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

Metrics

No CVSS v4.0

Attack Vector Local

Attack Complexity High

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Key SSVC decision points have not yet been added.

Affected Vendors & Products

Vendors Products
Linux
  • Linux Kernel

No data.

No data.

References
Link Providers
https://git.kernel.org/stable/c/5aa9b885602811a026a3f45c92ea2b4b04c54f09 cve-icon cve-icon
https://git.kernel.org/stable/c/7ed5010fef0930f4322d620052edc854ef3ec41f cve-icon cve-icon
https://git.kernel.org/stable/c/8169a6011c5fecc6cb1c3654c541c567d3318de8 cve-icon cve-icon
https://git.kernel.org/stable/c/84fd710a704f3d53d4120e452e86cea558cf73a8 cve-icon cve-icon
https://git.kernel.org/stable/c/9d49e4b14609e1a20d931e718962c4b6b5485174 cve-icon cve-icon
https://git.kernel.org/stable/c/ea87151df398d407a632c7bf63013290f01c5009 cve-icon cve-icon
https://git.kernel.org/stable/c/fd7b6b2c920d7fd370a612be416a904d6e1ebe55 cve-icon cve-icon
https://lore.kernel.org/linux-cve-announce/2025102814-CVE-2025-40053-8e42@gregkh/T cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2025-40053 cve-icon
https://www.cve.org/CVERecord?id=CVE-2025-40053 cve-icon
History

Mon, 01 Dec 2025 06:30:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

Wed, 29 Oct 2025 13:45:00 +0000

Type Values Removed Values Added
References

Wed, 29 Oct 2025 11:00:00 +0000

Type Values Removed Values Added
First Time appeared Linux
Linux linux Kernel
Vendors & Products Linux
Linux linux Kernel

Wed, 29 Oct 2025 00:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

 cvssV3_1

{'score': 7.0, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H'}

threat_severity

Moderate

Tue, 28 Oct 2025 12:00:00 +0000

Type Values Removed Values Added
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
Title net: dlink: handle copy_thresh allocation failure
References
cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2025-10-28T11:48:28.444Z

Updated: 2025-12-01T06:17:00.436Z

Reserved: 2025-04-16T07:20:57.157Z

Link: CVE-2025-40053

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-10-28T12:15:39.510

Modified: 2025-10-30T15:05:32.197

Link: CVE-2025-40053

cve-icon Redhat

Severity : Moderate

Publid Date: 2025-10-28T00:00:00Z

Links: CVE-2025-40053 - Bugzilla