CVE-2026-98413
selinux: always fill AVC decision in avc_has_perm_noaudit()
Description
In the Linux kernel, the following vulnerability has been resolved: selinux: always fill AVC decision in avc_has_perm_noaudit() avc_has_perm_noaudit() is documented to return a copy of the access decision in @avd, but its early return for an empty requested permission set leaves the buffer untouched. All callers pass an uninitialized stack variable and afterwards feed it to avc_audit(), and the inode hook even stores it in the per-task decision cache. Fill in a deny-all, audit-all decision, similar to avd_init(), so every caller receives a defined value at no cost on the hot path.
INFO
Published Date :
Oct. 14, 2026, 2:17 p.m.
Last Modified :
Oct. 14, 2026, 2:17 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Solution
- Update the Linux kernel to the latest version.
- Verify SELinux policy configurations.
- Test system access controls thoroughly after updating.
References to Advisories, Solutions, and Tools
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information, practical solutions, and valuable tools related to
CVE-2026-98413.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-98413 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-2026-98413
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).
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The following list is the news that have been mention
CVE-2026-98413 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-98413 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.
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New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Oct. 14, 2026
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: selinux: always fill AVC decision in avc_has_perm_noaudit() avc_has_perm_noaudit() is documented to return a copy of the access decision in @avd, but its early return for an empty requested permission set leaves the buffer untouched. All callers pass an uninitialized stack variable and afterwards feed it to avc_audit(), and the inode hook even stores it in the per-task decision cache. Fill in a deny-all, audit-all decision, similar to avd_init(), so every caller receives a defined value at no cost on the hot path. Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/98xxx/CVE-2026-98413.json">CVE-2026-98413</a> Added Reference https://git.kernel.org/stable/c/24e00850bcff46b984f4c44b92e5499450fcfb5a Added Reference https://git.kernel.org/stable/c/5a6f9a872b4ff68877caf998bee352153b7154bc Added Reference https://git.kernel.org/stable/c/835133337c2ce200db56f62d018c79087dee2603 Added Reference https://git.kernel.org/stable/c/8861db305103107199b1426f25fde1fb6d465583 Added Reference https://git.kernel.org/stable/c/c781e737aa0de95289b1774d5fd29388895737a9 Added Reference https://git.kernel.org/stable/c/e308c5acfe283a66627fc407065626df4ab753ec Added Reference https://git.kernel.org/stable/c/e77461af13eab5c9a953cc52ec8432cc941d61e2 Added Reference https://git.kernel.org/stable/c/f9da796fa238f8e4414ee8481e6c979759a3d563