CVE-2026-98413
selinux: always fill AVC decision in avc_has_perm_noaudit()
Published Oct 14, 2026 · corrected/updated Oct 15, 2026 · Linux Linux Kernel · evidence confidence high
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.
Grounded briefings
Catalog interpretations for three audiences. Each brief cites ingested metadata and the original advisories below. They are not independent research and they do not invent exploit steps.
Executive
CVE-2026-98413 is a high public vulnerability record for Linux Linux Kernel. It is not currently listed in the CISA Known Exploited catalog. Check the linked vendor or CERT advisories for patch status. This summary is a catalog interpretation of the ingested metadata and cites the original advisories below.
System administrator
Identify whether Linux Linux Kernel is in your estate, then compare installed versions with the affected ranges. Affected packages or ranges on record: Kernel (5.1.0 → 5.10.271); kernel. Check the linked vendor or CERT advisories for patch status. Prefer the vendor or distribution advisory linked in Sources before changing production systems. This is a catalog interpretation, not a runbook.
Security analyst
Signals on file: EPSS 0.2%. It is not currently listed in the CISA Known Exploited catalog. Sources contributing to this record: cve_org, epss, linux_kernel, osv. Public exploit references, when present, are outbound links only and are not proof of active exploitation. This is a catalog interpretation of stored metadata.
Exploitation and remediation
Exploitation evidence
Not listed as known exploited in CISA KEV. Not in CISA KEV or VulnCheck KEV.
Patch and remediation
No required-action text is stored yet. Use the vendor or CERT links in Sources for patch availability.
Safe detection guidance
Compare installed versions with the affected ranges below and verify the advisory from the original publisher. This site stores metadata and outbound links only; it does not ship exploit code or proof-of-concept payloads.
Code
The project this record applies to. Exploit listings stay in References.
Timeline
Detection, updates, and resolution for this record.
Oct 14, 2026 · OpenSSF OSV / OSV Scanner
Detected
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 in
Oct 15, 2026 · OpenSSF OSV / OSV Scanner
Fix available
Kernel fixed in 5.10.271
Oct 15, 2026 · OpenSSF OSV / OSV Scanner
Fix available
Kernel fixed in 5.10.271
Oct 15, 2026 · OpenSSF OSV / OSV Scanner
Updated
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 in
Affected
- Linux Kernel5.1.0 → 5.10.271
- linux kernelversion unspecified
Sources
- CVE.orgVulnerability recordCVE-2026-98413
Official CVE identifier
cve.org - FIRST EPSSExploitation probabilityCVE-2026-98413
30-day exploitation probability 0.2%
first.org - Linux Kernel CVEVendor advisoryCVE-2026-98413
From: Greg Kroah-Hartman 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 ret
git.kernel.org - OpenSSF OSV / OSV ScannerPackage advisoryCVE-2026-98413
selinux: always fill AVC decision in avc_has_perm_noaudit()
osv.dev - Tenable CVE DatabaseVulnerability recordCVE-2026-98413
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 in
tenable.com