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CVE-2026-45848

5.5 · MEDIUM

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 t…

Published May 27, 2026CWE-476EPSS 0.16%

Overview

CVE-2026-45848 is a medium-severity vulnerability. It was published on May 27, 2026 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/00b67657535dfea56e84d11492f5c0f61d0af297Refgit.kernel.org/stable/c/0dc19bca22606f7a61d5988408f74e3ae0ef3486Refgit.kernel.org/stable/c/3852eb9a0392eb435c03dcb47d581bcfe6a9a95bRefgit.kernel.org/stable/c/5121b7283f1c46e4c06b88b1dda7b064429d77deRefgit.kernel.org/stable/c/68538ec34fcb4194c7961dc4eca6f5537fec8067Refgit.kernel.org/stable/c/8a0ededbfcff74598f82f1d4b8ef9db28878b317Refgit.kernel.org/stable/c/c11b7c3280d000376e27ebfed17ec7046699eab4Refgit.kernel.org/stable/c/ccb66a3c6c8f51b3ed1bc003b70bb9ff99e8d835

How CyberStrike helps

Frequently asked questions

What is CVE-2026-45848?

CVE-2026-45848 is a medium-severity vulnerability. It was published on May 27, 2026 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2026-45848?

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-45848?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-45848?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-45848 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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