What’s Vulnerable › Vulnerabilities

CVE-2026-46198: batman-adv: fix integer overflow on buff_pos

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-28 · updated 2026-06-17
• Weakness: CWE-190

Description

In the Linux kernel, the following vulnerability has been resolved: batman-adv: fix integer overflow on buff_pos Fixing an integer overflow present in batadv_iv_ogm_send_to_if. The size check is done using the int type in batadv_iv_ogm_aggr_packet whereas the buff_pos variable uses the s16 type. This could lead to an out-of-bound read.

Affected products

• Linux kernel: from 2.6.38 before 5.10.258; from 5.11 before 5.15.209; from 5.16 before 6.1.175; from 6.2 before 6.6.140; from 6.7 before 6.12.90; from 6.13 before 6.18.32 — fixed in 5.10.258, 5.15.209, 6.1.175, 6.12.90, 6.18.32, 6.6.140

How to fix

Upgrade to a fixed version: Linux kernel 5.10.258, 5.15.209, 6.1.175, 6.12.90. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/0799e5943611006b346b8813c7daf7dd5aa26bfd
• https://git.kernel.org/stable/c/10bb1f366d884d506c38a947b43026a75d1afe9a
• https://git.kernel.org/stable/c/867cd090760e8f5cd206f387b47ff9c56fac04e9
• https://git.kernel.org/stable/c/96c9c0ed9a9579a9085765aceaa4556a6666eb82
• https://git.kernel.org/stable/c/974542d1efc48b7e9fe16184e647615cba39969b
• https://git.kernel.org/stable/c/b252797bfced986d6d92ec2f4cfcca842ce8aa78
• https://git.kernel.org/stable/c/bf872db54f91ffe70104b98c20068b2d5910e018
• https://git.kernel.org/stable/c/f61499359fa529f0d45a53bf7c573a49eb6322e6

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