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CVE-2024-46761

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: pci/hotplug/pnv_php: Fix hotplug driver crash on Powernv The hotplug driver for powerpc (pci/hotplug/pnv_php.c) causes a kernel…

Published Sep 18, 2024CWE-476EPSS 0.25%

Overview

CVE-2024-46761 is a medium-severity vulnerability. It was published on September 18, 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:

pci/hotplug/pnv_php: Fix hotplug driver crash on Powernv

The hotplug driver for powerpc (pci/hotplug/pnv_php.c) causes a kernel

crash when we try to hot-unplug/disable the PCIe switch/bridge from

the PHB.

The crash occurs because although the MSI data structure has been

released during disable/hot-unplug path and it has been assigned

with NULL, still during unregistration the code was again trying to

explicitly disable the MSI which causes the NULL pointer dereference and

kernel crash.

The patch fixes the check during unregistration path to prevent invoking

pci_disable_msi/msix() since its data structure is already freed.

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/335e35b748527f0c06ded9eebb65387f60647fdaRefgit.kernel.org/stable/c/438d522227374042b5c8798f8ce83bbe479dca4dRefgit.kernel.org/stable/c/4eb4085c1346d19d4a05c55246eb93e74e671048Refgit.kernel.org/stable/c/b82d4d5c736f4fd2ed224c35f554f50d1953d21eRefgit.kernel.org/stable/c/bc1faed19db95abf0933b104910a3fb01b138f59Refgit.kernel.org/stable/c/bfc44075b19740d372f989f21dd03168bfda0689Refgit.kernel.org/stable/c/c0d8094dc740cfacf3775bbc6a1c4720459e8de4Refgit.kernel.org/stable/c/c4c681999d385e28f84808bbf3a85ea8e982da55Reflists.debian.org/debian-lts-announce/2025/01/msg00001.html

How CyberStrike helps

Frequently asked questions

What is CVE-2024-46761?

CVE-2024-46761 is a medium-severity vulnerability. It was published on September 18, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2024-46761?

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-2024-46761?

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-2024-46761?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-46761 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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