CVE-2025-40109 — Insufficient Entropy in Linux

CWE-331 — Insufficient Entropy52 documents7 sources
Severity
7.8HIGHOSV
OSV5.5OSV3.2
No vector
EPSS
0.1%
top 81.94%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
5
LinuxLinux KernelDebian Linux+2 more
Timeline
PublishedNov 9
Latest updateApr 13

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.

Affected Packages7 packages

▶Linuxlinux/linux_kernel5.10.0 — 5.10.246+6
▶Debianlinux/linux_kernel< 5.10.247-1+3
▶Ubuntulinux/linux_kernel< 5.15.0-170.180+2
▶CVEListV5linux/linux77ebdabe8de7c02f43c6de3357f79ff96f9f0579 — 15d6f42da1bb527629d8e1067b1302d58dec9166+8

🔴Vulnerability Details

25
OSV
linux-raspi vulnerabilities↗2026-04-01
▶
OSV
linux-raspi, linux-raspi-realtime vulnerabilities↗2026-04-01
▶
OSV
linux-azure-6.8 vulnerabilities↗2026-03-25
▶
OSV
linux-azure vulnerabilities↗2026-03-25
▶
OSV
linux-aws-6.8 vulnerabilities↗2026-03-23
▶

📋Vendor Advisories

26
Ubuntu
Linux kernel (Azure) vulnerabilities↗2026-04-13
▶
Ubuntu
Linux kernel (Azure FIPS) vulnerabilities↗2026-04-09
▶
Ubuntu
Linux kernel (Azure FIPS) vulnerabilities↗2026-04-09
▶
Ubuntu
Linux kernel (Raspberry Pi) vulnerabilities↗2026-04-01
▶
Ubuntu
Linux kernel (Raspberry Pi) vulnerabilities↗2026-04-01
▶
CVE-2025-40109 — Insufficient Entropy in Linux | cvebase