CVE-2026-31683
batman-adv: avoid OGM aggregation when skb tailroom is insufficient
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
In the Linux kernel, the following vulnerability has been resolved: batman-adv: avoid OGM aggregation when skb tailroom is insufficient When OGM aggregation state is toggled at runtime, an existing forwarded packet may have been allocated with only packet_len bytes, while a later packet can still be selected for aggregation. Appending in this case can hit skb_put overflow conditions. Reject aggregation when the target skb tailroom cannot accommodate the new packet. The caller then falls back to creating a new forward packet instead of appending.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Apr 25, 2026 |
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Affected Versions
Linux / Linux
c6c8fea29769d998d94fcec9b9f14d4b52b349d3 < 67176c96f325837b0bb3e9538ca2eba414f447d8 c6c8fea29769d998d94fcec9b9f14d4b52b349d3 < 0b10a8b355c3f71012ce89289ec2c2f5e3bfd6c1 c6c8fea29769d998d94fcec9b9f14d4b52b349d3 < 6755347c5f9bdd44dee80f692208b056fcd40a52 c6c8fea29769d998d94fcec9b9f14d4b52b349d3 < 1ada20331f2df2a942d6b83ae1f04a304b642e2a c6c8fea29769d998d94fcec9b9f14d4b52b349d3 < 6e40ebb999c2c3d2fbb3cacb61f0384ee6e69075 c6c8fea29769d998d94fcec9b9f14d4b52b349d3 < 0e35db29fc5a97a8553f7c2d3a2ba730e46b1ee8 c6c8fea29769d998d94fcec9b9f14d4b52b349d3 < eda89a1bae0602aec8314ced299bb243b9f9aeef c6c8fea29769d998d94fcec9b9f14d4b52b349d3 < 0d4aef630be9d5f9c1227d07669c26c4383b5ad0
Linux / Linux
2.6.38
References
git.kernel.org: https://git.kernel.org/stable/c/67176c96f325837b0bb3e9538ca2eba414f447d8 git.kernel.org: https://git.kernel.org/stable/c/0b10a8b355c3f71012ce89289ec2c2f5e3bfd6c1 git.kernel.org: https://git.kernel.org/stable/c/6755347c5f9bdd44dee80f692208b056fcd40a52 git.kernel.org: https://git.kernel.org/stable/c/1ada20331f2df2a942d6b83ae1f04a304b642e2a git.kernel.org: https://git.kernel.org/stable/c/6e40ebb999c2c3d2fbb3cacb61f0384ee6e69075 git.kernel.org: https://git.kernel.org/stable/c/0e35db29fc5a97a8553f7c2d3a2ba730e46b1ee8 git.kernel.org: https://git.kernel.org/stable/c/eda89a1bae0602aec8314ced299bb243b9f9aeef git.kernel.org: https://git.kernel.org/stable/c/0d4aef630be9d5f9c1227d07669c26c4383b5ad0