Description
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
linux: linux kernel; debian: debian linux
References10
- git.kernel.org/stable/c/1e36c6c8dc8023b4bbe9a16e819f9998b9b6a183 Patch
- git.kernel.org/stable/c/20080709457bc1e920eb002483d7d981d9b2ac1c Patch
- git.kernel.org/stable/c/30fc47248f02b8a14a61df469e1da4704be1a19f Patch
- git.kernel.org/stable/c/5d334bce9fad58cf328d8fa14ea1fff855819863 Patch
- git.kernel.org/stable/c/a67c6397fcb7e842d3c595243049940970541c48 Patch
- git.kernel.org/stable/c/bb37252c9af1cb250f34735ee98f80b46be3cef1 Patch
- git.kernel.org/stable/c/d77b6ff0ce35a6d0b0b7b9581bc3f76d041d4087 Patch
- git.kernel.org/stable/c/dce6c2aa70e94c04c523b375dfcc664d7a0a560a Patch
- lists.debian.org/debian-lts-announce/2025/10/msg00007.html Mailing ListThird Party Advisory
- lists.debian.org/debian-lts-announce/2025/10/msg00008.html Mailing ListThird Party Advisory
Metrics
- CVSS 3.1
-
7.1
HIGH
Score source: NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H - EPSS — exploit probability
- 0% percentile: 18 · as of 8 November 2026
- CWE
- CWE-125
Could this be exploited in your environment?
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