CVE-2025-40109

NONECVSS 0.0

0.0

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 v3: —
EG Score: 0.0(none)
EPSS: 7.9%
KEV: Not listed

Published

November 9, 2025

Last Modified

April 15, 2026

References (8)

416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/15d6f42da1bb527629d8e1067b1302d58dec9166
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/17acbcd44fe8dc17dc1072375e76df2d52da6ac8
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/915cb75983bc5e8b80f8a2f25a4af463f7b18c14
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ab172f4f42626549b02bada05f09e3f2b0cc26ec
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/bd903c25b652c331831226cdf56c8179d18e43f4
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c0d36727bf39bb16ef0a67ed608e279535ebf0da
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c5c703b50e91dd4748769f4c5ab50d9ad60be370
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e247a7d138e514a40edda7c4d72c8bd49bb2cad3

Vendor Advisories for CVE-2025-40109(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

CVE-2025-40109
Microsoft Security Response Center (MSRC)Medium
crypto: rng - Ensure set_ent is always present

Patch Availability(28)

Vendor / Ecosystem	Fixed in / Patch	Released	Source
ubuntu	linux-tools-raspi-6.17 (6.17.0-1005.5) @ questing	2026-05-21	ubuntu
ubuntu	linux-tools-gcp-64k-6.17 (6.17.0-1004.4) @ questing	2026-05-21	ubuntu
ubuntu	linux-virtual-hwe-20.04-edge (5.15.0.170.180~20.04.3) @ focal	2026-05-21	ubuntu
ubuntu	linux-tools-realtime-5.15 (5.15.0.1099.103) @ jammy	2026-05-21	ubuntu
ubuntu	linux-tools-gcp-fips-5.15 (5.15.0.1100.90) @ jammy	2026-05-21	ubuntu
ubuntu	linux-tools-nvidia-tegra-rt-5.15 (5.15.0.1052.52) @ jammy	2026-05-21	ubuntu
ubuntu	linux-tools-aws-edge (5.15.0.1100.107~20.04.1) @ focal	2026-05-21	ubuntu
ubuntu	linux-virtual-hwe-24.04-edge (6.17.0-7.7) @ questing	2026-05-21	ubuntu
ubuntu	linux-tools-oracle-edge (5.15.0.1097.103~20.04.1) @ focal	2026-05-21	ubuntu
ubuntu	linux-tools-intel-iotg-5.15 (5.15.0.1095.95) @ jammy	2026-05-21	ubuntu
ubuntu	linux-xilinx-zynqmp-tools-5.15.0-1064 (5.15.0-1064.68) @ jammy	2026-05-21	ubuntu
ubuntu	linux-tools-nvidia-tegra-igx-rt-5.15 (5.15.0.1041.43) @ jammy	2026-05-21	ubuntu
ubuntu	linux-tools-nvidia-lowlatency-5.15 (5.15.0.1095.95) @ jammy	2026-05-21	ubuntu
ubuntu	linux-virtual-6.8 (6.8.0-106.106) @ noble	2026-05-21	ubuntu
ubuntu	linux-tools-nvidia-lowlatency-64k-6.8 (6.8.0-1049.52.1) @ noble	2026-05-21	ubuntu
ubuntu	linux-tools-gcp-fips-6.8 (6.8.0-1052.55+fips1) @ noble	2026-05-21	ubuntu
ubuntu	linux-tools-aws-edge (6.8.0-1050.53~22.04.1) @ jammy	2026-05-21	ubuntu
ubuntu	linux-tools-realtime-6.8.1 (6.8.1-1045.46) @ noble	2026-05-21	ubuntu
ubuntu	linux-tools-azure-lts-24.04 (6.8.0-1051.57) @ noble	2026-05-21	ubuntu
ubuntu	linux-tools-azure-edge (6.8.0-1051.57~22.04.1) @ jammy	2026-05-21	ubuntu
ubuntu	linux-tools-raspi-realtime-6.8 (6.8.0-2040.41) @ noble	2026-05-21	ubuntu
ubuntu	linux-tools-raspi-nolpae (5.15.0.1097.95) @ jammy	2026-05-21	ubuntu
ubuntu	linux-tools-azure-fips-5.15 (5.15.0.1109.94) @ jammy	2026-05-21	ubuntu
ubuntu	linux-tools-azure-fips-6.8 (6.8.0-1052.58+fips1) @ noble	2026-05-21	ubuntu
ubuntu	linux-tools-azure-lts-22.04 (5.15.0.1109.107) @ jammy	2026-05-21	ubuntu
ubuntu	linux-tools-azure-edge (5.15.0.1110.119~20.04.1) @ focal	2026-05-21	ubuntu
ubuntu	linux-xilinx-zynqmp (6.8.0.1029.30) @ noble	2026-05-21	ubuntu
linux	Kernel @ 5.10.246	—	osv

