'versionType': 'semver'}, {'status': 'affected', 'version': '0', 'lessThan': '7.0.11', 'versionType': 'semver'}], 'programFiles': ['security/lsm_syscalls.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'unaffected', 'version': '6.12.92', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.34', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.0.11', 'versionType': 'semver', 'lessThanOrEqual': '7.0.*'}, {'status': 'unaffected', 'version': '7.1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['security/lsm_syscalls.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'a04a1198088a1378d0389c250cc684f649bcc91e', 'lessThan': '82d3acee88593e3d9e71cad4b7d6b3cf70de9d07', 'versionType': 'git'}, {'status': 'affected', 'version': 'a04a1198088a1378d0389c250cc684f649bcc91e', 'lessThan': '5b906f31e977286888a9e31282589b545b249139', 'versionType': 'git'}, {'status': 'affected', 'version': 'a04a1198088a1378d0389c250cc684f649bcc91e', 'lessThan': 'a010cadaf5727b8417f62fe9021fcef14a5f9b51', 'versionType': 'git'}, {'status': 'affected', 'version': 'a04a1198088a1378d0389c250cc684f649bcc91e', 'lessThan': '4a9b16541ad3faf8bccb398532bf3f8b6bbf1188', 'versionType': 'git'}], 'programFiles': ['security/lsm_syscalls.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.8'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.8', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.12.92', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.34', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.0.11', 'versionType': 'semver', 'lessThanOrEqual': '7.0.*'}, {'status': 'unaffected', 'version': '7.1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['security/lsm_syscalls.c'], 'defaultStatus': 'affected'}] -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jul. 19, 2026
Action Type Old Value New Value Added Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '1da177e4c3f41524e886b7f1b8a0c1fc7321cac2', 'lessThan': '82d3acee88593e3d9e71cad4b7d6b3cf70de9d07', 'versionType': 'git'}, {'status': 'affected', 'version': '1da177e4c3f41524e886b7f1b8a0c1fc7321cac2', 'lessThan': '5b906f31e977286888a9e31282589b545b249139', 'versionType': 'git'}, {'status': 'affected', 'version': '1da177e4c3f41524e886b7f1b8a0c1fc7321cac2', 'lessThan': 'a010cadaf5727b8417f62fe9021fcef14a5f9b51', 'versionType': 'git'}, {'status': 'affected', 'version': '1da177e4c3f41524e886b7f1b8a0c1fc7321cac2', 'lessThan': '4a9b16541ad3faf8bccb398532bf3f8b6bbf1188', 'versionType': 'git'}, {'status': 'affected', 'version': '0', 'lessThan': '6.12.92', 'versionType': 'semver'}, {'status': 'affected', 'version': '0', 'lessThan': '6.18.34', 'versionType': 'semver'}, {'status': 'affected', 'version': '0', 'lessThan': '7.0.11', 'versionType': 'semver'}], 'programFiles': ['security/lsm_syscalls.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'unaffected', 'version': '6.12.92', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.34', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.0.11', 'versionType': 'semver', 'lessThanOrEqual': '7.0.*'}, {'status': 'unaffected', 'version': '7.1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['security/lsm_syscalls.c'], 'defaultStatus': 'affected'}] Added 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. Added Reference https://git.kernel.org/stable/c/4a9b16541ad3faf8bccb398532bf3f8b6bbf1188 Added Reference https://git.kernel.org/stable/c/5b906f31e977286888a9e31282589b545b249139 Added Reference https://git.kernel.org/stable/c/82d3acee88593e3d9e71cad4b7d6b3cf70de9d07 Added Reference https://git.kernel.org/stable/c/a010cadaf5727b8417f62fe9021fcef14a5f9b51