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() 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.

The following products are affected by CVE-2025-39839 vulnerability.

Here, you will find a curated list of external links that provide in-depth information to CVE-2025-39839.

URL	Resource
https://git.kernel.org/stable/c/1e36c6c8dc8023b4bbe9a16e819f9998b9b6a183
https://git.kernel.org/stable/c/20080709457bc1e920eb002483d7d981d9b2ac1c
https://git.kernel.org/stable/c/30fc47248f02b8a14a61df469e1da4704be1a19f
https://git.kernel.org/stable/c/5d334bce9fad58cf328d8fa14ea1fff855819863
https://git.kernel.org/stable/c/a67c6397fcb7e842d3c595243049940970541c48
https://git.kernel.org/stable/c/bb37252c9af1cb250f34735ee98f80b46be3cef1
https://git.kernel.org/stable/c/d77b6ff0ce35a6d0b0b7b9581bc3f76d041d4087
https://git.kernel.org/stable/c/dce6c2aa70e94c04c523b375dfcc664d7a0a560a
https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html
https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
https://lore.kernel.org/linux-cve-announce/2025091902-CVE-2025-39839-2786@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2025-39839
https://www.cve.org/CVERecord?id=CVE-2025-39839