CVE-2025-40053
High
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
SeverityHigh
CVSS7.5
Exploit probability—
Product
Linux
PublishedOct 28, 2025
First seenOct 28, 2025
How to fix
Update
- Linux Linux84fd710a704f3d53d4120e452e86cea558cf73a8, 5aa9b885602811a026a3f45c92ea2b4b04c54f09, 9d49e4b14609e1a20d931e718962c4b6b5485174, ea87151df398d407a632c7bf63013290f01c5009, 7ed5010fef0930f4322d620052edc854ef3ec41f, fd7b6b2c920d7fd370a612be416a904d6e1ebe55, 8169a6011c5fecc6cb1c3654c541c567d3318de8 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 ≤ v < 84fd710a704f3d53d4120e452e86cea558cf73a8, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 ≤ v < 5aa9b885602811a026a3f45c92ea2b4b04c54f09, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 ≤ v < 9d49e4b14609e1a20d931e718962c4b6b5485174, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 ≤ v < ea87151df398d407a632c7bf63013290f01c5009, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 ≤ v < 7ed5010fef0930f4322d620052edc854ef3ec41f, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 ≤ v < fd7b6b2c920d7fd370a612be416a904d6e1ebe55, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 ≤ v < 8169a6011c5fecc6cb1c3654c541c567d3318de8, 2.6.12 | 84fd710a704f3d53d4120e452e86cea558cf73a8, 5aa9b885602811a026a3f45c92ea2b4b04c54f09, 9d49e4b14609e1a20d931e718962c4b6b5485174, ea87151df398d407a632c7bf63013290f01c5009, 7ed5010fef0930f4322d620052edc854ef3ec41f, fd7b6b2c920d7fd370a612be416a904d6e1ebe55, 8169a6011c5fecc6cb1c3654c541c567d3318de8 |
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