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CVE-2024-46762

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: xen: privcmd: Fix possible access to a freed kirqfd instance Nothing prevents simultaneous ioctl calls to privcmd_irqfd_assign(…

Published Sep 18, 2024CWE-416EPSS 0.24%

Overview

CVE-2024-46762 is a high-severity vulnerability. It was published on September 18, 2024 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:

xen: privcmd: Fix possible access to a freed kirqfd instance

Nothing prevents simultaneous ioctl calls to privcmd_irqfd_assign() and

privcmd_irqfd_deassign(). If that happens, it is possible that a kirqfd

created and added to the irqfds_list by privcmd_irqfd_assign() may get

removed by another thread executing privcmd_irqfd_deassign(), while the

former is still using it after dropping the locks.

This can lead to a situation where an already freed kirqfd instance may

be accessed and cause kernel oops.

Use SRCU locking to prevent the same, as is done for the KVM

implementation for irqfds.

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/112fd2f02b308564724b8e81006c254d20945c4bRefgit.kernel.org/stable/c/611ff1b1ae989a7bcce3e2a8e132ee30e968c557Refgit.kernel.org/stable/c/e997b357b13a7d95de31681fc54fcc34235fa527

How CyberStrike helps

Frequently asked questions

What is CVE-2024-46762?

CVE-2024-46762 is a high-severity vulnerability. It was published on September 18, 2024 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2024-46762?

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-2024-46762?

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-2024-46762?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-46762 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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