SB20260816299 - Integer overflow in Linux kernel batman-adv
Published: August 16, 2026
Security Bulletin ID
SB20260816299
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Integer overflow (CVE-ID: CVE-2026-72226)
CWE-ID: CWE-190 - Integer overflow
CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to cause an out-of-bounds read.
The vulnerability exists due to an integer overflow in the batadv_tt_tvlv_unicast_handler_v1 function when processing a TT unicast TVLV containing a crafted number of VLAN entries. A remote attacker can send a specially crafted TVLV message to cause an out-of-bounds read.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/0de12a4c4847f571d82a9cd96bc633eded41d7c6
- https://git.kernel.org/stable/c/1898273c5dc8148267ef9f97cd2517a2822350e7
- https://git.kernel.org/stable/c/3256c05d5a9db34346eaf20f52dddde984852d77
- https://git.kernel.org/stable/c/604bd5042fbcd1ab9f7cd98fd847ec017aeede8a
- https://git.kernel.org/stable/c/6222b443686525cb5a9b6a9cecf23b2e2ab23e2a
- https://git.kernel.org/stable/c/7319c0794f91be2734aac695794e7203606b49f8
- https://git.kernel.org/stable/c/7a581d9aaba8c82bd6177fa36b2588eea77f6e2b
- https://git.kernel.org/stable/c/d6ff4764ff784ede25f5c83a6f5883a74c93a5ea