SB20260815223 - Integer overflow in Linux kernel core

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Main Vulnerability Database SB20260815223

SB20260815223 - Integer overflow in Linux kernel core

Published: August 15, 2026

Security Bulletin ID SB20260815223
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Denial of service

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Integer overflow (CVE-ID: CVE-2026-74256)

CWE-ID: CWE-190 - Integer overflow

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to integer overflow in bpf_msg_pop_data() in the sockmap BPF message handling code when processing crafted start and len values. A local user can supply out-of-range values to trigger an out-of-bounds pop operation and cause a denial of service.

Exploitation can cause the pop loop to run past the end of the scatterlist and reach an invalid put_page() on an empty slot.


Remediation

Install update from vendor's website.

References