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CVE

CVE-2026-72226

batman-adv: tt: prevent TVLV OOB check overflow
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CVE

CVE-2026-72226

batman-adv: tt: prevent TVLV OOB check overflow

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

batadvtvlvttvlandata (8 bytes). The size can therefore overflow the u16

used to store the ttvlanlen. 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.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
9.8
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
C
H
U
0
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
C
H
U
-

Related Resources

No items found.

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, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72226.json, https://nvd.nist.gov/vuln/detail/CVE-2026-72226, https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Severity

9.8

CVSS Score
0
10

Basic Information

Base CVSS
9.8
EPSS Probability
0.00704%
EPSS Percentile
0.50638%
Introduced Version
7ea7b4a142758deaf46c1af0ca9ceca6dd55138b,3.13.0,5.11.0,5.16.0,6.2.0,6.7.0,6.13.0,6.19.0,0
Fix Available
7a581d9aaba8c82bd6177fa36b2588eea77f6e2b,5.10.261,5.15.212,6.1.178,6.6.145,6.12.97,6.18.40,7.1.5,6.1.180-1,5.10.262-1,6.12.100-1

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