Integer overflow in Linux kernel - CVE-2026-72226

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Main Vulnerability Database Vulnerabilities #VU143363

Integer overflow in Linux kernel - CVE-2026-72226

Published: August 16, 2026


Vulnerability identifier: #VU143363
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-72226
CWE-ID: CWE-190
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to cause an out-of-bounds read.

The vulnerability exists due to an integer overflow in the batadv_tt_tvlv_unicast_handler_v1 function when processing a TT unicast TVLV containing a crafted number of VLAN entries. A remote attacker can send a specially crafted TVLV message to cause an out-of-bounds read.


Affected software

Linux kernel
Ubuntu
linux (Ubuntu package)
linux-gcp (Ubuntu package)

How to mitigate CVE-2026-72226

Install security update from vendor's repository.

Linux kernel - update to 7.0 rc3
linux (Ubuntu package) - addressed in versions 7.0.0-34.34, 7.0.0-34.34.1, 7.0.0-34.34~24.04.1, 7.0.0-1012.12~24.04.1, 7.0.0-1013.13, 7.0.0-1013.13~24.04.1, 7.0.0-1014.14, 7.0.0-1020.20
linux-gcp (Ubuntu package) - addressed in versions 7.0.0-1013.13, 7.0.0-1013.13~24.04.1, 7.0.0-1014.14

External References

Related Security Bulletins