CVE-2026-64090
Published: July 22, 2026Last modified: July 22, 2026
Description
In the Linux kernel, the following vulnerability has been resolved: batman-adv: tt: avoid empty VLAN responses The commit 16116dac2339 ("batman-adv: prevent TT request storms by not sending inconsistent TT TLVLs") added checks to the local (direct) TT response code. But the response can also be done indirectly by another node using the global TT state. To avoid such inconsistency states reported in the original fix, also avoid sending empty VLANs for replies from the global TT state.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 5.5 |
| Attack Vector | LOCAL |
| Attack complexity | LOW |
| Privileges required | LOW |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | NONE |
| Integrity impact | NONE |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | linux-lts | Fixed (6.1.177-r0) |
| 25 LTS | linux-lts | Fixed (6.12.95-r0) | |
| Stream | linux-lts | Fixed (6.18.35-r1) |
References
- https://git.kernel.org/stable/c/1f467d9a095211d3f77e8ff1bee90e73ffe01c64
- https://git.kernel.org/stable/c/99f17d1cdb371cbd037975239b321f346d38f6d2
- https://git.kernel.org/stable/c/9a02c8fc963ddeecb5d8788be0740c1869fc54b7
- https://git.kernel.org/stable/c/ab26e346322648f5c39de017d9723c9256284fce
- https://git.kernel.org/stable/c/b93ca6012712ecab2b551e120d7c95038d6a89e5
- https://git.kernel.org/stable/c/cfb30645280a2131e46cbd1b9a38cfd3ff893f12
- https://git.kernel.org/stable/c/ea4f757641430bcc8322772e161453c4db5ecb64
- https://git.kernel.org/stable/c/fa1bd704940b5bcbc32c0b28db9167405c8ee5e0