CVE-2026-72226

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.

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
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

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-15 06:21

Updated : 2026-08-17 06:18

NVD link : CVE-2026-72226

Mitre link : CVE-2026-72226

CVE.ORG link : CVE-2026-72226

JSON object : View

Products Affected

No product.

CWE

No CWE.

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This number is\nan u16 and gets multiplied by the size of the struct\nbatadv_tvlv_tt_vlan_data (8 bytes). The size can therefore overflow the u16\nused to store the tt_vlan_len. All additional safety checks to prevent\nout-of-bounds access of the TVLV buffer are invalid due to this overflow.\n\nUsing size_t prevents this overflow and ensures that the safety checks\ncompare against the actual buffer requirements."}], "lastModified": "2026-08-17T06:18:23.773", "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}