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[USN-8481-1] NSS vulnerability

Posted on 29 June 2026
Ubuntu Security

==========================================================================Ubuntu Security Notice USN-8481-1
June 29, 2026

nss vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 26.04 LTS
- Ubuntu 25.10
- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS

Summary:

NSS could be made to crash or expose sensitive information if it received
specially crafted input.

Software Description:
- nss: Network Security Service library

Details:

Haruto Kimura discovered that NSS had incorrecty handled parsing PKCS#11
URI escape sequences. An attacker could possibly use this issue to cause
NSS to crash, resulting in a denial of service, or obtain sensitive
information.

Update instructions:

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

Ubuntu 26.04 LTS
libnss3 2:3.120-1ubuntu2.1

Ubuntu 25.10
libnss3 2:3.114-1ubuntu0.2

Ubuntu 24.04 LTS
libnss3 2:3.98-1ubuntu0.2

Ubuntu 22.04 LTS
libnss3 2:3.98-0ubuntu0.22.04.4

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

References:
https://ubuntu.com/security/notices/USN-8481-1
CVE-2026-12318

Package Information:
https://launchpad.net/ubuntu/+source/nss/2:3.120-1ubuntu2.1
https://launchpad.net/ubuntu/+source/nss/2:3.114-1ubuntu0.2
https://launchpad.net/ubuntu/+source/nss/2:3.98-1ubuntu0.2
https://launchpad.net/ubuntu/+source/nss/2:3.98-0ubuntu0.22.04.4

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