DEBIAN-CVE-2025-54487

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Source
https://security-tracker.debian.org/tracker/CVE-2025-54487
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2025-54487.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2025-54487
Upstream
Published
2025-08-25T14:15:34.860Z
Modified
2026-01-13T16:08:49.080148Z
Severity
  • 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

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 8842 of biosig.c on the current master branch (35a819fa), when the Tag is 12:

             else if (tag==12)    //0x0C
             {
                 // sampling resolution
                 if (len>6) fprintf(stderr,"Warning MFER tag12 incorrect length %i>6\n",len);
                 val32   = 0;
                 int8_t  v8;
                 curPos += ifread(&UnitCode,1,1,hdr);
                 curPos += ifread(&v8,1,1,hdr);
                 curPos += ifread(buf,1,len-2,hdr);

In addition to values of len greater than 130 triggering a buffer overflow, a value of len smaller than 2 will also trigger a buffer overflow due to an integer underflow when computing len-2 in this code path.

References

Affected packages

Debian:11 / biosig

Package

Name
biosig
Purl
pkg:deb/debian/biosig?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2.*
2.1.2-4
2.3.3-1
2.4.0-1
2.4.0-2
2.5.0-1
2.5.2-1
2.5.2-2
2.6.0-1
2.6.1-1
3.*
3.9.0-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2025-54487.json"

Debian:12 / biosig

Package

Name
biosig
Purl
pkg:deb/debian/biosig?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2.*
2.5.0-1
2.5.2-1
2.5.2-2
2.6.0-1
2.6.1-1
3.*
3.9.0-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2025-54487.json"

Debian:13 / biosig

Package

Name
biosig
Purl
pkg:deb/debian/biosig?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

3.*
3.9.0-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2025-54487.json"