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

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.

The EPSS score is 0.00068.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Linux Linux unaffected
Version Status Constraints
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 affected < 84fd710a704f3d53d4120e452e86cea558cf73a8
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 affected < 5aa9b885602811a026a3f45c92ea2b4b04c54f09
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 affected < 9d49e4b14609e1a20d931e718962c4b6b5485174
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 affected < ea87151df398d407a632c7bf63013290f01c5009
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 affected < 7ed5010fef0930f4322d620052edc854ef3ec41f
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 affected < fd7b6b2c920d7fd370a612be416a904d6e1ebe55
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 affected < 8169a6011c5fecc6cb1c3654c541c567d3318de8
Linux Linux affected
Version Status Constraints
2.6.12 affected —
0 unaffected < 2.6.12
5.10.246 unaffected ≤ 5.10.*
5.15.195 unaffected ≤ 5.15.*
6.1.156 unaffected ≤ 6.1.*
6.6.112 unaffected ≤ 6.6.*
6.12.53 unaffected ≤ 6.12.*
6.17.3 unaffected ≤ 6.17.*
6.18 unaffected ≤ *

No data.

No data.

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Vendors Products
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Advisories
Source ID Title
Debian DLA Debian DLA DLA-4379-1 linux-6.1 security update
Debian DLA Debian DLA DLA-4404-1 linux security update
Debian DSA Debian DSA DSA-6053-1 linux security update
Ubuntu USN Ubuntu USN USN-8029-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-8030-1 Linux kernel (GCP) vulnerabilities
Ubuntu USN Ubuntu USN USN-8033-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-8033-2 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-8033-3 Linux kernel (FIPS) vulnerabilities
Ubuntu USN Ubuntu USN USN-8034-1 Linux kernel (NVIDIA Tegra) vulnerabilities
Ubuntu USN Ubuntu USN USN-8033-4 Linux kernel (AWS) vulnerabilities
Ubuntu USN Ubuntu USN USN-8029-2 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-8033-5 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-8034-2 Linux kernel (NVIDIA Tegra IGX) vulnerabilities
Ubuntu USN Ubuntu USN USN-8048-1 Linux kernel (OEM) vulnerabilities
Ubuntu USN Ubuntu USN USN-8033-6 Linux kernel (NVIDIA) vulnerabilities
Ubuntu USN Ubuntu USN USN-8033-7 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-8033-8 Linux kernel (Intel IoTG) vulnerabilities
Ubuntu USN Ubuntu USN USN-8029-3 Linux kernel (Azure) vulnerabilities
Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

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

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

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

cve-icon OpenCVE Enrichment

Updated: 2025-10-29T10:58:12Z

Weaknesses

No weakness.