Ubuntu security

USN-5809-1: Linux kernel (OEM) vulnerabilities Kyle Zeng discovered that the sysctl implementation in the Linux kernel contained a stack-based buffer overflow. A local attacker could use this to cause a denial of service (system crash) or execute arbitrary code. (CVE-2022-4378) Tamás Koczka discovered that the Bluetooth L2CAP handshake implementation in the Linux kernel contained multiple use-after-free vulnerabilities. A physically proximate attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2022-42896) It was discovered that an integer overflow vulnerability existed in the Bluetooth subsystem in the Linux kernel. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2022-45934) Source: USN-5809-1: Linux kernel (OEM) vulnerabilities

USN-5808-1: Linux kernel (IBM) vulnerabilities It was discovered that the NFSD implementation in the Linux kernel did not properly handle some RPC messages, leading to a buffer overflow. A remote attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2022-43945) Tamás Koczka discovered that the Bluetooth L2CAP handshake implementation in the Linux kernel contained multiple use-after-free vulnerabilities. A physically proximate attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2022-42896) It was discovered that the Xen netback driver in the Linux kernel did not properly handle packets structured in certain ways. An attacker in a guest VM could possibly use this to cause a denial of service (host NIC availability). (CVE-2022-3643) It was discovered that an integer overflow vulnerability existed in the Bluetooth subsystem [ more… ]

USN-5807-1: libXpm vulnerabilities Martin Ettl discovered that libXpm incorrectly handled certain XPM files. If a user or automated system were tricked into opening a specially crafted XPM file, a remote attacker could possibly use this issue to cause libXpm to stop responding, resulting in a denial of service. (CVE-2022-44617) Marco Ivaldi discovered that libXpm incorrectly handled certain XPM files. If a user or automated system were tricked into opening a specially crafted XPM file, a remote attacker could possibly use this issue to cause libXpm to stop responding, resulting in a denial of service. (CVE-2022-46285) Alan Coopersmith discovered that libXpm incorrectly handled calling external helper binaries. If libXpm was being used by a setuid binary, a local attacker could possibly use this issue to escalate privileges. (CVE-2022-4883) Source: USN-5807-1: libXpm vulnerabilities

USN-5806-1: Ruby vulnerability Hiroshi Tokumaru discovered that Ruby did not properly handle certain user input for applications the generate HTTP responses using cgi gem. An attacker could possibly use this issue to maliciously modify the response a user would receive from a vulnerable application. Source: USN-5806-1: Ruby vulnerability

USN-5795-2: Net-SNMP vulnerabilities USN-5795-1 and 5543-1 fixed several vulnerabilities in Net-SNMP. This update provides the corresponding update for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM. Original advisory details: It was discovered that Net-SNMP incorrectly handled certain requests. A remote attacker could possibly use these issues to cause Net-SNMP to crash, resulting in a denial of service. Yu Zhang and Nanyu Zhong discovered that Net-SNMP incorrectly handled memory operations when processing certain requests. A remote attacker could use this issue to cause Net-SNMP to crash, resulting in a denial of service, or possibly execute arbitrary code. Source: USN-5795-2: Net-SNMP vulnerabilities