CVE-2025-40053
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()`.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.59%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.59% probability · 46th percentile
- CISA KEV
- Not listed
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/5aa9b885602811a026a3f45c92ea2b4b04c54f09
- https://git.kernel.org/stable/c/7ed5010fef0930f4322d620052edc854ef3ec41f
- https://git.kernel.org/stable/c/8169a6011c5fecc6cb1c3654c541c567d3318de8
- https://git.kernel.org/stable/c/84fd710a704f3d53d4120e452e86cea558cf73a8
- https://git.kernel.org/stable/c/9d49e4b14609e1a20d931e718962c4b6b5485174
- https://git.kernel.org/stable/c/ea87151df398d407a632c7bf63013290f01c5009
- https://git.kernel.org/stable/c/fd7b6b2c920d7fd370a612be416a904d6e1ebe55
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.