CVE-2026-43171

MEDIUM EPSS 2.4%
Published May 6, 20261mo ago · Modified Jun 17, 20262w ago
5.5 CVSS 3.1
Medium
Find Similar
Published May 6, 2026 1mo ago
Last Modified Jun 17, 2026 2w ago

Description

In the Linux kernel, the following vulnerability has been resolved: EFI/CPER: don't dump the entire memory region The current logic at cper_print_fw_err() doesn't check if the error record length is big enough to handle offset. On a bad firmware, if the ofset is above the actual record, length -= offset will underflow, making it dump the entire memory. The end result can be: - the logic taking a lot of time dumping large regions of memory; - data disclosure due to the memory dumps; - an OOPS, if it tries to dump an unmapped memory region. Fix it by checking if the section length is too small before doing a hex dump. [ rjw: Subject tweaks ]

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
2.4% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-191

Affected Products 9

VendorProductVersionRange
linuxlinux_kernel*>5.7  –  <5.10.252
linuxlinux_kernel*≥5.11  –  <5.15.202
linuxlinux_kernel*≥5.16  –  <6.1.165
linuxlinux_kernel*≥6.2  –  <6.6.128
linuxlinux_kernel*≥6.7  –  <6.12.75
linuxlinux_kernel*≥6.13  –  <6.18.16
linuxlinux_kernel*≥6.19  –  <6.19.6
linuxlinux_kernel5.7any
linuxlinux_kernel5.7any

References 8

  • git.kernel.org https://git.kernel.org/stable/c/02de64ab54b4bb0f1b21bb324aeff3b08612be33
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/0e09b522f2622841389c3b2f9ac4969e35c0809d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/54e131db4cdffd946db890ff33ff2647053fd4f6
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/55cc6fe5716f678f06bcb95140882dfa684464ec
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/5a9b1dda8481b82851a655c3bcc5b44879b95334
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/64ae5aaa7ac93c83da456039e8ec747bfa8a7cff
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/7780c0bad2a3a70a8c0113a33c02f4151d901eb3
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a8419f5f2c5f2d80848ddabb2b95cf0da84a5f91
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/02de64ab54b4bb0f1b21bb324aeff3b08612be33
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/0e09b522f2622841389c3b2f9ac4969e35c0809d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/54e131db4cdffd946db890ff33ff2647053fd4f6
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/55cc6fe5716f678f06bcb95140882dfa684464ec
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/5a9b1dda8481b82851a655c3bcc5b44879b95334
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/64ae5aaa7ac93c83da456039e8ec747bfa8a7cff
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/7780c0bad2a3a70a8c0113a33c02f4151d901eb3
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a8419f5f2c5f2d80848ddabb2b95cf0da84a5f91
    Patch