Finit has heap based buffer overwrite in urandom.so plugin

published 2025-05-06 18 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-14717

cvss: 4.6; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.1%; EPSS 0.1% chance of exploitation in 30 days, percentile 3%
public exploits: 0; none known

Finit provides fast init for Linux systems. Finit's urandom plugin has a heap buffer overwrite vulnerability at boot which leads to it overwriting other parts of the heap, possibly causing random instabilities and undefined behavior. The urandom plugin is enabled by default, so this bug affects everyone using Finit 4.2 or later that do not explicitly disable the plugin at build time. This bug is fixed in Finit 4.12. Those who cannot upgrade or backport the fix to urandom.c are strongly recommended to disable the plugin in the call to the `configure` script.

Patch / fix

distros 1 links 1

finit Debian 14, Debian 13 4.12-1

debian advisories DEBIAN-CVE-2025-32022

github.com/troglobit/finit@3feff37 commit

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 18 mo ago (2025-05-06)

Exploit prediction

0.15% chance of exploitation in the next 30 days, higher than 3% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	4.6	CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:N/I:H/A:L

Affected products

troglobit finit

Classification

Weakness

CWE-787 Out-of-bounds Write

References

Sources

CVE List CVE-2025-32022
NVD CVE-2025-32022

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary