CVE-2025-39839
batman-adv: fix OOB read/write in network-coding decode
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Sep 19, 2025 |
| Last Updated | May 12, 2026 |
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Affected Versions
Linux / Linux
2df5278b0267c799f3e877e8eeddbb6e93cda0bb < 30fc47248f02b8a14a61df469e1da4704be1a19f 2df5278b0267c799f3e877e8eeddbb6e93cda0bb < 1e36c6c8dc8023b4bbe9a16e819f9998b9b6a183 2df5278b0267c799f3e877e8eeddbb6e93cda0bb < 5d334bce9fad58cf328d8fa14ea1fff855819863 2df5278b0267c799f3e877e8eeddbb6e93cda0bb < dce6c2aa70e94c04c523b375dfcc664d7a0a560a 2df5278b0267c799f3e877e8eeddbb6e93cda0bb < bb37252c9af1cb250f34735ee98f80b46be3cef1 2df5278b0267c799f3e877e8eeddbb6e93cda0bb < 20080709457bc1e920eb002483d7d981d9b2ac1c 2df5278b0267c799f3e877e8eeddbb6e93cda0bb < a67c6397fcb7e842d3c595243049940970541c48 2df5278b0267c799f3e877e8eeddbb6e93cda0bb < d77b6ff0ce35a6d0b0b7b9581bc3f76d041d4087
Linux / Linux
3.10
References
git.kernel.org: https://git.kernel.org/stable/c/30fc47248f02b8a14a61df469e1da4704be1a19f git.kernel.org: https://git.kernel.org/stable/c/1e36c6c8dc8023b4bbe9a16e819f9998b9b6a183 git.kernel.org: https://git.kernel.org/stable/c/5d334bce9fad58cf328d8fa14ea1fff855819863 git.kernel.org: https://git.kernel.org/stable/c/dce6c2aa70e94c04c523b375dfcc664d7a0a560a git.kernel.org: https://git.kernel.org/stable/c/bb37252c9af1cb250f34735ee98f80b46be3cef1 git.kernel.org: https://git.kernel.org/stable/c/20080709457bc1e920eb002483d7d981d9b2ac1c git.kernel.org: https://git.kernel.org/stable/c/a67c6397fcb7e842d3c595243049940970541c48 git.kernel.org: https://git.kernel.org/stable/c/d77b6ff0ce35a6d0b0b7b9581bc3f76d041d4087 lists.debian.org: https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html lists.debian.org: https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html cert-portal.siemens.com: https://cert-portal.siemens.com/productcert/html/ssa-089022.html cert-portal.siemens.com: https://cert-portal.siemens.com/productcert/html/ssa-032379.html