by Kastro CVE-2026-72226
Linux Linux — batman-adv: tt: prevent TVLV OOB check overflow
Description · from the CVE record
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
ProductAffectedFixed inSource
Linux7ea7b4a142758deaf46c1af0ca9ceca6dd55138b – < 0de12a4c4847f571d82a9cd96bc633eded41d7c60de12a4c4847f571d82a9cd96bc633eded41d7c6CNA
Linux7ea7b4a142758deaf46c1af0ca9ceca6dd55138b – < d6ff4764ff784ede25f5c83a6f5883a74c93a5ead6ff4764ff784ede25f5c83a6f5883a74c93a5eaCNA
Linux7ea7b4a142758deaf46c1af0ca9ceca6dd55138b – < 1898273c5dc8148267ef9f97cd2517a2822350e71898273c5dc8148267ef9f97cd2517a2822350e7CNA
Linux7ea7b4a142758deaf46c1af0ca9ceca6dd55138b – < 604bd5042fbcd1ab9f7cd98fd847ec017aeede8a604bd5042fbcd1ab9f7cd98fd847ec017aeede8aCNA
Linux7ea7b4a142758deaf46c1af0ca9ceca6dd55138b – < 7319c0794f91be2734aac695794e7203606b49f87319c0794f91be2734aac695794e7203606b49f8CNA
Linux7ea7b4a142758deaf46c1af0ca9ceca6dd55138b – < 3256c05d5a9db34346eaf20f52dddde984852d773256c05d5a9db34346eaf20f52dddde984852d77CNA
Linux7ea7b4a142758deaf46c1af0ca9ceca6dd55138b – < 6222b443686525cb5a9b6a9cecf23b2e2ab23e2a6222b443686525cb5a9b6a9cecf23b2e2ab23e2aCNA
Linux7ea7b4a142758deaf46c1af0ca9ceca6dd55138b – < 7a581d9aaba8c82bd6177fa36b2588eea77f6e2b7a581d9aaba8c82bd6177fa36b2588eea77f6e2bCNA
Linux3.13–CNA
Scores by source
Linux (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total