CVE-2024-41021

MEDIUM EPSS 12.7%
Published Jul 29, 20241y ago · Modified Jun 17, 20262w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Jul 29, 2024 1y ago
Last Modified Jun 17, 2026 2w ago

Description

In the Linux kernel, the following vulnerability has been resolved: s390/mm: Fix VM_FAULT_HWPOISON handling in do_exception() There is no support for HWPOISON, MEMORY_FAILURE, or ARCH_HAS_COPY_MC on s390. Therefore we do not expect to see VM_FAULT_HWPOISON in do_exception(). However, since commit af19487f00f3 ("mm: make PTE_MARKER_SWAPIN_ERROR more general"), it is possible to see VM_FAULT_HWPOISON in combination with PTE_MARKER_POISONED, even on architectures that do not support HWPOISON otherwise. In this case, we will end up on the BUG() in do_exception(). Fix this by treating VM_FAULT_HWPOISON the same as VM_FAULT_SIGBUS, similar to x86 when MEMORY_FAILURE is not configured. Also print unexpected fault flags, for easier debugging. Note that VM_FAULT_HWPOISON_LARGE is not expected, because s390 cannot support swap entries on other levels than PTE level.

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
12.7% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-401

Affected Products 3

VendorProductVersionRange
linuxlinux_kernel*≥6.6  –  <6.6.44
linuxlinux_kernel*≥6.7  –  <6.9.12
linuxlinux_kernel*≥6.10  –  <6.10.2

References 4

  • git.kernel.org https://git.kernel.org/stable/c/73a9260b7366d2906ec011e100319359fe2277d0
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/9e13767ccefdc4f8aa92514b592b60f6b54882ff
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a3aefb871222a9880602d1a44a558177b4143e3b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/df39038cd89525d465c2c8827eb64116873f141a
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/73a9260b7366d2906ec011e100319359fe2277d0
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/9e13767ccefdc4f8aa92514b592b60f6b54882ff
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a3aefb871222a9880602d1a44a558177b4143e3b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/df39038cd89525d465c2c8827eb64116873f141a
    Patch