CVE-2024-46761

MEDIUM EPSS 16.3%
Published Sep 18, 20241y ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Sep 18, 2024 1y ago
Last Modified Jun 17, 2026 1w ago

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.

CVSS Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
16.3% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-476 NULL Pointer Dereference Memory Safety

Affected Products 7

VendorProductVersionRange
linuxlinux_kernel* <4.19.322
linuxlinux_kernel*≥4.20  –  <5.4.284
linuxlinux_kernel*≥5.5  –  <5.10.226
linuxlinux_kernel*≥5.11  –  <5.15.167
linuxlinux_kernel*≥5.16  –  <6.1.110
linuxlinux_kernel*≥6.2  –  <6.6.51
linuxlinux_kernel*≥6.7  –  <6.10.10

References 9

  • git.kernel.org https://git.kernel.org/stable/c/335e35b748527f0c06ded9eebb65387f60647fda
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/438d522227374042b5c8798f8ce83bbe479dca4d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/4eb4085c1346d19d4a05c55246eb93e74e671048
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/b82d4d5c736f4fd2ed224c35f554f50d1953d21e
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/bc1faed19db95abf0933b104910a3fb01b138f59
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/bfc44075b19740d372f989f21dd03168bfda0689
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c0d8094dc740cfacf3775bbc6a1c4720459e8de4
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c4c681999d385e28f84808bbf3a85ea8e982da55
    Patch
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html

Remediation

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