5.5

CVE-2025-21814: linux NULL Pointer Dereference

CVSS: 5.5v3.1MediumModified
AliasesUBUNTU-CVE-2025-21814DEBIAN-CVE-2025-21814
Published 27-02-2025Last modified 15-10-2026
Open JSON

Vulnerability summary

CVE-2025-21814 is a medium (CVSS 5.5) NULL Pointer Dereference vulnerability in linux. EPSS estimates a 0.26% chance of exploitation in the next 30 days, higher than 17% of scored vulnerabilities.

Overall risk
22/100
0100
Low · default modelHow is this calculated?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.26%
0%100%
Low · +0.01 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 55 · Related 54
DLA-4102-1DLA-4178-1SUSE-SU-2025:01919-1SUSE-SU-2025:01951-1SUSE-SU-2025:01964-1SUSE-SU-2025:01965-1

Timeline

  1. 27-02-2025
    PublishedVulnerability first disclosed.
  2. 15-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: ptp: Ensure info->enable callback is always set The ioctl and sysfs handlers unconditionally call the ->enable callback. Not all drivers implement that callback, leading to NULL dereferences. Example of affected drivers: ptp_s390.c, ptp_vclock.c and ptp_mock.c. Instead use a dummy callback if no better was specified by the driver.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.26%

Chance of exploitation in the next 30 days

Percentile

17%

Versus all other CVEs

30-day change

+0.01 pp

From 0.25% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.26%

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

Affected systems

Ubuntu136 products
  • linuxAll versions (No fix recorded) | < 5.4.0-216.236 | < 5.15.0-140.150 | < 6.8.0-64.67
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.4.0-1146.156 | < 5.15.0-1084.91 | < 6.8.0-1032.34
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ d94ba80ebbea17f036cecb104398fbcd788aa742, < fdc1e72487781dd7705bcbe30878bee7d5d1f3e8 | ≥ d94ba80ebbea17f036cecb104398fbcd788aa742, < 9df3a9284f39bfd51a9f72a6a165c79e2aa5066b | ≥ d94ba80ebbea17f036cecb104398fbcd788aa742, < 1334c64a5d1de6666e0c9f984db6745083df1eb4 | ≥ d94ba80ebbea17f036cecb104398fbcd788aa742, < 5d1041c76de656f9f8d5a192218039a9acf9bd00 | ≥ d94ba80ebbea17f036cecb104398fbcd788aa742, < 81846070cba17125a866e8023c01d3465b153339 | ≥ d94ba80ebbea17f036cecb104398fbcd788aa742, < 8441aea46445252df5d2eed6deb6d5246fc24002 | ≥ d94ba80ebbea17f036cecb104398fbcd788aa742, < 755caf4ee1c615ee5717862e427124370f46b1f3 | ≥ d94ba80ebbea17f036cecb104398fbcd788aa742, < fd53aa40e65f518453115b6f56183b0c201db26b | 3.0
  • linux_kernel≥ 3.0, < 6.1.129 | ≥ 6.2, < 6.6.78 | ≥ 6.7, < 6.12.14 | ≥ 6.13, < 6.13.3
Debian1 product
  • linux< 6.1.129-1 | < 6.12.15-1

3 vendors · 139 products

References

61 links
Show all 61 references