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CVE-2026-89799

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: bpf: Disable preemption in bpf_get_stackid The get_perf_callchain call needs disabled preemption plus we need it disabled as lo…

Published Sep 16, 2026EPSS 0.18%

Overview

CVE-2026-89799 is a high-severity vulnerability. It was published on September 16, 2026 and has a CVSS 3.1 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.8, 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: Disable preemption in bpf_get_stackid

The get_perf_callchain call needs disabled preemption plus we need

it disabled as long as we access its returned trace entries buffer.

Note the bpf_get_stackid_pe function is executed already with

preemption disabled.

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/01fc93f670b3e759413a4d574c18ccfc636d2728Refgit.kernel.org/stable/c/15f1bd8574662f1b7b26aaa2e23ebf4066f0117dRefgit.kernel.org/stable/c/18c71e4b65ee60b8611fc071bdd7159f10185117Refgit.kernel.org/stable/c/c4efdc1d4cb3e9183e41a1b2a5e0901dbbb31cdfRefgit.kernel.org/stable/c/ccf481d73bce6e851cec364fe831c86fe66877cfRefgit.kernel.org/stable/c/e79a70c2e97ae36bbdd371f0ce88a525f7b49f01

How CyberStrike helps

Frequently asked questions

What is CVE-2026-89799?

CVE-2026-89799 is a high-severity vulnerability. It was published on September 16, 2026 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2026-89799?

This vulnerability has a CVSS 3.1 base score of 7.8, 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-2026-89799?

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-2026-89799?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-89799 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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