cve/2025/CVE-2025-39839.md

### [CVE-2025-39839](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-39839)
![](https://img.shields.io/static/v1?label=Product&message=Linux&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=2df5278b0267c799f3e877e8eeddbb6e93cda0bb%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=3.10%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=n%2Fa&color=blue)

### Description

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

### POC

#### Reference
No PoCs from references.

#### Github
- https://github.com/w4zu/Debian_security