CVE-2025-39839
batman-adv: fix OOB read/write in network-coding decode
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
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.
Timeline
- CVE published
- Record last updated
Affected versions
- Linux Linux
Version range not reported
- Linux Linux
3.10
References 8
git.kernel.org
- stable/c/30fc47248f02b8a14a61df469e1da4704be1a19f
- stable/c/1e36c6c8dc8023b4bbe9a16e819f9998b9b6a183
- stable/c/5d334bce9fad58cf328d8fa14ea1fff855819863
- stable/c/dce6c2aa70e94c04c523b375dfcc664d7a0a560a
- stable/c/bb37252c9af1cb250f34735ee98f80b46be3cef1
- stable/c/20080709457bc1e920eb002483d7d981d9b2ac1c
- stable/c/a67c6397fcb7e842d3c595243049940970541c48
- stable/c/d77b6ff0ce35a6d0b0b7b9581bc3f76d041d4087