CVE-2026-23098
netrom: fix double-free in nr_route_frame()
CVSS Score
8.8
EPSS Score
0.0%
EPSS Percentile
3th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Feb 4, 2026 |
| Last Updated | Apr 3, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
Linux / Linux
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 25aab6bfc31017a7e52035b99aef5c2b6bde8ffb 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 6e0110ea90313b7c0558a0b77038274a6821caf8 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 7c48fdf2d1349bb54815b56fb012b9d577707708 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < bd8955337e3764f912f49b360e176d8aaecf7016 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 94d1a8bd08af1f4cc345c5c29f5db1ea72b8bb8c 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 9f5fa78d9980fe75a69835521627ab7943cb3d67 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < ba1096c315283ee3292765f6aea4cca15816c4f7
Linux / Linux
2.6.12
References
git.kernel.org: https://git.kernel.org/stable/c/25aab6bfc31017a7e52035b99aef5c2b6bde8ffb git.kernel.org: https://git.kernel.org/stable/c/6e0110ea90313b7c0558a0b77038274a6821caf8 git.kernel.org: https://git.kernel.org/stable/c/7c48fdf2d1349bb54815b56fb012b9d577707708 git.kernel.org: https://git.kernel.org/stable/c/bd8955337e3764f912f49b360e176d8aaecf7016 git.kernel.org: https://git.kernel.org/stable/c/94d1a8bd08af1f4cc345c5c29f5db1ea72b8bb8c git.kernel.org: https://git.kernel.org/stable/c/9f5fa78d9980fe75a69835521627ab7943cb3d67 git.kernel.org: https://git.kernel.org/stable/c/ba1096c315283ee3292765f6aea4cca15816c4f7