UBUNTU-CVE-2025-54489

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Source
https://ubuntu.com/security/CVE-2025-54489
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-54489.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2025-54489
Upstream
Published
2025-08-25T14:15:00Z
Modified
2026-05-20T16:23:36.170060861Z
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
  • Ubuntu - medium
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 8970 of biosig.c on the current master branch (35a819fa), when the Tag is 63: else if (tag==63) { uint8t tag2=255, len2=255; count = 0; while ((count<len) && !(FlagInfiniteLength && len2==0 && tag2==0)){ curPos += ifread(&tag2,1,1,hdr); curPos += ifread(&len2,1,1,hdr); if (VERBOSELEVEL==9) fprintf(stdout,"MFER: tag=%3i chan=%2i len=%-4i tag2=%3i len2=%3i curPos=%i %li count=%4i\n",tag,chan,len,tag2,len2,curPos,iftell(hdr),(int)count); if (FlagInfiniteLength && len2==0 && tag2==0) break; count += (2+len2); curPos += ifread(&buf,1,len2,hdr); Here, the number of bytes read is not the Data Length decoded from the current frame in the file (len) but rather is a new length contained in a single octet read from the same input file (len2). Despite this, a stack-based buffer overflow condition can still occur, as the destination buffer is still buf, which has a size of only 128 bytes, while len2 can be as large as 255.

References

Affected packages

Ubuntu:22.04:LTS / biosig

Package

Name
biosig
Purl
pkg:deb/ubuntu/biosig?arch=source&distro=jammy

Affected ranges

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

Affected versions

2.*
2.1.2-4
2.1.2-4build1
2.1.2-4build2
2.3.3-1
2.3.3-1build1
2.3.3-1build2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "biosig-tools",
            "binary_version": "2.3.3-1build2"
        },
        {
            "binary_name": "libbiosig3",
            "binary_version": "2.3.3-1build2"
        },
        {
            "binary_name": "octave-biosig",
            "binary_version": "2.3.3-1build2"
        },
        {
            "binary_name": "python3-biosig",
            "binary_version": "2.3.3-1build2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-54489.json"

Ubuntu:24.04:LTS / biosig

Package

Name
biosig
Purl
pkg:deb/ubuntu/biosig?arch=source&distro=noble

Affected ranges

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

Affected versions

2.*
2.5.0-1build2
2.5.2-1
2.5.2-1build1
2.5.2-2
2.6.0-1
2.6.0-1build1
2.6.0-1ubuntu1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "biosig-tools",
            "binary_version": "2.6.0-1ubuntu1"
        },
        {
            "binary_name": "libbiosig3",
            "binary_version": "2.6.0-1ubuntu1"
        },
        {
            "binary_name": "octave-biosig",
            "binary_version": "2.6.0-1ubuntu1"
        },
        {
            "binary_name": "python3-biosig",
            "binary_version": "2.6.0-1ubuntu1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-54489.json"

Ubuntu:25.10 / biosig

Package

Name
biosig
Purl
pkg:deb/ubuntu/biosig?arch=source&distro=questing

Affected ranges

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

Affected versions

2.*
2.6.1-1build3
3.*
3.9.0-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "biosig-tools",
            "binary_version": "3.9.0-1"
        },
        {
            "binary_name": "libbiosig3",
            "binary_version": "3.9.0-1"
        },
        {
            "binary_name": "octave-biosig",
            "binary_version": "3.9.0-1"
        },
        {
            "binary_name": "python3-biosig",
            "binary_version": "3.9.0-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-54489.json"

Ubuntu:26.04:LTS / biosig

Package

Name
biosig
Purl
pkg:deb/ubuntu/biosig?arch=source&distro=resolute

Affected ranges

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

Affected versions

3.*
3.9.0-1
3.9.0-1build1
3.9.0-1build2
3.9.0-1build3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "biosig-tools",
            "binary_version": "3.9.0-1build3"
        },
        {
            "binary_name": "libbiosig3",
            "binary_version": "3.9.0-1build3"
        },
        {
            "binary_name": "octave-biosig",
            "binary_version": "3.9.0-1build3"
        },
        {
            "binary_name": "python3-biosig",
            "binary_version": "3.9.0-1build3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-54489.json"