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Additional Vendor Advisories

(24)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 8× in last 7d / 60× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

2026-06-16 17:52 UTCEPSS rescore
2026-06-16 17:52 UTCEPSS rescore
2026-06-14 23:17 UTCEPSS rescore
2026-06-13 23:00 UTCEPSS rescore
2026-06-12 23:11 UTCEPSS rescore
2026-06-11 14:00 UTCEPSS rescore
2026-06-10 22:18 UTCEPSS rescore
2026-06-10 13:22 UTCEPSS rescore
2026-06-08 14:16 UTCEPSS rescore
2026-06-08 14:16 UTCEPSS rescore
2026-06-07 15:24 UTCEPSS rescore
2026-06-06 13:47 UTCEPSS rescore
2026-06-06 13:47 UTCEPSS rescore
2026-06-05 22:46 UTCEPSS rescore
2026-06-05 22:46 UTCEPSS rescore
2026-06-05 06:10 UTCEPSS rescore
2026-06-05 06:10 UTCEPSS rescore
2026-06-02 20:12 UTCEPSS rescore
2026-06-02 06:39 UTCOSV refresh
2026-06-01 13:51 UTCEPSS rescore
2026-06-01 13:51 UTCEPSS rescore
2026-05-31 22:30 UTCEPSS rescore
2026-05-31 22:30 UTCEPSS rescore
2026-05-31 00:16 UTCEPSS rescore
2026-05-29 13:44 UTCEPSS rescore

Show 35 more

2026-05-28 13:44 UTCEPSS rescore
2026-05-28 13:44 UTCEPSS rescore
2026-05-28 13:44 UTCEPSS rescore
2026-05-28 13:44 UTCEPSS rescore
2026-05-27 13:40 UTCEPSS rescore
2026-05-27 13:40 UTCEPSS rescore
2026-05-27 13:40 UTCEPSS rescore
2026-05-27 13:40 UTCEPSS rescore
2026-05-26 13:43 UTCEPSS rescore
2026-05-26 13:43 UTCEPSS rescore
2026-05-26 13:43 UTCEPSS rescore
2026-05-26 13:43 UTCEPSS rescore
2026-05-26 07:18 UTCEPSS rescore
2026-05-26 07:18 UTCEPSS rescore
2026-05-26 07:18 UTCEPSS rescore
2026-05-26 07:18 UTCEPSS rescore
2026-05-24 16:57 UTCEPSS rescore
2026-05-22 21:16 UTCEPSS rescore
2026-05-22 21:16 UTCEPSS rescore
2026-05-22 21:16 UTCEPSS rescore
2026-05-22 21:16 UTCEPSS rescore
2026-05-21 05:04 UTCEG score recompute
2026-05-21 05:04 UTCVendor advisory
2026-05-21 05:03 UTCGHSA enrichment
2026-05-20 22:37 UTCEPSS rescore
2026-05-20 22:37 UTCEPSS rescore
2026-05-20 22:37 UTCEPSS rescore
2026-05-20 22:37 UTCEPSS rescore
2026-05-20 22:37 UTCEPSS rescore
2026-05-20 11:21 UTCEPSS rescore
2026-05-20 11:21 UTCEPSS rescore
2026-05-20 11:21 UTCEPSS rescore
2026-05-20 11:21 UTCEPSS rescore
2026-05-20 06:03 UTCOSV refresh
2026-05-18 21:31 UTCEPSS rescore

Frequently asked(4)

What is CVE-2025-40109?

CVE-2025-40109 is a none vulnerability published on November 9, 2025. 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.

When was CVE-2025-40109 disclosed?

CVE-2025-40109 was first published in the National Vulnerability Database on November 9, 2025, with the most recent update on April 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2025-40109 actively exploited?

CVE-2025-40109 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 7.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

How do I remediate CVE-2025-40109?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-40109, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2025-40109

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CVE-2025-40109

📅 Published

🔄 Last Modified

🔗 References (8)

📣 Vendor Advisories for CVE-2025-40109(1)