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Critical DoS Vulnerabilities in Python for Ubuntu 25.10 USN-7886

Critical DoS Vulnerabilities in Python for Ubuntu 25.10 USN-7886

Linuxsecurity •LinuxSecurity Advisories • November 26, 2025

A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 25.10 - Ubuntu 25.04 Summary: Several security issues were fixed in Python. Software Description: - python3.13: An interactive high-level object-oriented language Details: USN-7886-1 fixed vulnerabilities in Python. This update provides the corresponding updates for python3.13 in Ubuntu 25.04 and Ubuntu 25.10. Original advisory details: It was discovered that Python inefficiently handled expanding system environment variables. An attacker could possibly use this issue to cause Python to consume excessive resources, leading to a denial of service. (CVE-2025-6075) Caleb Brown discovered that Python incorrectly handled the ZIP64 End of Central Directory (EOCD) Locator record offset value. An attacker could possibly use this issue to obfuscate malicious content. (CVE-2025-8291)

A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 25.10 - Ubuntu 25.04 Summary: Several security issues were fixed in Python. Software Description: - python3.13: An interactive high-level object-oriented language Details: USN-7886-1 fixed vulnerabilities in Python. This update provides the corresponding updates for python3.13 in Ubuntu 25.04 and Ubuntu 25.10. Original advisory details: It was discovered that Python inefficiently handled expanding system environment variables. An attacker could possibly use this issue to cause Python to consume excessive resources, leading to a denial of service. (CVE-2025-6075) Caleb Brown discovered that Python incorrectly handled the ZIP64 End of Central Directory (EOCD) Locator record offset value. An attacker could possibly use this issue to obfuscate malicious content. (CVE-2025-8291)

The problem can be corrected by updating your system to the following package versions: Ubuntu 25.10 libpython3.13 3.13.7-1ubuntu0.1 python3.13 3.13.7-1ubuntu0.1 Ubuntu 25.04 libpython3.13 3.13.3-1ubuntu0.4 python3.13 3.13.3-1ubuntu0.4 In general, a standard system update will make all the necessary changes.

The problem can be corrected by updating your system to the following package versions: Ubuntu 25.10 libpython3.13 3.13.7-1ubuntu0.1 python3.13 3.13.7-1ubuntu0.1 Ubuntu 25.04 libpython3.13 3.13.3-1ubuntu0.4 python3.13 3.13.3-1ubuntu0.4 In general, a standard system update will make all the necessary changes.

CVE-2025-6075, CVE-2025-8291

CVE-2025-6075, CVE-2025-8291

Extracted Entities

Attack Types (1)

Companies (1)