CVE-2026-23388

HIGH EPSS 2.1%
Published Mar 25, 20263mo ago · Modified Jun 17, 20261w ago
7.1 CVSS 3.1
High
Find Similar
Published Mar 25, 2026 3mo ago
Last Modified Jun 17, 2026 1w ago

Description

In the Linux kernel, the following vulnerability has been resolved: Squashfs: check metadata block offset is within range Syzkaller reports a "general protection fault in squashfs_copy_data" This is ultimately caused by a corrupted index look-up table, which produces a negative metadata block offset. This is subsequently passed to squashfs_copy_data (via squashfs_read_metadata) where the negative offset causes an out of bounds access. The fix is to check that the offset is within range in squashfs_read_metadata. This will trap this and other cases.

CVSS Details

Base Score
7.1
Exploitability
1.8
Impact
5.2
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
2.1% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-125 Out-of-bounds Read Memory Safety

Affected Products 15

VendorProductVersionRange
linuxlinux_kernel*≥2.6.29.1  –  <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  –  <6.12.77
linuxlinux_kernel*≥6.13  –  <6.18.17
linuxlinux_kernel*≥6.19  –  <6.19.7
linuxlinux_kernel2.6.29any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any

References 8

  • git.kernel.org https://git.kernel.org/stable/c/01ee0bcc29864b78249308e8b35042b09bbf5fe3
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/0c8ab092aec3ac4294940054772d30b511b16713
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/3b9499e7d677dd4366239a292238489a804936b2
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/3f68a9457a6190814377577374da75f872e0a013
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/60f679f643f3f36a8571ea585e4ce5d93ef952b5
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6b847d65f5b0065e02080c61fad93d57d6686383
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/9e9fa5ad37c9cbad73c165c7ff1e76e650825e7c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/fdb24a820a5832ec4532273282cbd4f22c291a0d
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/01ee0bcc29864b78249308e8b35042b09bbf5fe3
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/0c8ab092aec3ac4294940054772d30b511b16713
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/3b9499e7d677dd4366239a292238489a804936b2
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/3f68a9457a6190814377577374da75f872e0a013
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/60f679f643f3f36a8571ea585e4ce5d93ef952b5
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6b847d65f5b0065e02080c61fad93d57d6686383
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/9e9fa5ad37c9cbad73c165c7ff1e76e650825e7c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/fdb24a820a5832ec4532273282cbd4f22c291a0d
    Patch