CVE-2026-98413: Linux kernel · selinux: always fill AVC decision in avc_has_perm_noaudit()
Affects Linux kernelSource GCVE Database
Not known to be exploited.
Data as of 28 Oct 2026, 01:28 UTC
Rated by Threat Radar · CVSS not yet scored by NVD
Exploitation evidence
Disclosed: evidence found.
CVE published 14 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 26.04 LTSlinuxpkg:deb/ubuntu/linux?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-awspkg:deb/ubuntu/linux-aws?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-azurepkg:deb/ubuntu/linux-azure?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-azure-fdepkg:deb/ubuntu/linux-azure-fde?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-gcppkg:deb/ubuntu/linux-gcp?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-gkepkg:deb/ubuntu/linux-gke?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
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.
References
- ubuntu.com/security/CVE-2026-98413 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-98413 (opens in a new tab)
- git.kernel.org/stable/c/e308c5acfe283a66627fc407065626df4ab753ec (opens in a new tab)
- git.kernel.org/stable/c/e77461af13eab5c9a953cc52ec8432cc941d61e2 (opens in a new tab)
- git.kernel.org/stable/c/f9da796fa238f8e4414ee8481e6c979759a3d563 (opens in a new tab)
- git.kernel.org/stable/c/24e00850bcff46b984f4c44b92e5499450fcfb5a (opens in a new tab)
- git.kernel.org/stable/c/8861db305103107199b1426f25fde1fb6d465583 (opens in a new tab)
- git.kernel.org/stable/c/5a6f9a872b4ff68877caf998bee352153b7154bc (opens in a new tab)
- git.kernel.org/stable/c/c781e737aa0de95289b1774d5fd29388895737a9 (opens in a new tab)
- git.kernel.org/stable/c/835133337c2ce200db56f62d018c79087dee2603 (opens in a new tab)