Linux Kernel up to 6.10.9 Powernv pci/hotplug/pnv_php null pointer dereference

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CTI Interest Score
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5.5$0-$5k0.00

Summaryinfo

A vulnerability identified as critical has been detected in Linux Kernel up to 6.10.9. This affects an unknown function of the file pci/hotplug/pnv_php of the component Powernv. Performing a manipulation results in null pointer dereference. This vulnerability was named CVE-2024-46761. There is no available exploit. You should upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, was found in Linux Kernel up to 6.10.9. This affects some unknown functionality of the file pci/hotplug/pnv_php of the component Powernv. The manipulation with an unknown input leads to a null pointer dereference vulnerability. CWE is classifying the issue as CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. This is going to have an impact on availability. The summary by CVE is:

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.

It is possible to read the advisory at git.kernel.org. This vulnerability is uniquely identified as CVE-2024-46761 since 09/11/2024. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 208099 (Debian dsa-5782 : affs-modules-6.1.0-21-4kc-malta-di - security update), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 4.19.322, 5.4.284, 5.10.226, 5.15.167, 6.1.110, 6.6.51 or 6.10.10 eliminates this vulnerability. Applying the patch 4eb4085c1346/c4c681999d38/bc1faed19db9/c0d8094dc740/438d52222737/b82d4d5c736f/bfc44075b197/335e35b74852 is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at Tenable (208099) and CERT Bund (WID-SEC-2024-2173). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Affected

  • Debian Linux
  • Google Cloud Platform
  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • Ubuntu Linux
  • SUSE Linux
  • IBM InfoSphere Guardium
  • Oracle Linux
  • RESF Rocky Linux
  • Open Source Linux Kernel
  • SolarWinds Security Event Manager

Productinfo

Type

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Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.6
VulDB Meta Temp Score: 5.5

VulDB Base Score: 5.7
VulDB Temp Score: 5.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 208099
Nessus Name: Debian dsa-5782 : affs-modules-6.1.0-21-4kc-malta-di - security update

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 4.19.322/5.4.284/5.10.226/5.15.167/6.1.110/6.6.51/6.10.10
Patch: 4eb4085c1346/c4c681999d38/bc1faed19db9/c0d8094dc740/438d52222737/b82d4d5c736f/bfc44075b197/335e35b74852

Timelineinfo

09/11/2024 🔍
09/18/2024 +7 days 🔍
09/18/2024 +0 days 🔍
04/06/2026 +564 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2024-46761 (🔍)
GCVE (CVE): GCVE-0-2024-46761
GCVE (VulDB): GCVE-100-277923
CERT Bund: WID-SEC-2024-2173 - Linux Kernel: Mehrere Schwachstellen

Entryinfo

Created: 09/18/2024 10:55
Updated: 04/06/2026 01:14
Changes: 09/18/2024 10:55 (59), 09/21/2024 12:45 (1), 09/23/2024 18:16 (10), 10/05/2024 22:36 (2), 04/06/2026 01:14 (7)
Complete: 🔍
Cache ID: 216::103

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