Ubuntu security

USN-5776-1: containerd vulnerabilities It was discovered that containerd incorrectly handled memory when receiving certain faulty Exec or ExecSync commands. A remote attacker could possibly use this issue to cause a denial of service or crash containerd. (CVE-2022-23471, CVE-2022-31030) It was discovered that containerd incorrectly set up inheritable file capabilities. An attacker could possibly use this issue to escalate privileges inside a container. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS and Ubuntu 22.04 LTS. (CVE-2022-24769) It was discovered that containerd incorrectly handled access to encrypted container images when using imgcrypt library. A remote attacker could possibly use this issue to access encrypted images from other users. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS and Ubuntu 22.04 LTS. (CVE-2022-24778) Source: USN-5776-1: containerd vulnerabilities

USN-5775-1: Vim vulnerabilities It was discovered that Vim uses freed memory in recurisve substitution of specially crafted patterns. An attacker could possbly use this to crash Vim and cause denial of service. (CVE-2022-2345) It was discovered that Vim makes illegal memory calls when patterns start with an illegal byte. An attacker could possibly use this to crash Vim, access or modify memory, or execute arbitrary commands. (CVE-2022-2581) It was discovered that Vim could be made to crash when parsing invalid line numbers. An attacker could possbly use this to crash Vim and cause denial of service. (CVE-2022-3099) It was discovered that Vim uses freed memory when autocmd changes a mark. An attacker could possbly use this to crash Vim and cause denial of service. (CVE-2022-3256) It was discovered the Vim uses an incorrect array index when window width is negative. [ more… ]

USN-5774-1: Linux kernel (Azure) vulnerabilities Jann Horn discovered that the Linux kernel did not properly track memory allocations for anonymous VMA mappings in some situations, leading to potential data structure reuse. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2022-42703) It was discovered that a race condition existed in the instruction emulator of the Linux kernel on Arm 64-bit systems. A local attacker could use this to cause a denial of service (system crash). (CVE-2022-20422) It was discovered that the KVM implementation in the Linux kernel did not properly handle virtual CPUs without APICs in certain situations. A local attacker could possibly use this to cause a denial of service (host system crash). (CVE-2022-2153) Hao Sun and Jiacheng Xu discovered that the NILFS file system implementation in the Linux [ more… ]

USN-5756-3: Linux kernel (Azure) vulnerabilities Jann Horn discovered that the Linux kernel did not properly track memory allocations for anonymous VMA mappings in some situations, leading to potential data structure reuse. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2022-42703) It was discovered that a memory leak existed in the IPv6 implementation of the Linux kernel. A local attacker could use this to cause a denial of service (memory exhaustion). (CVE-2022-3524) It was discovered that a race condition existed in the Bluetooth subsystem in the Linux kernel, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2022-3564) It was discovered that the ISDN implementation of the Linux kernel contained a use-after-free vulnerability. A privileged [ more… ]

USN-5773-1: Linux kernel (OEM) 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) Jann Horn discovered that the Linux kernel did not properly track memory allocations for anonymous VMA mappings in some situations, leading to potential data structure reuse. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2022-42703) Roger Pau Monné discovered that the Xen virtual block driver in the Linux kernel did not properly initialize memory pages to be used for shared communication with the backend. A local attacker could use this to expose sensitive information (guest kernel memory). (CVE-2022-26365) Jan Beulich discovered [ more… ]