SB20260824224 - Out-of-bounds read in Linux kernel net driver

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Main Vulnerability Database SB20260824224

SB20260824224 - Out-of-bounds read in Linux kernel net driver

Published: August 24, 2026

Security Bulletin ID SB20260824224
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Information disclosure

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Out-of-bounds read (CVE-ID: CVE-2026-74612)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]


The vulnerability allows a local user to disclose sensitive information to userspace.

The vulnerability exists due to an out-of-bounds read in veth_xdp_rcv_skb() when processing an skb after XDP fragment area adjustment. A local user can run an XDP program that shrinks the fragment area to disclose sensitive information to userspace.

The issue can expose skb metadata including fragment state and a kernel pointer, and was observed on the UDP receive path.


Remediation

Install update from vendor's website.

References