5.5

CVE-2025-38436: linux Improper Locking

CVSS: 5.5v3.1MediumModified
AliasesUBUNTU-CVE-2025-38436DEBIAN-CVE-2025-38436
Published 25-07-2025Last modified 11-05-2026
Open JSON

Vulnerability summary

CVE-2025-38436 is a medium (CVSS 5.5) Improper Locking vulnerability in linux. EPSS estimates a 0.15% chance of exploitation in the next 30 days, higher than 3.9% 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
0.15%
0%100%
Low · +0.02 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 41 · Related 39
MGASA-2025-0218MGASA-2025-0219OPENSUSE-SU-2025:20081-1SUSE-SU-2025:02853-1SUSE-SU-2025:02923-1SUSE-SU-2025:02969-1

Timeline

  1. 25-07-2025
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: drm/scheduler: signal scheduled fence when kill job When an entity from application B is killed, drm_sched_entity_kill() removes all jobs belonging to that entity through drm_sched_entity_kill_jobs_work(). If application A's job depends on a scheduled fence from application B's job, and that fence is not properly signaled during the killing process, application A's dependency cannot be cleared. This leads to application A hanging indefinitely while waiting for a dependency that will never be resolved. Fix this issue by ensuring that scheduled fences are properly signaled when an entity is killed, allowing dependent applications to continue execution.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

0.15%

Chance of exploitation in the next 30 days

Percentile

4%

Versus all other CVEs

30-day change

+0.02 pp

From 0.13% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.15%

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

Ubuntu147 products
  • linuxAll versions (No fix recorded) | < 6.8.0-100.100
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 6.8.0-1046.49
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ a72ce6f84109c1dec1ab236d65979d3250668af3, < 8342127a8a65b0673863b106ce32b79c91ae3270 | ≥ a72ce6f84109c1dec1ab236d65979d3250668af3, < c5734f9bab6f0d40577ad0633af4090a5fda2407 | ≥ a72ce6f84109c1dec1ab236d65979d3250668af3, < aefd0a935625165a6ca36d0258d2d053901555df | ≥ a72ce6f84109c1dec1ab236d65979d3250668af3, < aa382a8b6ed483e9812d0e63b6d1bdcba0186f29 | ≥ a72ce6f84109c1dec1ab236d65979d3250668af3, < 471db2c2d4f80ee94225a1ef246e4f5011733e50 | 4.3
  • linux_kernel≥ 4.3, < 6.6.96 | ≥ 6.7, < 6.12.36 | ≥ 6.13, < 6.15.5
Debian1 product
  • linux< 6.1.170-1 | < 6.12.37-1

3 vendors · 150 products

References

32 links
Show all 32 references