0.0
NA
CVE-2024-46761
IBM Power PCIe MSI NULL Pointer Dereference CentOS Remote Stack Buffer Overwrite
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.

INFO

Published Date :

Sept. 18, 2024, 8:15 a.m.

Last Modified :

Sept. 18, 2024, 8:15 a.m.

Source :

416baaa9-dc9f-4396-8d5f-8c081fb06d67

Remotely Exploitable :

No

Impact Score :

Exploitability Score :

Affected Products

The following products are affected by CVE-2024-46761 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Linux linux_kernel
: Total Affected Vendor : 1 | Products : 1
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2024-46761.

URL Resource
https://git.kernel.org/stable/c/335e35b748527f0c06ded9eebb65387f60647fda
https://git.kernel.org/stable/c/438d522227374042b5c8798f8ce83bbe479dca4d
https://git.kernel.org/stable/c/4eb4085c1346d19d4a05c55246eb93e74e671048
https://git.kernel.org/stable/c/b82d4d5c736f4fd2ed224c35f554f50d1953d21e
https://git.kernel.org/stable/c/bc1faed19db95abf0933b104910a3fb01b138f59
https://git.kernel.org/stable/c/bfc44075b19740d372f989f21dd03168bfda0689
https://git.kernel.org/stable/c/c0d8094dc740cfacf3775bbc6a1c4720459e8de4
https://git.kernel.org/stable/c/c4c681999d385e28f84808bbf3a85ea8e982da55

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2024-46761 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2024-46761 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Sep. 18, 2024

    Action Type Old Value New Value
    Added 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.
    Added Reference kernel.org https://git.kernel.org/stable/c/4eb4085c1346d19d4a05c55246eb93e74e671048 [No types assigned]
    Added Reference kernel.org https://git.kernel.org/stable/c/c4c681999d385e28f84808bbf3a85ea8e982da55 [No types assigned]
    Added Reference kernel.org https://git.kernel.org/stable/c/bc1faed19db95abf0933b104910a3fb01b138f59 [No types assigned]
    Added Reference kernel.org https://git.kernel.org/stable/c/c0d8094dc740cfacf3775bbc6a1c4720459e8de4 [No types assigned]
    Added Reference kernel.org https://git.kernel.org/stable/c/438d522227374042b5c8798f8ce83bbe479dca4d [No types assigned]
    Added Reference kernel.org https://git.kernel.org/stable/c/b82d4d5c736f4fd2ed224c35f554f50d1953d21e [No types assigned]
    Added Reference kernel.org https://git.kernel.org/stable/c/bfc44075b19740d372f989f21dd03168bfda0689 [No types assigned]
    Added Reference kernel.org https://git.kernel.org/stable/c/335e35b748527f0c06ded9eebb65387f60647fda [No types assigned]
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2024-46761 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2024-46761 weaknesses.

NONE - Vulnerability Scoring System
: