CVE-2025-40109: crypto: rng - Ensure set_ent is always present

Deferred
AliasesUBUNTU-CVE-2025-40109DEBIAN-CVE-2025-40109
Published 09-11-2025Last modified 11-05-2026

Vulnerability summary

CVE-2025-40109 is a vulnerability in linux with no CVSS score yet. EPSS estimates a 0.22% chance of exploitation in the next 30 days, higher than 13.1% of scored vulnerabilities.

Priority
Insufficient evidence

No CVSS vector published; no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
Not scored
010
No CVSS score recorded
EPSS score
0.22%
0%100%
Low · +0.02 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 45 · Related 42
DLA-4379-1DLA-4404-1DSA-6053-1OPENSUSE-SU-2025:20172-1SUSE-SU-2025:4393-1SUSE-SU-2025:4422-1

Timeline

  1. 09-11-2025
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: crypto: rng - Ensure set_ent is always present Ensure that set_ent is always set since only drbg provides it.

CVSS metrics

Risk metrics not yet published.

EPSS trend

Probability

0.22%

Chance of exploitation in the next 30 days

Percentile

13%

Versus all other CVEs

30-day change

Increase +0.02 pp

From 0.21% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Version check

Known conditions: not stated in public data.

Ubuntu136 products
  • linux< 5.15.0-170.180 | < 6.8.0-106.106 | < 6.17.0-7.7
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 5.15.0-1100.107 | < 6.8.0-1050.53 | < 6.17.0-1004.4
  • 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≥ 77ebdabe8de7c02f43c6de3357f79ff96f9f0579, < 15d6f42da1bb527629d8e1067b1302d58dec9166 | ≥ 77ebdabe8de7c02f43c6de3357f79ff96f9f0579, < bd903c25b652c331831226cdf56c8179d18e43f4 | ≥ 77ebdabe8de7c02f43c6de3357f79ff96f9f0579, < 17acbcd44fe8dc17dc1072375e76df2d52da6ac8 | ≥ 77ebdabe8de7c02f43c6de3357f79ff96f9f0579, < ab172f4f42626549b02bada05f09e3f2b0cc26ec | ≥ 77ebdabe8de7c02f43c6de3357f79ff96f9f0579, < c5c703b50e91dd4748769f4c5ab50d9ad60be370 | ≥ 77ebdabe8de7c02f43c6de3357f79ff96f9f0579, < e247a7d138e514a40edda7c4d72c8bd49bb2cad3 | ≥ 77ebdabe8de7c02f43c6de3357f79ff96f9f0579, < 915cb75983bc5e8b80f8a2f25a4af463f7b18c14 | ≥ 77ebdabe8de7c02f43c6de3357f79ff96f9f0579, < c0d36727bf39bb16ef0a67ed608e279535ebf0da | 5.10

3 vendors · 138 products

References

40 links
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