CVE-2026-64090
Published Jul 19, 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.
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EPSS — Exploit Prediction
0.0018
Probability of exploitation
0.08%
Percentile rank
EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.
References
Other 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
Frequently Asked Questions
What is CVE-2026-64090? +
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.
How do I check if I'm vulnerable to CVE-2026-64090? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.