SB20260424192 - Integer overflow in Linux kernel bpf

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Main Vulnerability Database SB20260424192

SB20260424192 - Integer overflow in Linux kernel bpf

Published: April 24, 2026

Security Bulletin ID SB20260424192
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Code execution

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Integer overflow (CVE-ID: CVE-2026-31525)

CWE-ID: CWE-190 - Integer overflow

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a local user to access out-of-bounds map values.

The vulnerability exists due to improper handling of signed integer minimum values in the BPF interpreter's signed 32-bit division and modulo handlers when processing crafted BPF operations that use INT_MIN. A local user can load a crafted BPF program to access out-of-bounds map values.

The issue is caused by a verifier and interpreter mismatch in range tracking for signed 32-bit division and modulo operations.


Remediation

Install update from vendor's website.

References