SB2026050287 - Out-of-bounds read in Linux kernel bridge
Published: May 2, 2026
Security Bulletin ID
SB2026050287
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Out-of-bounds read (CVE-ID: CVE-2026-31752)
CWE-ID: CWE-125 - Out-of-bounds read
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to an out-of-bounds read in br_nd_send when parsing malformed neighbor discovery options. A remote attacker can send a specially crafted neighbor solicitation packet to cause a denial of service.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/259466f76f5a2148aff11134e68f4b4c6d52725b
- https://git.kernel.org/stable/c/82a42eceec7c6bdb0e0da94c0542a173b7ea57f2
- https://git.kernel.org/stable/c/837392a38445729c22e03d3abcf33f07763efd85
- https://git.kernel.org/stable/c/850837965af15707fd3142c1cf3c5bfaf022299b
- https://git.kernel.org/stable/c/c49b9256bbacb6a135654aebd12e4c0e87166b7c
- https://git.kernel.org/stable/c/e0bfd6d4dc77ab345b6c65eef0cfe9b2f69085aa
- https://git.kernel.org/stable/c/e71303a9190496136e240c4f2872b7b0b16027a7
- https://git.kernel.org/stable/c/ee02d8991fd7bd86ed6ebd0deb4aab53feb0e43a