CVEvulnerability
CVE-2025-40053
7.5 HIGH
Official page ↗
- Status
- Deferred
- Published
- 2025-10-28
- Last modified
- 2026-10-19
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- CVSS 3.1 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)
- 7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Description
In the Linux kernel, the following vulnerability has been resolved:
net: dlink: handle copy_thresh allocation failure
The driver did not handle failure of `netdev_alloc_skb_ip_align()`.
If the allocation failed, dereferencing `skb->protocol` could lead to
a NULL pointer dereference.
This patch tries to allocate `skb`. If the allocation fails, it falls
back to the normal path.
Tested-on: D-Link DGE-550T Rev-A3
References
- https://git.kernel.org/stable/c/5aa9b885602811a026a3f45c92ea2b4b04c54f09 git.kernel.org
- https://git.kernel.org/stable/c/7ed5010fef0930f4322d620052edc854ef3ec41f git.kernel.org
- https://git.kernel.org/stable/c/8169a6011c5fecc6cb1c3654c541c567d3318de8 git.kernel.org
- https://git.kernel.org/stable/c/84fd710a704f3d53d4120e452e86cea558cf73a8 git.kernel.org
- https://git.kernel.org/stable/c/9d49e4b14609e1a20d931e718962c4b6b5485174 git.kernel.org
- https://git.kernel.org/stable/c/ea87151df398d407a632c7bf63013290f01c5009 git.kernel.org
- https://git.kernel.org/stable/c/fd7b6b2c920d7fd370a612be416a904d6e1ebe55 git.kernel.org