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CVE.org (no NVD analysis yet)· CNA Linux

CVE-2026-98413: selinux: always fill AVC decision in avc_has_perm_noaudit()

Noroxi assessment

Priority: Monitor (action score 0/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.22% (FIRST EPSS).
  • Fixed version: Linux Linux 24e00850bcff46b984f4c44b92e5499450fcfb5a, 5a6f9a872b4ff68877caf998bee352153b7154bc, 835133337c2ce200db56f62d018c79087dee2603; azl3 kernel 6.6.157.1-1 on Azure Linux 3.0 6.6.159.1-1.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 24e00850bcff46b984f4c44b92e5499450fcfb5a, 5a6f9a872b4ff68877caf998bee352153b7154bc, 835133337c2ce200db56f62d018c79087dee2603; azl3 kernel 6.6.157.1-1 on Azure Linux 3.0 6.6.159.1-1 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

—No exploit Fix available
Published
Oct 14, 2026
Updated
Oct 19, 2026
EPSS
0.2% · 12th percentile
CWE
—

Report tools

JSON

Action score

0

Monitor

Low priority for now.

CVSS
0 / 40 · —
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

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  • when exploit code appears or is weaponized
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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

—

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 5.1affected
    • e6f2f381e4015386a656a369835f949c26000e6b and later · before c781e737aa0de95289b1774d5fd29388895737a9affected · git
    • e6f2f381e4015386a656a369835f949c26000e6b and later · before e308c5acfe283a66627fc407065626df4ab753ecaffected · git
    • e6f2f381e4015386a656a369835f949c26000e6b and later · before f9da796fa238f8e4414ee8481e6c979759a3d563affected · git
    • e6f2f381e4015386a656a369835f949c26000e6b and later · before e77461af13eab5c9a953cc52ec8432cc941d61e2affected · git
    • e6f2f381e4015386a656a369835f949c26000e6b and later · before 5a6f9a872b4ff68877caf998bee352153b7154bcaffected · git
    • e6f2f381e4015386a656a369835f949c26000e6b and later · before 24e00850bcff46b984f4c44b92e5499450fcfb5aaffected · git
    • e6f2f381e4015386a656a369835f949c26000e6b and later · before 835133337c2ce200db56f62d018c79087dee2603affected · git
    • e6f2f381e4015386a656a369835f949c26000e6b and later · before 8861db305103107199b1426f25fde1fb6d465583affected · git
    • before 5.1not affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.190-16.1.190-1
Debian:12linux-6.12before 6.12.113-1~deb12u16.12.113-1~deb12u1
Debian:13linuxbefore 6.12.113-16.12.113-1
Debian:14linuxbefore 7.2.8-17.2.8-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-74705udp: fix potential use-after-free in tunnel segmentation
    40Plan
  • CVE-2026-74612veth: fix skb length accounting after XDP frag adjustment
    40Plan
  • CVE-2026-74475vxlan: use neigh_ha_snapshot() in route_shortcircuit()
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2026-98411Oct 14, 2026 · power: sequencing: fix NULL-pointer dereference in pwrseq_device_register()
    0Monitor
  • ← EarlierCVE-2026-98412Oct 14, 2026 · power: sequencing: fix NULL-pointer dereference in pwrseq_unit_new()
    0Monitor
  • Later →CVE-2026-98414Oct 14, 2026 · memcg: avoid charging the root memcg from obj_cgroup_charge_pages()
    0Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux24e00850bcff46b984f4c44b92e5499450fcfb5aVendor (CNA)
Linux Linux5a6f9a872b4ff68877caf998bee352153b7154bcVendor (CNA)
Linux Linux835133337c2ce200db56f62d018c79087dee2603Vendor (CNA)
Linux Linux8861db305103107199b1426f25fde1fb6d465583Vendor (CNA)
Linux Linuxc781e737aa0de95289b1774d5fd29388895737a9Vendor (CNA)
Linux Linuxe308c5acfe283a66627fc407065626df4ab753ecVendor (CNA)
Linux Linuxe77461af13eab5c9a953cc52ec8432cc941d61e2Vendor (CNA)
Linux Linuxf9da796fa238f8e4414ee8481e6c979759a3d563Vendor (CNA)
azl3 kernel 6.6.157.1-1 on Azure Linux 3.06.6.159.1-1 · Release NotesMicrosoft (MSRC)
debian:linux6.1.190-1 · Debian:12Package registry (OSV)
debian:linux6.12.113-1 · Debian:13Package registry (OSV)
debian:linux7.2.8-1 · Debian:14Package registry (OSV)
debian:linux-6.126.12.113-1~deb12u1 · Debian:12Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

  1. Published
  2. Fix recordedsame day
  3. TodayNov 5, 2026+22 d
EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

Technical details

No CVSS vector for this record, so attack conditions can't be derived.

Weakness class (CWE)

—

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Exploit maturity— → none
  2. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (7 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records