[월:] 2023년 02월

USN-5879-1: Linux kernel (HWE) 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 the Bluetooth HCI implementation in the Linux kernel did not properly deallocate memory in some situations. An attacker could possibly use this cause a denial of service (memory exhaustion). (CVE-2022-3619) It was discovered that the Broadcom FullMAC USB WiFi driver in the Linux kernel did not properly perform bounds checking in some situations. A physically proximate attacker could [ more… ]

USN-5878-1: Linux kernel (Azure) vulnerabilities It was discovered that the Bluetooth HCI implementation in the Linux kernel did not properly deallocate memory in some situations. An attacker could possibly use this cause a denial of service (memory exhaustion). (CVE-2022-3619) It was discovered that the Broadcom FullMAC USB WiFi driver in the Linux kernel did not properly perform bounds checking in some situations. A physically proximate attacker could use this to craft a malicious USB device that when inserted, could cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2022-3628) It was discovered that a use-after-free vulnerability existed in the Bluetooth stack in the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2022-3640) Tamás Koczka discovered that the Bluetooth L2CAP implementation in the Linux kernel [ more… ]

USN-5778-2: X.Org X Server vulnerabilities USN-5778-1 fixed several vulnerabilities in X.Org. This update provides the corresponding update for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM. Original advisory details: Jan-Niklas Sohn discovered that X.Org X Server extensions contained multiple security issues. An attacker could possibly use these issues to cause the X Server to crash, execute arbitrary code, or escalate privileges. Source: USN-5778-2: X.Org X Server vulnerabilities

USN-5873-1: Go Text vulnerabilities It was discovered that Go Text incorrectly handled certain encodings. An attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. (CVE-2020-14040) It was discovered that Go Text incorrectly handled certain BCP 47 language tags. An attacker could possibly use this issue to cause a denial of service. CVE-2020-28851, CVE-2020-28852 and CVE-2021-38561 affected only Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. (CVE-2020-28851, CVE-2020-28852, CVE-2021-38561, CVE-2022-32149) Source: USN-5873-1: Go Text vulnerabilities

USN-5877-1: Linux kernel (GKE) 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) Mingwei Zhang discovered that the KVM implementation for AMD processors in the Linux kernel did not properly handle cache coherency with Secure Encrypted Virtualization (SEV). A local attacker could possibly use this to cause a denial of service (host system crash). (CVE-2022-0171) It was discovered that a race condition existed in the Android Binder IPC subsystem in the Linux kernel, leading to [ more… ]