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.
References (7)
Core 7
Core References
Scores
CVSS v3
8.8
EPSS
0.0018
EPSS Percentile
7.5%
Attack Vector
ADJACENT_NETWORK
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Details
CWE
CWE-415
Status
published
Products (26)
linux/Kernel
2.6.12 - 5.10.249linux
linux/Kernel
2.6.12 - 6.6.122linux
linux/Kernel
5.11.0 - 5.15.199linux
linux/Kernel
5.16.0 - 6.1.162linux
linux/Kernel
6.13.0 - 6.18.8linux
linux/Kernel
6.2.0 - 6.6.122linux
linux/Kernel
6.7.0 - 6.12.68linux
Linux/Linux
< 2.6.12
Linux/Linux
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 - 25aab6bfc31017a7e52035b99aef5c2b6bde8ffb
Linux/Linux
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 - 6e0110ea90313b7c0558a0b77038274a6821caf8
... and 16 more
Published
Feb 04, 2026
Tracked Since
Feb 18, 2026