High severity8.8NVD Advisory· Published Feb 4, 2026· Updated Apr 3, 2026
CVE-2026-23098
CVE-2026-23098
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
13cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*+ 12 more
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*range: >=2.6.12.1,<5.10.249
- cpe:2.3:o:linux:linux_kernel:2.6.12:-:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:2.6.12:rc2:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:2.6.12:rc3:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:2.6.12:rc4:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:2.6.12:rc5:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:6.19:rc1:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:6.19:rc2:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:6.19:rc3:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:6.19:rc4:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:6.19:rc5:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:6.19:rc6:*:*:*:*:*:*
- (no CPE)
Patches
Vulnerability mechanics
References
7- git.kernel.org/stable/c/25aab6bfc31017a7e52035b99aef5c2b6bde8ffbnvdPatch
- git.kernel.org/stable/c/6e0110ea90313b7c0558a0b77038274a6821caf8nvdPatch
- git.kernel.org/stable/c/7c48fdf2d1349bb54815b56fb012b9d577707708nvdPatch
- git.kernel.org/stable/c/94d1a8bd08af1f4cc345c5c29f5db1ea72b8bb8cnvdPatch
- git.kernel.org/stable/c/9f5fa78d9980fe75a69835521627ab7943cb3d67nvdPatch
- git.kernel.org/stable/c/ba1096c315283ee3292765f6aea4cca15816c4f7nvdPatch
- git.kernel.org/stable/c/bd8955337e3764f912f49b360e176d8aaecf7016nvdPatch
News mentions
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