CVE-2026-45848 | apparmor: fix NULL sock in aa_sock_file_perm

In the Linux kernel, the following vulnerability has been resolved: apparmor: fix NULL sock in aa_sock_file_perm Deal with the potential that sock and sock-sk can be NULL during socket setup or teardown. This could lead to an oops. The fix for NULL pointer dereference in __unix_needs_revalidation shows this is at least possible for af_unix sockets. While the fix for af_unix sockets applies for newer mediation this is still the fall back path for older af_unix mediation and other sockets, so ensure it is covered.

Published: 2026-05-27 Last update: 2026-05-27 Assigner: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67

Conclusion & alert: CVE-2026-45848 is rated Low Risk (11.4/100): low exploitation likelihood (EPSS 0.21%). Mandatory action: Low composite risk—no urgent action required; patch on your normal maintenance cycle and revisit priority if CVSS or EPSS increases.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2026-45848

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.02% 0.21% +0.19%
2 2026-05-28 0.02%

Full EPSS history (2 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2026-45848

CVSS metrics for this CVE.

No CVSS data in dataset for this CVE.

Weakness enumeration for CVE-2026-45848

GitHub Security Advisory for CVE-2026-45848

GHSA-8jqg-g4wj-938g · Severity: unknown — In the Linux kernel, the following vulnerability has been resolved: apparmor: fix NULL sock in...

OS Trackers for CVE-2026-45848

vendor priority summary link
debian not yet assigned CVE-2026-45848 not yet assigned priority: Debian including 1 source packages (linux), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2026-45848
redhat https://access.redhat.com/security/cve/CVE-2026-45848
suse https://www.suse.com/security/cve/CVE-2026-45848/
ubuntu medium CVE-2026-45848 medium priority: Ubuntu including 158 source packages (linux, linux-allwinner-5.19, …), 1422 status rows across 9 suites (bionic, focal, jammy, noble, questing, resolute, trusty, upstream, xenial): DNE 1024, ignored 169, needed 93, released 84, not-affected 33, pending 18, needs-triage 1. https://ubuntu.com/security/CVE-2026-45848

Affected software / configurations for CVE-2026-45848

Vendor Product Version Raw CPE
No affected products in dataset.

References for CVE-2026-45848

cvelogic Threat Intelligence