Description
In the Linux kernel, the following vulnerability has been resolved: batman-adv: ensure minimal ethernet header on TX As documented in commit 8bd67ebb50c0 ("net: bridge: xmit: make sure we have at least eth header len bytes"), it is possible by for a local user with eBPF TC hook access to attach a tc filter which truncates the packet and redirects to an batadv interface. But the code assumes that at least ETH_HLEN bytes are available and thus might read outside of the available buffer. The batadv_interface_tx() must therefore always check itself if enough data is available for the ethernet header and don't rely on min_header_len.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
c6c8fea29769d998d94fcec9b9f14d4b52b349d3 to < 58799078afebd5115e052bf69ad6697f9759dd6faffectedc6c8fea29769d998d94fcec9b9f14d4b52b349d3 to < 38cd10b0aeec755d89f78722a2b83f4088ff0cb0affectedc6c8fea29769d998d94fcec9b9f14d4b52b349d3 to < 811fea37620f2097955d95ce81cfdba03fd30f1baffectedc6c8fea29769d998d94fcec9b9f14d4b52b349d3 to < e6640923afee619d9fa82b07394dc9498e202304affectedc6c8fea29769d998d94fcec9b9f14d4b52b349d3 to < 6b4f521e01257387906f8b969ad3450d8208d4e2affectedc6c8fea29769d998d94fcec9b9f14d4b52b349d3 to < 9e16b6751a8206de0b865d99bb02771e6751d12daffectedc6c8fea29769d998d94fcec9b9f14d4b52b349d3 to < dbeb4145d9778f922f459935da9a027750765a69affectedc6c8fea29769d998d94fcec9b9f14d4b52b349d3 to < 49df66b7993c80b80c7eb9a84ba5b3410c8296a0affected
Linux Linux
Default version status: affected
2.6.38affected0 to < 2.6.38unaffected5.10.261 to ≤ 5.10.*unaffected5.15.212 to ≤ 5.15.*unaffected6.1.178 to ≤ 6.1.*unaffected6.6.145 to ≤ 6.6.*unaffected6.12.97 to ≤ 6.12.*unaffected6.18.40 to ≤ 6.18.*unaffected7.1.5 to ≤ 7.1.*unaffected7.2 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/58799078afebd5115e052bf69ad6697f9759dd6f ↗
- https://git.kernel.org/stable/c/38cd10b0aeec755d89f78722a2b83f4088ff0cb0 ↗
- https://git.kernel.org/stable/c/811fea37620f2097955d95ce81cfdba03fd30f1b ↗
- https://git.kernel.org/stable/c/e6640923afee619d9fa82b07394dc9498e202304 ↗
- https://git.kernel.org/stable/c/6b4f521e01257387906f8b969ad3450d8208d4e2 ↗
- https://git.kernel.org/stable/c/9e16b6751a8206de0b865d99bb02771e6751d12d ↗
- https://git.kernel.org/stable/c/dbeb4145d9778f922f459935da9a027750765a69 ↗
- https://git.kernel.org/stable/c/49df66b7993c80b80c7eb9a84ba5b3410c8296a0 ↗