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CVE-2024-46690

9.8 · CRITICAL

In the Linux kernel, the following vulnerability has been resolved: nfsd: fix nfsd4_deleg_getattr_conflict in presence of third party lease It is not safe to dereference fl->c.flc_owner without f…

Published Sep 13, 2024EPSS 0.40%

Overview

CVE-2024-46690 is a critical-severity vulnerability. It was published on September 13, 2024 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

In the Linux kernel, the following vulnerability has been resolved:

nfsd: fix nfsd4_deleg_getattr_conflict in presence of third party lease

It is not safe to dereference fl->c.flc_owner without first confirming

fl->fl_lmops is the expected manager. nfsd4_deleg_getattr_conflict()

tests fl_lmops but largely ignores the result and assumes that flc_owner

is an nfs4_delegation anyway. This is wrong.

With this patch we restore the "!= &nfsd_lease_mng_ops" case to behave

as it did before the change mentioned below. This is the same as the

current code, but without any reference to a possible delegation.

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/1b46a871e980e3daa16fd5e77539966492e8910aRefgit.kernel.org/stable/c/40927f3d0972bf86357a32a5749be71a551241b6

How CyberStrike helps

Frequently asked questions

What is CVE-2024-46690?

CVE-2024-46690 is a critical-severity vulnerability. It was published on September 13, 2024 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2024-46690?

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2024-46690?

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-2024-46690?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-46690 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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