Alerts This Week
Warning Icon 1 1,213
Alerts This Week
Warning Icon 1 1,213

Ubuntu 26.04 LTS libyang Critical Denial of Service USN-8485-1

ubuntu
Calendar Grey June 30, 2026
Dist Ubuntu Esm H88
libyang in Ubuntu could crash or run exploits due to crafted network requests. Update recommended for security.
libyang could be made to crash or run programs if it received specially crafted network traffic.

Summary

libyang could be made to crash or run programs if it received specially

crafted network traffic.

Software Description:

- libyang: parser toolkit for IETF YANG data modeling

Details:

It was discovered that libyang incorrectly handled certain metadata list

pointers. An attacker could use this issue to cause libyang to crash,

resulting in a denial of service, or possibly execute arbitrary code.

Topics%20covered

Topics Covered

security advisory denial of service critical arbitrary code execution Ubuntu libyang

Update Instructions

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

Ubuntu 26.04 LTS
  libyang3                        3.13.6-1ubuntu0.1

Ubuntu 25.10
  libyang3                        3.13.5-2ubuntu0.1

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

References

https://ubuntu.com/security/notices/USN-8485-1

CVE-2026-41401

Severity
critical
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-8485-1

Topics%20covered

Topics Covered

security advisory denial of service critical arbitrary code execution Ubuntu libyang

Package Information

https://launchpad.net/ubuntu/+source/libyang/3.13.6-1ubuntu0.1
https://launchpad.net/ubuntu/+source/libyang/3.13.5-2ubuntu0.1

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.

Your message here