#ubuntu

Ubuntu Security Notice 5486-1 - It was discovered that some Intel processors did not implement sufficient control flow management. A local attacker could use this to cause a denial of service. Joseph Nuzman discovered that some Intel processors did not properly initialise shared resources. A local attacker could use this to obtain sensitive information. Mark Ermolov, Dmitry Sklyarov and Maxim Goryachy discovered that some Intel processors did not prevent test and debug logic from being activated at runtime. A local attacker could use this to escalate privileges.

Aaron Adams discovered that the netfilter subsystem in the Linux kernel did not properly handle the removal of stateful expressions in some situations, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or execute arbitrary code. Ziming Zhang discovered that the netfilter subsystem in the Linux kernel did not properly validate sets with multiple ranged fields. A local attacker could use this to cause a denial of service or execute arbitrary code.

Ubuntu Security Notice 5485-1 - It was discovered that some Intel processors did not completely perform cleanup actions on multi-core shared buffers. A local attacker could possibly use this to expose sensitive information. It was discovered that some Intel processors did not completely perform cleanup actions on microarchitectural fill buffers. A local attacker could possibly use this to expose sensitive information. It was discovered that some Intel processors did not properly perform cleanup during specific special register write operations. A local attacker could possibly use this to expose sensitive information.

Ubuntu Security Notice 5484-1 - It was discovered that the Linux kernel did not properly restrict access to the kernel debugger when booted in secure boot environments. A privileged attacker could use this to bypass UEFI Secure Boot restrictions. It was discovered that a race condition existed in the network scheduling subsystem of the Linux kernel, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service or possibly execute arbitrary code.

Ubuntu Security Notice 5482-1 - It was discovered that SPIP incorrectly validated inputs. An authenticated attacker could possibly use this issue to execute arbitrary code. Charles Fol and Theo Gordyjan discovered that SPIP is vulnerable to cross site scripting. If a user were tricked into browsing a malicious SVG file, an attacker could possibly exploit this issue to execute arbitrary code. This issue was only fixed in Ubuntu 21.10.

Ubuntu Security Notice 5476-1 - Han Zheng discovered that Liblouis incorrectly handled certain inputs. An attacker could possibly use this issue to cause a crash. This issue was addressed in Ubuntu 21.10 and Ubuntu 22.04 LTS. It was discovered that Liblouis incorrectly handled certain inputs. An attacker could possibly use this issue to execute arbitrary code or cause a crash.

There is a stack-overflow at ecma-helpers.c:326 in ecma_get_lex_env_type in JerryScript 2.4.0

There is a heap-use-after-free at ecma-helpers-string.c:1940 in ecma_compare_ecma_non_direct_strings in JerryScript 2.4.0

NHI’s health insurance web service component has insufficient validation for input string length, which can result in heap-based buffer overflow attack. A remote attacker can exploit this vulnerability to flood the memory space reserved for the program, in order to terminate service without authentication, which requires a system restart to recover service.

Ubuntu Security Notice 5483-1 - It was discovered that Exempi incorrectly handled certain media files. If a user or automated system were tricked into opening a specially crafted file, a remote attacker could cause Exempi to stop responding or crash, resulting in a denial of service, or possibly execute arbitrary code.