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high7.8

CVE-2026-31683

In the Linux kernel, the following vulnerability has been resolved: batman-adv: avoid OGM aggregation when skb tailroom is insufficient When OGM aggregation st…

Impact

In the Linux kernel, the following vulnerability has been resolved: batman-adv: avoid OGM aggregation when skb tailroom is insufficient When OGM aggregation state is toggled at runtime, an existing forwarded packet may have been allocated with only packet_len bytes, while a later packet can still be selected for aggregation. Appending in this case can hit skb_put overflow conditions. Reject aggregation when the target skb tailroom cannot accommodate the new packet. The caller then falls back to creating a new forward packet instead of appending.

Affected products

VendorProductAffected versions
LinuxLinux Kernel
from 2.6.38 before 5.10.253
from 5.11 before 5.15.203
from 5.16 before 6.1.167
from 6.2 before 6.6.130
from 6.7 before 6.12.78
from 6.13 before 6.18.20

References