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CVE-2026-92518

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: riscv, bpf: Fix kernel stack corruption in tailcall with CFI When CONFIG_CFI_CLANG is enabled, prog->bpf_func already skips the…

Published Sep 17, 2026EPSS 0.17%

Overview

CVE-2026-92518 is a high-severity vulnerability. It was published on September 17, 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:

riscv, bpf: Fix kernel stack corruption in tailcall with CFI

When CONFIG_CFI_CLANG is enabled, prog->bpf_func already skips the kcfi

instruction during setup. Including it again in the tailcall jump offset

causes it to jump over an extra 4 bytes, skipping the stack pointer

adjustment, which will result in kernel stack corruption.

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/34b1bb33a025787e05f966e74de18cd36276f801Refgit.kernel.org/stable/c/52fb1756ea1d2759dfef2d86245be00b05dac3a2Refgit.kernel.org/stable/c/a6e11a81da3420fd37f1518d4f238c4d5784086e

How CyberStrike helps

Frequently asked questions

What is CVE-2026-92518?

CVE-2026-92518 is a high-severity vulnerability. It was published on September 17, 2026 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2026-92518?

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-2026-92518?

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-2026-92518?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-92518 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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