========================================================================== Ubuntu Security Notice USN-8512-1 July 06, 2026
gzip vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 26.04 LTS - Ubuntu 24.04 LTS - Ubuntu 22.04 LTS Summary: Several security issues were fixed in Gzip. Software Description: - gzip: GNU compression utilities Details: It was discovered that Gzip's gzexe utility handled temporary files in an insecure manner. When the mktemp utility was not available, gzexe constructed a temporary file path based on the process ID, which could be predicted. A local attacker could possibly use this issue to overwrite arbitrary files via a symlink attack. (CVE-2026-41991) It was discovered that Gzip incorrectly handled certain compressed files. An attacker could possibly use this issue to obtain sensitive information or cause Gzip to crash, resulting in a denial of service. (CVE-2026-41992) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 26.04 LTS gzip 1.14-1~exp2ubuntu1.1 Ubuntu 24.04 LTS gzip 1.12-1ubuntu3.2 Ubuntu 22.04 LTS gzip 1.10-4ubuntu4.2 In general, a standard system update will make all the necessary changes. References: https://ubuntu.com/security/notices/USN-8512-1 CVE-2026-41991, CVE-2026-41992 Package Information: https://launchpad.net/ubuntu/+source/gzip/1.14-1~exp2ubuntu1.1 https://launchpad.net/ubuntu/+source/gzip/1.12-1ubuntu3.2 https://launchpad.net/ubuntu/+source/gzip/1.10-4ubuntu4.2
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