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CVE-2021-46949

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: sfc: farch: fix TX queue lookup in TX flush done handling We're starting from a TXQ instance number ('qid'), not a TXQ type, so…

Published Feb 27, 2024CWE-476EPSS 0.22%

Overview

CVE-2021-46949 is a medium-severity vulnerability. It was published on February 27, 2024 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:

sfc: farch: fix TX queue lookup in TX flush done handling

We're starting from a TXQ instance number ('qid'), not a TXQ type, so

efx_get_tx_queue() is inappropriate (and could return NULL, leading

to panics).

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/5b1faa92289b53cad654123ed2bc8e10f6ddd4acRefgit.kernel.org/stable/c/98d91180748986bfb6dfb3e72765f3225719a647Refgit.kernel.org/stable/c/a1570985ec04116cc665b760faf666a104154170Refgit.kernel.org/stable/c/fb791572d6747ef385f628450f8d57cd132e6e5aRefgit.kernel.org/stable/c/5b1faa92289b53cad654123ed2bc8e10f6ddd4acRefgit.kernel.org/stable/c/98d91180748986bfb6dfb3e72765f3225719a647Refgit.kernel.org/stable/c/a1570985ec04116cc665b760faf666a104154170Refgit.kernel.org/stable/c/fb791572d6747ef385f628450f8d57cd132e6e5a

How CyberStrike helps

Frequently asked questions

What is CVE-2021-46949?

CVE-2021-46949 is a medium-severity vulnerability. It was published on February 27, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2021-46949?

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-2021-46949?

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-2021-46949?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-46949 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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