5.5

CVE-2025-38135: debian debian_linux NULL Pointer Dereference

CVSS: 5.5v3.1MediumAnalyzed
AliasesUBUNTU-CVE-2025-38135DEBIAN-CVE-2025-38135
Published 03-07-2025Last modified 11-05-2026

Vulnerability summary

CVE-2025-38135 is a medium (CVSS 5.5) NULL Pointer Dereference vulnerability in debian debian_linux. EPSS estimates a 0.21% chance of exploitation in the next 30 days, higher than 10.3% 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
0.21%
0%100%
Low · +0.03 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 53 · Related 48

Timeline

  1. 03-07-2025
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: serial: Fix potential null-ptr-deref in mlb_usio_probe() devm_ioremap() can return NULL on error. Currently, mlb_usio_probe() does not check for this case, which could result in a NULL pointer dereference. Add NULL check after devm_ioremap() to prevent this issue.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.21%

Chance of exploitation in the next 30 days

Percentile

10%

Versus all other CVEs

30-day change

+0.03 pp

From 0.18% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.21%

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

Ubuntu141 products
  • linuxAll versions (No fix recorded) | < 5.15.0-156.166 | < 6.8.0-100.100
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1092.99 | < 6.8.0-1046.49
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian2 products
Linux2 products
  • linux≥ ba44dc04300441b47618f9933bf36e75a280e5fe, < a05ebe384c7ca75476453f3070c67d9cf1d1a89f | ≥ ba44dc04300441b47618f9933bf36e75a280e5fe, < 81159a6b064142b993f2f39828b77e199c77872a | ≥ ba44dc04300441b47618f9933bf36e75a280e5fe, < 19fd9f5a69363d33079097d866eb6082d61bf31d | ≥ ba44dc04300441b47618f9933bf36e75a280e5fe, < 548b0e81b9a0902a8bc8259430ed965663baadfc | ≥ ba44dc04300441b47618f9933bf36e75a280e5fe, < a6c7c365734cd0fa1c5aa225a6294fdf80cad2ea | ≥ ba44dc04300441b47618f9933bf36e75a280e5fe, < c23d87b43f7dba5eb12820f6cf21a1cd4f63eb3d | ≥ ba44dc04300441b47618f9933bf36e75a280e5fe, < e1b144aebe6fb898d96ced8c990d7aa38fda4a7a | ≥ ba44dc04300441b47618f9933bf36e75a280e5fe, < 86bcae88c9209e334b2f8c252f4cc66beb261886 | 5.2
  • linux_kernel≥ 5.2, < 5.4.295 | ≥ 5.5, < 5.10.239 | ≥ 5.11, < 5.15.186 | ≥ 5.16, < 6.1.142 | ≥ 6.2, < 6.6.94 | ≥ 6.7, < 6.12.34 | ≥ 6.13, < 6.15.3

3 vendors · 145 products

References

47 links
Show all 47 references