7.5

CVE-2025-40053: linux

CVSS: 7.5v3.1HighDeferred
AliasesUBUNTU-CVE-2025-40053DEBIAN-CVE-2025-40053
Published 28-10-2025Last modified 15-10-2026
Open JSON

Vulnerability summary

CVE-2025-40053 is a high (CVSS 7.5) vulnerability in linux. EPSS estimates a 0.63% chance of exploitation in the next 30 days, higher than 49.1% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
0.63%
0%100%
Low · +0.04 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 50 · Related 45
DLA-4379-1DLA-4404-1DSA-6053-1MGASA-2025-0309MGASA-2025-0310OPENSUSE-SU-2025:15702-1

Timeline

  1. 28-10-2025
    PublishedVulnerability first disclosed.
  2. 15-10-2026
    Last modifiedVulnerability information updated.

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 metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.63%

Chance of exploitation in the next 30 days

Percentile

49%

Versus all other CVEs

30-day change

+0.04 pp

From 0.59% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.63%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Ubuntu153 products
  • linuxAll versions (No fix recorded) | < 5.15.0-170.180 | < 6.8.0-106.106 | < 6.17.0-14.14
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1100.107 | < 6.8.0-1050.53 | < 6.17.0-1007.7
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian1 product
  • linux< 6.1.158-1 | < 6.12.57-1 | < 6.17.6-1
Linux1 product
  • linux≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 84fd710a704f3d53d4120e452e86cea558cf73a8 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 5aa9b885602811a026a3f45c92ea2b4b04c54f09 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 9d49e4b14609e1a20d931e718962c4b6b5485174 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < ea87151df398d407a632c7bf63013290f01c5009 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 7ed5010fef0930f4322d620052edc854ef3ec41f | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < fd7b6b2c920d7fd370a612be416a904d6e1ebe55 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 8169a6011c5fecc6cb1c3654c541c567d3318de8 | 2.6.12

3 vendors · 155 products

References

41 links
Show all 41 references