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CVE-2026-53032

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix NULL deref in map_kptr_match_type for scalar regs Commit ab6c637ad027 ("bpf: Fix a bpf_kptr_xchg() issue with local kp…

Published Jun 24, 2026CWE-476EPSS 0.12%

Overview

CVE-2026-53032 is a medium-severity vulnerability. It was published on June 24, 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:

bpf: Fix NULL deref in map_kptr_match_type for scalar regs

Commit ab6c637ad027 ("bpf: Fix a bpf_kptr_xchg() issue with local

kptr") refactored map_kptr_match_type() to branch on btf_is_kernel()

before checking base_type(). A scalar register stored into a kptr

slot has no btf, so the btf_is_kernel(reg->btf) call dereferences

NULL.

Move the base_type() != PTR_TO_BTF_ID guard before any reg->btf

access.

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/0a36c1f72888bca0237295a4da19cd91821a90beRefgit.kernel.org/stable/c/4d0a375887ab4d49e4da1ff10f9606cab8f7c3adRefgit.kernel.org/stable/c/520454e839710c327808c2fcc98e28cee77355fcRefgit.kernel.org/stable/c/6982653ce5f119982aa58f1af58e7bfbebf39252Refgit.kernel.org/stable/c/da1d615ce49a47986a8864e2371a26e97861085c

How CyberStrike helps

Frequently asked questions

What is CVE-2026-53032?

CVE-2026-53032 is a medium-severity vulnerability. It was published on June 24, 2026 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2026-53032?

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-2026-53032?

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-2026-53032?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-53032 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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