CVE-2026-72226

Summary

In the Linux kernel, the following vulnerability has been resolved:

batman-adv: tt: prevent TVLV OOB check overflow

A TT unicast TVLV contains the number of VLANs stored in it. This number is an u16 and gets multiplied by the size of the struct batadv_tvlv_tt_vlan_data (8 bytes). The size can therefore overflow the u16 used to store the tt_vlan_len. All additional safety checks to prevent out-of-bounds access of the TVLV buffer are invalid due to this overflow.

Using size_t prevents this overflow and ensures that the safety checks compare against the actual buffer requirements.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux7ea7b4a142758deaf46c1af0ca9ceca6dd55138b < 0de12a4c4847f571d82a9cd96bc633eded41d7c6affected
LinuxLinux7ea7b4a142758deaf46c1af0ca9ceca6dd55138b < d6ff4764ff784ede25f5c83a6f5883a74c93a5eaaffected
LinuxLinux7ea7b4a142758deaf46c1af0ca9ceca6dd55138b < 1898273c5dc8148267ef9f97cd2517a2822350e7affected
LinuxLinux7ea7b4a142758deaf46c1af0ca9ceca6dd55138b < 604bd5042fbcd1ab9f7cd98fd847ec017aeede8aaffected
LinuxLinux7ea7b4a142758deaf46c1af0ca9ceca6dd55138b < 7319c0794f91be2734aac695794e7203606b49f8affected
LinuxLinux7ea7b4a142758deaf46c1af0ca9ceca6dd55138b < 3256c05d5a9db34346eaf20f52dddde984852d77affected
LinuxLinux7ea7b4a142758deaf46c1af0ca9ceca6dd55138b < 6222b443686525cb5a9b6a9cecf23b2e2ab23e2aaffected
LinuxLinux7ea7b4a142758deaf46c1af0ca9ceca6dd55138b < 7a581d9aaba8c82bd6177fa36b2588eea77f6e2baffected
LinuxLinux3.13affected
LinuxLinux0 < 3.13unaffected
LinuxLinux5.10.261 <= 5.10.*unaffected
LinuxLinux5.15.212 <= 5.15.*unaffected
LinuxLinux6.1.178 <= 6.1.*unaffected
LinuxLinux6.6.145 <= 6.6.*unaffected
LinuxLinux6.12.97 <= 6.12.*unaffected
LinuxLinux6.18.40 <= 6.18.*unaffected
LinuxLinux7.1.5 <= 7.1.*unaffected
LinuxLinux7.2 <= *unaffected

Weaknesses

References