CVE-2026-23474

MEDIUM EPSS 3.4%
Published Apr 3, 20262mo ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Apr 3, 2026 2mo ago
Last Modified Jun 17, 2026 1w ago

Description

In the Linux kernel, the following vulnerability has been resolved: mtd: Avoid boot crash in RedBoot partition table parser Given CONFIG_FORTIFY_SOURCE=y and a recent compiler, commit 439a1bcac648 ("fortify: Use __builtin_dynamic_object_size() when available") produces the warning below and an oops. Searching for RedBoot partition table in 50000000.flash at offset 0x7e0000 ------------[ cut here ]------------ WARNING: lib/string_helpers.c:1035 at 0xc029e04c, CPU#0: swapper/0/1 memcmp: detected buffer overflow: 15 byte read of buffer size 14 Modules linked in: CPU: 0 UID: 0 PID: 1 Comm: swapper/0 Not tainted 6.19.0 #1 NONE As Kees said, "'names' is pointing to the final 'namelen' many bytes of the allocation ... 'namelen' could be basically any length at all. This fortify warning looks legit to me -- this code used to be reading beyond the end of the allocation." Since the size of the dynamic allocation is calculated with strlen() we can use strcmp() instead of memcmp() and remain within bounds.

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
3.4% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Affected Products 16

VendorProductVersionRange
linuxlinux_kernel*≥2.6.12.1  –  <5.10.253
linuxlinux_kernel*≥5.11  –  <5.15.203
linuxlinux_kernel*≥5.16  –  <6.1.167
linuxlinux_kernel*≥6.2  –  <6.6.130
linuxlinux_kernel*≥6.7  –  <6.12.78
linuxlinux_kernel*≥6.13  –  <6.18.20
linuxlinux_kernel*≥6.19  –  <6.19.10
linuxlinux_kernel2.6.12any
linuxlinux_kernel2.6.12any
linuxlinux_kernel2.6.12any
linuxlinux_kernel2.6.12any
linuxlinux_kernel2.6.12any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any

References 8

  • git.kernel.org https://git.kernel.org/stable/c/0b08be5aca212a99f8ba786fee4922feac08002c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/2025b2d1f9d5cad6ea6fe85654c6c41297c3130b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/75a4d8cfe7784f909b3bd69325abac8e04ecb385
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/8e2f8020270af7777d49c2e7132260983e4fc566
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c4054ad2d8bff4e8e937cd4a1d1a04c1e8f77a2c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ca235d11fc2fd8fce1dcd9d732dc780be0cde2de
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d8570211a2b1ec886a462daa0be4e9983ac768bb
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e0065e106f798ce6862251bc4fc030ac5cead940
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/0b08be5aca212a99f8ba786fee4922feac08002c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/2025b2d1f9d5cad6ea6fe85654c6c41297c3130b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/75a4d8cfe7784f909b3bd69325abac8e04ecb385
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/8e2f8020270af7777d49c2e7132260983e4fc566
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c4054ad2d8bff4e8e937cd4a1d1a04c1e8f77a2c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ca235d11fc2fd8fce1dcd9d732dc780be0cde2de
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d8570211a2b1ec886a462daa0be4e9983ac768bb
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e0065e106f798ce6862251bc4fc030ac5cead940
    Patch