Answer in brief
CVE-2026-72226 records a Critical severity (CVSS 9.8) vulnerability in batman-adv: tt: prevent TVLV OOB check overflow. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 9.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=7ea7b4a142758deaf46c1af0ca9ceca6dd55138b <0de12a4c4847f571d82a9cd96bc633eded41d7c6 || >=7ea7b4a142758deaf46c1af0ca9ceca6dd55138b <d6ff4764ff784ede25f5c83a6f5883a74c93a5ea || >=7ea7b4a142758deaf46c1af0ca9ceca6dd55138b <1898273c5dc8148267ef9f97cd2517a2822350e7 || >=7ea7b4a142758deaf46c1af0ca9ceca6dd55138b <604bd5042fbcd1ab9f7cd98fd847ec017aeede8a || >=7ea7b4a142758deaf46c1af0ca9ceca6dd55138b <7319c0794f91be2734aac695794e7203606b49f8 || >=7ea7b4a142758deaf46c1af0ca9ceca6dd55138b <3256c05d5a9db34346eaf20f52dddde984852d77 || >=7ea7b4a142758deaf46c1af0ca9ceca6dd55138b <6222b443686525cb5a9b6a9cecf23b2e2ab23e2a || >=7ea7b4a142758deaf46c1af0ca9ceca6dd55138b <7a581d9aaba8c82bd6177fa36b2588eea77f6e2b | 0de12a4c4847f571d82a9cd96bc633eded41d7c6, d6ff4764ff784ede25f5c83a6f5883a74c93a5ea, 1898273c5dc8148267ef9f97cd2517a2822350e7, 604bd5042fbcd1ab9f7cd98fd847ec017aeede8a, 7319c0794f91be2734aac695794e7203606b49f8, 3256c05d5a9db34346eaf20f52dddde984852d77, 6222b443686525cb5a9b6a9cecf23b2e2ab23e2a, 7a581d9aaba8c82bd6177fa36b2588eea77f6e2b |
| Linux/Linuxgeneric | 3.13 | Not reported |
Published upstream
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 15, 2026
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.
Quoted source text, attributed separately from HOL analysis.