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[USN-8713-1] BioSig vulnerabilities

Posted on 02 September 2026
Ubuntu Security

==========================================================================Ubuntu Security Notice USN-8713-1
September 02, 2026

biosig vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 26.04 LTS
- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS

Summary:

BioSig could be made to crash or run programs as your login if it
opened a specially crafted file.

Software Description:
- biosig: Open-source software library for biomedical signal processing

Details:

Mark Bereza and Lilith Wyatt discovered that BioSig incorrectly handled certain crafted input
files. An attacker could possibly use this issue to cause a denial of
service or execute arbitrary code. (CVE-2026-22891, CVE-2026-20777)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 26.04 LTS
libbiosig3 3.9.0-1ubuntu0.1~esm1
Available with Ubuntu Pro

Ubuntu 24.04 LTS
libbiosig3 2.6.0-1ubuntu1+esm1
Available with Ubuntu Pro

Ubuntu 22.04 LTS
libbiosig3 2.3.3-1ubuntu0.1~esm1
Available with Ubuntu Pro

In general, a standard system update will make all the necessary changes.

References:
https://ubuntu.com/security/notices/USN-8713-1
CVE-2026-20777, CVE-2026-22891

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