CVE-2025-54491

Name	CVE-2025-54491
Description	A stack-based buffer overflow vulnerability exists in the MFER parsing functionality of The Biosig Project libbiosig 3.9.0 and Master Branch (35a819fa). A specially crafted MFER file can lead to arbitrary code execution. An attacker can provide a malicious file to trigger this vulnerability.This vulnerability manifests on line 9191 of biosig.c on the current master branch (35a819fa), when the Tag is 65: else if (tag==65) //0x41: patient event { // event table curPos += ifread(buf,1,len,hdr);
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs	1112133

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
biosig (PTS)	bullseye	2.1.2-4	vulnerable
	bookworm	2.5.0-1	vulnerable
	forky, sid, trixie	3.9.0-1	vulnerable

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
biosig	source	(unstable)	(unfixed)			1112133

Notes

[trixie] - biosig <no-dsa> (Minor issue)
[bookworm] - biosig <no-dsa> (Minor issue)
[bullseye] - biosig <postponed> (Minor issue)
https://sourceforge.net/p/biosig/mailman/message/59224259/
https://sourceforge.net/p/biosig/code/ci/ba2f1c381b10f5ab50c94be3291b2560af0f7a96/