CVE-2024-42230

MEDIUM EPSS 10.5%
Published Jul 30, 20241y ago · Modified Jun 17, 20262w ago
4.4 CVSS 3.1
Medium
Find Similar
Published Jul 30, 2024 1y ago
Last Modified Jun 17, 2026 2w ago

Description

In the Linux kernel, the following vulnerability has been resolved: powerpc/pseries: Fix scv instruction crash with kexec kexec on pseries disables AIL (reloc_on_exc), required for scv instruction support, before other CPUs have been shut down. This means they can execute scv instructions after AIL is disabled, which causes an interrupt at an unexpected entry location that crashes the kernel. Change the kexec sequence to disable AIL after other CPUs have been brought down. As a refresher, the real-mode scv interrupt vector is 0x17000, and the fixed-location head code probably couldn't easily deal with implementing such high addresses so it was just decided not to support that interrupt at all.

CVSS Details

Base Score
4.4
Exploitability
0.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required High
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
10.5% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Affected Products 9

VendorProductVersionRange
linuxlinux_kernel*≥5.9  –  <6.1.98
linuxlinux_kernel*≥6.2  –  ≤6.6.39
linuxlinux_kernel*≥6.7  –  <6.9.9
linuxlinux_kernel6.10any
linuxlinux_kernel6.10any
linuxlinux_kernel6.10any
linuxlinux_kernel6.10any
linuxlinux_kernel6.10any
linuxlinux_kernel6.10any

References 5

  • git.kernel.org https://git.kernel.org/stable/c/21a741eb75f80397e5f7d3739e24d7d75e619011
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/8c6506616386ce37e59b2745fc481c6713fae4f3
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c550679d604798d9fed8a5b2bb5693448a25407c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d10e3c39001e9194b9a1bfd6979bd3fa19dccdc5
    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/21a741eb75f80397e5f7d3739e24d7d75e619011
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/8c6506616386ce37e59b2745fc481c6713fae4f3
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c550679d604798d9fed8a5b2bb5693448a25407c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d10e3c39001e9194b9a1bfd6979bd3fa19dccdc5
    Patch