Detections
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CVE-2026-23098
high
Description
In the Linux kernel, the following vulnerability has been resolved: netrom: fix double-free in nr_route_frame() In nr_route_frame(), old_skb is immediately freed without checking if nr_neigh->ax25 pointer is NULL. Therefore, if nr_neigh->ax25 is NULL, the caller function will free old_skb again, causing a double-free bug. Therefore, to prevent this, we need to modify it to check whether nr_neigh->ax25 is NULL before freeing old_skb.
References
https://git.kernel.org/stable/c/bd8955337e3764f912f49b360e176d8aaecf7016
https://git.kernel.org/stable/c/ba1096c315283ee3292765f6aea4cca15816c4f7
https://git.kernel.org/stable/c/9f5fa78d9980fe75a69835521627ab7943cb3d67
https://git.kernel.org/stable/c/94d1a8bd08af1f4cc345c5c29f5db1ea72b8bb8c
https://git.kernel.org/stable/c/7c48fdf2d1349bb54815b56fb012b9d577707708
https://git.kernel.org/stable/c/6e0110ea90313b7c0558a0b77038274a6821caf8
https://git.kernel.org/stable/c/25aab6bfc31017a7e52035b99aef5c2b6bde8ffb