Description
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.
Metrics
CVSS 3.1 9.8/10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HAffected software
Source: the vendor's advisory (CNA). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= 7ea7b4a142758deaf46c1af0ca9ceca6dd55138b, < 0de12a4c4847f571d82a9cd96bc633eded41d7c6; >= 7ea7b4a142758deaf46c1af0ca9ceca6dd55138b, < d6ff4764ff784ede25f5c83a6f5883a74c93a5ea; >= 7ea7b4a142758deaf46c1af0ca9ceca6dd55138b, < 1898273c5dc8148267ef9f97cd2517a2822350e7; >= 7ea7b4a142758deaf46c1af0ca9ceca6dd55138b, < 604bd5042fbcd1ab9f7cd98fd847ec017aeede8a; >= 7ea7b4a142758deaf46c1af0ca9ceca6dd55138b, < 7319c0794f91be2734aac695794e7203606b49f8; >= 7ea7b4a142758deaf46c1af0ca9ceca6dd55138b, < 3256c05d5a9db34346eaf20f52dddde984852d77; >= 7ea7b4a142758deaf46c1af0ca9ceca6dd55138b, < 6222b443686525cb5a9b6a9cecf23b2e2ab23e2a; >= 7ea7b4a142758deaf46c1af0ca9ceca6dd55138b, < 7a581d9aaba8c82bd6177fa36b2588eea77f6e2b |
| Linux | Linux | 3.13 |
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
Timeline
- Published
- Aug 15, 2026
- Last modified
- Oct 16, 2026
- NVD status
- Received