CVE-2026-63836
kernel: batman-adv: tp_meter: avoid divide-by-zero for dec_cwnd
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Severity
UnknownRed Hat Product Security
CVSS
Review impact separately from score.
Published · July 19, 2026
Updated · July 21, 2026
Description
A flaw was found in the Linux kernel. Specifically, within the batman-adv throughput meter, an arithmetic overflow in the batadv_tp_update_cwnd() function can cause a division by zero. This issue can lead to a kernel panic, resulting in a Denial of Service (DoS) for the affected system.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CWE-369 · Divide By Zero