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Critical DoS Vulnerability in glibc: Ubuntu 22.04 LTS USN-7541-1 Alert

GNU C Library could be made to crash or run programs if it processed specially crafted dynamically shared library.. ========================================================================== Ubuntu Security Notice USN-7541-1 May 28, 2025 glibc vulnerability ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 22.04 LTS - Ubuntu 20.04 LTS - Ubuntu 18.04 LTS Summary: GNU C Library could be made to crash or run programs if it processed specially crafted dynamically shared library. Software Description: - glibc: GNU C Library Details: It was discovered that the GNU C Library incorrectly search LD_LIBRARY_PATH to determine which library to load when statically linked setuid binary calls dlopen. A local attacker could possibly use this issue to cause a denial of service or execute arbitrary code. Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 22.04 LTS libc6 2.35-0ubuntu3.10 Ubuntu 20.04 LTS libc6 2.31-0ubuntu9.18 Ubuntu 18.04 LTS libc6 2.27-3ubuntu1.6+esm5 Available with Ubuntu Pro In general, a standard system update will make all the necessary changes. References: https://ubuntu.com/security/notices/USN-7541-1 CVE-2025-4802 Package Information: https://launchpad.net/ubuntu/+source/glibc/2.35-0ubuntu3.10 https://launchpad.net/ubuntu/+source/glibc/2.31-0ubuntu9.18 . Ubuntu Security Notice USN-7542-1 tackles a glibc flaw that could lead to system instability or unauthorized code execution in specific releases.. glibc vulnerability, denial of service, dynamic library, Ubuntu security, library update. . Severity: Critical. LinuxSecurity.com Team

May 28, 2025 •Critical Ubuntu