CVE-2026-23098

moderate-risk
Published 2026-02-04

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.

Do I need to act?

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0.02% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
8
CVSS 8.8/10 High
ADJACENT_NETWORK / LOW complexity

Affected Products (12)

Affected Vendors

Linux

References (7)

Patch https://git.kernel.org/stable/c/25aab6bfc31017a7e52035b99aef5c2b6bde8ffb
Patch https://git.kernel.org/stable/c/6e0110ea90313b7c0558a0b77038274a6821caf8
Patch https://git.kernel.org/stable/c/7c48fdf2d1349bb54815b56fb012b9d577707708
Patch https://git.kernel.org/stable/c/94d1a8bd08af1f4cc345c5c29f5db1ea72b8bb8c
Patch https://git.kernel.org/stable/c/9f5fa78d9980fe75a69835521627ab7943cb3d67
Patch https://git.kernel.org/stable/c/ba1096c315283ee3292765f6aea4cca15816c4f7
Patch https://git.kernel.org/stable/c/bd8955337e3764f912f49b360e176d8aaecf7016
44
/ 100
moderate-risk
Severity 27/34 · High
Exploitability 0/34 · Minimal
Exposure 17/34 · Moderate