CVE-2025-39839

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux2df5278b0267c799f3e877e8eeddbb6e93cda0bb < 30fc47248f02b8a14a61df469e1da4704be1a19faffected
LinuxLinux2df5278b0267c799f3e877e8eeddbb6e93cda0bb < 1e36c6c8dc8023b4bbe9a16e819f9998b9b6a183affected
LinuxLinux2df5278b0267c799f3e877e8eeddbb6e93cda0bb < 5d334bce9fad58cf328d8fa14ea1fff855819863affected
LinuxLinux2df5278b0267c799f3e877e8eeddbb6e93cda0bb < dce6c2aa70e94c04c523b375dfcc664d7a0a560aaffected
LinuxLinux2df5278b0267c799f3e877e8eeddbb6e93cda0bb < bb37252c9af1cb250f34735ee98f80b46be3cef1affected
LinuxLinux2df5278b0267c799f3e877e8eeddbb6e93cda0bb < 20080709457bc1e920eb002483d7d981d9b2ac1caffected
LinuxLinux2df5278b0267c799f3e877e8eeddbb6e93cda0bb < a67c6397fcb7e842d3c595243049940970541c48affected
LinuxLinux2df5278b0267c799f3e877e8eeddbb6e93cda0bb < d77b6ff0ce35a6d0b0b7b9581bc3f76d041d4087affected
LinuxLinux3.10affected
LinuxLinux0 < 3.10unaffected
LinuxLinux5.4.299 <= 5.4.*unaffected
LinuxLinux5.10.243 <= 5.10.*unaffected
LinuxLinux5.15.192 <= 5.15.*unaffected
LinuxLinux6.1.151 <= 6.1.*unaffected
LinuxLinux6.6.105 <= 6.6.*unaffected
LinuxLinux6.12.46 <= 6.12.*unaffected
LinuxLinux6.16.6 <= 6.16.*unaffected
LinuxLinux6.17 <= *unaffected

Weaknesses

ADP Enrichment

CVE Program Container

Additional References

Additional References

References