NetSight
IP …
high8.8

CVE-2025-39839

In the Linux kernel, the following vulnerability has been resolved: batman-adv: fix OOB read/write in network-coding decode batadv_nc_skb_decode_packet() trust…

Impact

In the Linux kernel, the following vulnerability has been resolved: batman-adv: fix OOB read/write in network-coding decode batadv_nc_skb_decode_packet() trusts coded_len and checks only against skb->len. XOR starts at sizeof(struct batadv_unicast_packet), reducing payload headroom, and the source skb length is not verified, allowing an out-of-bounds read and a small out-of-bounds write. Validate that coded_len fits within the payload area of both destination and source sk_buffs before XORing.

Affected products

VendorProductAffected versions
LinuxLinux Kernel
from 3.10 before 5.4.299
from 5.5 before 5.10.243
from 5.11 before 5.15.192
from 5.16 before 6.1.151
from 6.2 before 6.6.105
from 6.7 before 6.12.46
DebianDebian Linux
Version 11.0

Weakness classification

CWE-125

References