CVE-2026-46198 batman-adv: fix integer overflow on buff_pos
An integer overflow in the batman-adv kernel module allows an out-of-bounds read, potentially exposing sensitive memory contents.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-46198?
CVE-2026-46198 is a high-severity vulnerability in Linux kernel, published on 28 May 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official 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.
Weakness: CWE-190
Which versions are affected by CVE-2026-46198?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2026-46198?
Apply the vendor's patch.
Is CVE-2026-46198 being exploited?
There is no known exploitation of CVE-2026-46198 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as AZL-89000, BELL-CVE-2026-46198, DEBIAN-CVE-2026-46198, GHSA-633g-3jmf-hx7h, ROOT-OS-DEBIAN-11-CVE-2026-46198, ROOT-OS-DEBIAN-12-CVE-2026-46198 and 3 more.