CVE-2025-54493

Publication date 25 August 2025

Last updated 28 August 2025

Ubuntu priority

Cvss 3 Severity Score

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 9184 of biosig.c on the current master branch (35a819fa), when the Tag is 131: else if (tag==131) //0x83 { // Patient Age if (len!=7) fprintf(stderr,"Warning MFER tag131 incorrect length %i!=7\n",len); curPos += ifread(buf,1,len,hdr);

Status

Show unmaintained releases

Package	Ubuntu Release	Status
biosig	25.10 questing	Needs evaluation
	25.04 plucky	Ignored end of life, was needs-triage
	24.04 LTS noble	Needs evaluation
	22.04 LTS jammy	Needs evaluation

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
biosig	Upstream: https://sourceforge.net/p/biosig/code/ci/ba2f1c381b10f5ab50c94be3291b2560af0f7a96/

Severity score breakdown

Parameter	Value
Base score	9.8 · Critical
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H