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CVE-2026-93112

7.1 · HIGH

In the Linux kernel, the following vulnerability has been resolved: bpf: Require a BPF cpumask for bpf_cpumask_populate() bpf_cpumask_populate() writes to its destination with bitmap_copy(), but…

Published Sep 17, 2026EPSS 0.17%

Overview

CVE-2026-93112 is a high-severity vulnerability. It was published on September 17, 2026 and has a CVSS 3.1 base score of 7.1 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.1, rated HIGH. 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: Require a BPF cpumask for bpf_cpumask_populate()

bpf_cpumask_populate() writes to its destination with bitmap_copy(), but

the destination is typed as struct cpumask *. That allows the verifier to

accept borrowed cpumask pointers returned by read-only kfuncs, such as

scx_bpf_get_online_cpumask(), as a writable destination.

Make the destination a struct bpf_cpumask * so populate follows the same

ownership rule as the other mutating cpumask kfuncs. Query kfuncs continue

to accept const struct cpumask * inputs.

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/0cfc9348a045da64955af2dd6902e66dfc7d6469Refgit.kernel.org/stable/c/8740156ad33be5071b588b594c55f279457f667cRefgit.kernel.org/stable/c/b7e2a5c6519adc73be55c3de2cb545e095a0fbc5

How CyberStrike helps

Frequently asked questions

What is CVE-2026-93112?

CVE-2026-93112 is a high-severity vulnerability. It was published on September 17, 2026 and has a CVSS 3.1 base score of 7.1 (HIGH).

How severe is CVE-2026-93112?

This vulnerability has a CVSS 3.1 base score of 7.1, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-93112?

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-2026-93112?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-93112 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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