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Ubuntu 26.04 LTS alsa-lib Critical Denial of Service CVE-2026-56109

ubuntu
Calendar Grey July 14, 2026
Dist Ubuntu Esm H88
Security concerns with alsa-lib in Ubuntu may lead to crashes or unauthorized program execution if crafted files are opened. Update now!
alsa-lib could be made to crash or run programs as your login if it opened a specially crafted file.

Summary

alsa-lib could be made to crash or run programs as your login if it opened

a specially crafted file.

Software Description:

- alsa-lib: shared library for ALSA applications

Details:

It was discovered that alsa-lib incorrectly handled certain ALSA

configuration text. An attacker could use this issue to cause alsa-lib to

crash, resulting in a denial of service, or possibly execute arbitrary

code.

Topics%20covered

Topics Covered

security advisory denial of service critical remote code execution Ubuntu alsa-lib

Update Instructions

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

Ubuntu 26.04 LTS
  libasound2t64                   1.2.15.3-1ubuntu1.1

Ubuntu 24.04 LTS
  libasound2t64                   1.2.11-1ubuntu0.3

Ubuntu 22.04 LTS
  libasound2                      1.2.6.1-1ubuntu1.2

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

References

https://ubuntu.com/security/notices/USN-8538-1

CVE-2026-56109

Severity
critical
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-8538-1

Topics%20covered

Topics Covered

security advisory denial of service critical remote code execution Ubuntu alsa-lib

Package Information

https://launchpad.net/ubuntu/+source/alsa-lib/1.2.15.3-1ubuntu1.1
https://launchpad.net/ubuntu/+source/alsa-lib/1.2.11-1ubuntu0.3
https://launchpad.net/ubuntu/+source/alsa-lib/1.2.6.1-1ubuntu1.2

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