5.5

CVE-2025-38054: linux Use of Uninitialized Resource

CVSS: 5.5v3.1MediumAnalyzed
AliasesUBUNTU-CVE-2025-38054DEBIAN-CVE-2025-38054
Published 18-06-2025Last modified 11-05-2026
Open JSON

Vulnerability summary

CVE-2025-38054 is a medium (CVSS 5.5) Use of Uninitialized Resource vulnerability in linux. EPSS estimates a 0.19% chance of exploitation in the next 30 days, higher than 7.7% 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
0.19%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 7 · Related 7
USN-7769-1USN-7769-2USN-7769-3USN-7770-1USN-7771-1USN-7789-1

Timeline

  1. 18-06-2025
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: ptp: ocp: Limit signal/freq counts in summary output functions The debugfs summary output could access uninitialized elements in the freq_in[] and signal_out[] arrays, causing NULL pointer dereferences and triggering a kernel Oops (page_fault_oops). This patch adds u8 fields (nr_freq_in, nr_signal_out) to track the number of initialized elements, with a maximum of 4 per array. The summary output functions are updated to respect these limits, preventing out-of-bounds access and ensuring safe array handling. Widen the label variables because the change confuses GCC about max length of the strings.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.19%

Chance of exploitation in the next 30 days

Percentile

8%

Versus all other CVEs

30-day change

0.00 pp

From 0.19% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.19%

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

Ubuntu90 products
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
  • linux-aws-5.13All versions (No fix recorded)
  • linux-aws-5.19All versions (No fix recorded)
Linux2 products
  • linux≥ ef61f5528fca6c3bbb2f8bc002fd1949c9d1f9b9, < 0b7d3e782027ac3b6fec56159e8e348042000aef | ≥ ef61f5528fca6c3bbb2f8bc002fd1949c9d1f9b9, < fcad74f894ac89790084cc2e1ec61b08220941d1 | ≥ ef61f5528fca6c3bbb2f8bc002fd1949c9d1f9b9, < c9e455581e2ba87ee38c126e8dc49a424b9df0cf | 6.9
  • linux_kernel≥ 6.9, < 6.12.31 | ≥ 6.13, < 6.14.9 | 6.15:rc1 | 6.15:rc2 | 6.15:rc3 | 6.15:rc4 | 6.15:rc5 | 6.15:rc6 | 6.15:rc7
Debian1 product
  • linux< 6.12.32-1

3 vendors · 93 products

References

14 links
Show all 14 references