Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 25aab6bfc31017a7e52035b99aef5c2b6bde8ffb; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 6e0110ea90313b7c0558a0b77038274a6821caf8; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 7c48fdf2d1349bb54815b56fb012b9d577707708; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before bd8955337e3764f912f49b360e176d8aaecf7016; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 94d1a8bd08af1f4cc345c5c29f5db1ea72b8bb8c; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 9f5fa78d9980fe75a69835521627ab7943cb3d67; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before ba1096c315283ee3292765f6aea4cca15816c4f7 |
| Linux / Linux | affected 2.6.12; unaffected 0 before 2.6.12; unaffected 5.10.249 through 5.10.*; unaffected 5.15.199 through 5.15.*; unaffected 6.1.162 through 6.1.*; unaffected 6.6.122 through 6.6.*; unaffected 6.12.68 through 6.12.*; unaffected 6.18.8 through 6.18.*; unaffected 6.19 through * |
CWE
No CWE identifiers supplied.
References
- 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/bd8955337e3764f912f49b360e176d8aaecf7016
- https://git.kernel.org/stable/c/94d1a8bd08af1f4cc345c5c29f5db1ea72b8bb8c
- https://git.kernel.org/stable/c/9f5fa78d9980fe75a69835521627ab7943cb3d67
- https://git.kernel.org/stable/c/ba1096c315283ee3292765f6aea4cca15816c4f7