[USN-8202-1] jq vulnerabilities

========================================================================== Ubuntu Security Notice USN-8202-1 April 23, 2026 jq vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 25.10 - Ubuntu 24.04 LTS - Ubuntu 22.04 LTS - Ubuntu 20.04 LTS - Ubuntu 18.04 LTS - Ubuntu 16.04 LTS - Ubuntu 14.04 LTS Summary: Several security issues were fixed in jq. Software Description: - jq: lightweight and flexible command-line JSON processor Details: It was discovered that jq did not correctly handle certain string concatenations. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. This issue was addressed in Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS and Ubuntu 25.10. (CVE-2026-32316) It was discovered that jq did not correctly handle recursion in certain circumstances. An attacker could possibly use this issue to cause a denial of service. (CVE-2026-33947) It was discovered that jq did not correctly handle improperly terminated strings. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. This issue was addressed in Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS and Ubuntu 25.10. (CVE-2026-33948) It was discovered that jq did not correctly handle checking certain variable types. An attacker could possibly use this issue to cause a denial of service or leak sensitive information. This issue was addressed in Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS and Ubuntu 25.10. (CVE-2026-39956) It was discovered that jq did not correctly handle certain string formatting. An attacker could possibly use this issue to leak sensitive information or cause a denial of service. (CVE-2026-39979) It was discovered that jq used a fixed seed for hash table operations. An attacker could possibly use this issue to cause a denial of service. This issue was addressed in Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS and Ubuntu 25.10. (CVE-2026-40164) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 25.10 jq 1.8.1-3ubuntu1.1 libjq-dev 1.8.1-3ubuntu1.1 libjq1 1.8.1-3ubuntu1.1 Ubuntu 24.04 LTS jq 1.7.1-3ubuntu0.24.04.2 libjq-dev 1.7.1-3ubuntu0.24.04.2 libjq1 1.7.1-3ubuntu0.24.04.2 Ubuntu 22.04 LTS jq 1.6-2.1ubuntu3.2 libjq-dev 1.6-2.1ubuntu3.2 libjq1 1.6-2.1ubuntu3.2 Ubuntu 20.04 LTS jq 1.6-1ubuntu0.20.04.1+esm2 Available with Ubuntu Pro libjq-dev 1.6-1ubuntu0.20.04.1+esm2 Available with Ubuntu Pro libjq1 1.6-1ubuntu0.20.04.1+esm2 Available with Ubuntu Pro Ubuntu 18.04 LTS jq 1.5+dfsg-2ubuntu0.1~esm2 Available with Ubuntu Pro libjq-dev 1.5+dfsg-2ubuntu0.1~esm2 Available with Ubuntu Pro libjq1 1.5+dfsg-2ubuntu0.1~esm2 Available with Ubuntu Pro Ubuntu 16.04 LTS jq 1.5+dfsg-1ubuntu0.1+esm4 Available with Ubuntu Pro Ubuntu 14.04 LTS jq 1.3-1.1ubuntu1.1+esm4 Available with Ubuntu Pro In general, a standard system update will make all the necessary changes. References: https://ubuntu.com/security/notices/USN-8202-1 CVE-2026-32316, CVE-2026-33947, CVE-2026-33948, CVE-2026-39956, CVE-2026-39979, CVE-2026-40164 Package Information: https://launchpad.net/ubuntu/+source/jq/1.8.1-3ubuntu1.1 https://launchpad.net/ubuntu/+source/jq/1.7.1-3ubuntu0.24.04.2 https://launchpad.net/ubuntu/+source/jq/1.6-2.1ubuntu3.2