Ubuntu security

USN-5686-1: Git vulnerabilities Cory Snider discovered that Git incorrectly handled certain symbolic links. An attacker could possibly use this issue to cause an unexpected behaviour. (CVE-2022-39253) Kevin Backhouse discovered that Git incorrectly handled certain command strings. An attacker could possibly use this issue to arbitrary code execution. (CVE-2022-39260) Source: USN-5686-1: Git vulnerabilities

USN-5685-1: FRR vulnerabilities It was discovered that FRR incorrectly handled parsing certain BGP messages. A remote attacker could possibly use this issue to cause FRR to crash, resulting in a denial of service. (CVE-2022-37032) It was discovered that FRR incorrectly handled processing certain BGP messages. A remote attacker could possibly use this issue to cause FRR to crash, resulting in a denial of service, obtain sensitive information, or execute arbitrary code. (CVE-2022-37035) Source: USN-5685-1: FRR vulnerabilities

USN-5684-1: Linux kernel (Azure) vulnerabilities It was discovered that the SUNRPC RDMA protocol implementation in the Linux kernel did not properly calculate the header size of a RPC message payload. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2022-0812) Moshe Kol, Amit Klein and Yossi Gilad discovered that the IP implementation in the Linux kernel did not provide sufficient randomization when calculating port offsets. An attacker could possibly use this to expose sensitive information. (CVE-2022-1012, CVE-2022-32296) Duoming Zhou discovered that race conditions existed in the timer handling implementation of the Linux kernel’s Rose X.25 protocol layer, resulting in use-after-free vulnerabilities. A local attacker could use this to cause a denial of service (system crash). (CVE-2022-2318) Roger Pau Monné discovered that the Xen virtual block driver in the Linux kernel did not properly initialize memory pages to [ more… ]

USN-5570-2: zlib vulnerability USN-5570-1 fixed a vulnerability in zlib. This update provides the corresponding update for Ubuntu 22.04 LTS and Ubuntu 20.04 LTS. Original advisory details: Evgeny Legerov discovered that zlib incorrectly handled memory when performing certain inflate operations. An attacker could use this issue to cause zlib to crash, resulting in a denial of service, or possibly execute arbitrary code. Source: USN-5570-2: zlib vulnerability

USN-5683-1: Linux kernel (IBM) vulnerabilities It was discovered that the framebuffer driver on the Linux kernel did not verify size limits when changing font or screen size, leading to an out-of- bounds write. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-33655) Selim Enes Karaduman discovered that a race condition existed in the General notification queue implementation of 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-2022-1882) Duoming Zhou discovered that race conditions existed in the timer handling implementation of the Linux kernel’s Rose X.25 protocol layer, resulting in use-after-free vulnerabilities. A local attacker could use this to cause a denial of service (system crash). (CVE-2022-2318) Roger Pau Monné discovered [ more… ]