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CVE-2024-35852

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: mlxsw: spectrum_acl_tcam: Fix memory leak when canceling rehash work The rehash delayed work is rescheduled with a delay if the…

Published May 17, 2024CWE-401EPSS 0.26%

Overview

CVE-2024-35852 is a medium-severity vulnerability. It was published on May 17, 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:

mlxsw: spectrum_acl_tcam: Fix memory leak when canceling rehash work

The rehash delayed work is rescheduled with a delay if the number of

credits at end of the work is not negative as supposedly it means that

the migration ended. Otherwise, it is rescheduled immediately.

After "mlxsw: spectrum_acl_tcam: Fix possible use-after-free during

rehash" the above is no longer accurate as a non-negative number of

credits is no longer indicative of the migration being done. It can also

happen if the work encountered an error in which case the migration will

resume the next time the work is scheduled.

The significance of the above is that it is possible for the work to be

pending and associated with hints that were allocated when the migration

started. This leads to the hints being leaked [1] when the work is

canceled while pending as part of ACL region dismantle.

Fix by freeing the hints if hints are associated with a work

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/51cefc9da400b953fee749c9e5d26cd4a2b5d758Refgit.kernel.org/stable/c/5bfe7bf9656ed2633718388f12b7c38b86414a04Refgit.kernel.org/stable/c/63d814d93c5cce4c18284adc810028f28dca493fRefgit.kernel.org/stable/c/857ed800133ffcfcee28582090b63b0cbb8ba59dRefgit.kernel.org/stable/c/d72dd6fcd7886d0523afbab8b4a4b22d17addd7dRefgit.kernel.org/stable/c/de1aaefa75be9d0ec19c9a3e0e2f9696de20c6abRefgit.kernel.org/stable/c/fb4e2b70a7194b209fc7320bbf33b375f7114bd5Refgit.kernel.org/stable/c/51cefc9da400b953fee749c9e5d26cd4a2b5d758Refgit.kernel.org/stable/c/5bfe7bf9656ed2633718388f12b7c38b86414a04Refgit.kernel.org/stable/c/63d814d93c5cce4c18284adc810028f28dca493f

How CyberStrike helps

Frequently asked questions

What is CVE-2024-35852?

CVE-2024-35852 is a medium-severity vulnerability. It was published on May 17, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2024-35852?

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-2024-35852?

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-2024-35852?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-35852 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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