CVE-2026-23098
Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
04/02/2026
Last modified:
06/02/2026
Description
In the Linux kernel, the following vulnerability has been resolved:<br />
<br />
netrom: fix double-free in nr_route_frame()<br />
<br />
In nr_route_frame(), old_skb is immediately freed without checking if<br />
nr_neigh->ax25 pointer is NULL. Therefore, if nr_neigh->ax25 is NULL,<br />
the caller function will free old_skb again, causing a double-free bug.<br />
<br />
Therefore, to prevent this, we need to modify it to check whether<br />
nr_neigh->ax25 is NULL before freeing old_skb.
Impact
References to Advisories, Solutions, and Tools
- https://git.kernel.org/stable/c/25aab6bfc31017a7e52035b99aef5c2b6bde8ffb
- https://git.kernel.org/stable/c/6e0110ea90313b7c0558a0b77038274a6821caf8
- https://git.kernel.org/stable/c/7c48fdf2d1349bb54815b56fb012b9d577707708
- https://git.kernel.org/stable/c/94d1a8bd08af1f4cc345c5c29f5db1ea72b8bb8c
- https://git.kernel.org/stable/c/9f5fa78d9980fe75a69835521627ab7943cb3d67
- https://git.kernel.org/stable/c/ba1096c315283ee3292765f6aea4cca15816c4f7
- https://git.kernel.org/stable/c/bd8955337e3764f912f49b360e176d8aaecf7016