Ubuntu security

USN-5343-1: Linux kernel vulnerabilities Yiqi Sun and Kevin Wang discovered that the cgroups implementation in the Linux kernel did not properly restrict access to the cgroups v1 release_agent feature. A local attacker could use this to gain administrative privileges. (CVE-2022-0492) It was discovered that the aufs file system in the Linux kernel did not properly restrict mount namespaces, when mounted with the non-default allow_userns option set. A local attacker could use this to gain administrative privileges. (CVE-2016-2853) It was discovered that the aufs file system in the Linux kernel did not properly maintain POSIX ACL xattr data, when mounted with the non-default allow_userns option. A local attacker could possibly use this to gain elevated privileges. (CVE-2016-2854) It was discovered that the f2fs file system in the Linux kernel did not properly validate metadata in some situations. An attacker could use [ more… ]

USN-5340-1: CKEditor vulnerabilities Kyaw Min Thein discovered that CKEditor incorrectly handled certain inputs. An attacker could possibly use this issue to execute arbitrary code. This issue only affects Ubuntu 18.04 LTS. (CVE-2018-9861) Micha Bentkowski discovered that CKEditor incorrectly handled certain inputs. An attacker could possibly use this issue to execute arbitrary code. This issue only affects Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. (CVE-2020-9281) Anton Subbotin discovered that CKEditor incorrectly handled certain inputs. An attacker could possibly use this issue to execute arbitrary code. This issue only affects Ubuntu 21.10. (CVE-2021-32808) Anton Subbotin discovered that CKEditor incorrectly handled certain inputs. An attacker could possibly use this issue to inject arbitrary code. (CVE-2021-32809) Or Sahar discovered that CKEditor incorrectly handled certain inputs. An attacker could possibly use this issue to execute arbitrary code. This issue only affects Ubuntu 18.04 LTS and [ more… ]

USN-5341-1: GNU binutils vulnerabilities It was discovered that GNU binutils incorrectly handled checks for memory allocation when parsing relocs in a corrupt file. An attacker could possibly use this issue to cause a denial of service. (CVE-2017-17122) It was discovered that GNU binutils incorrectly handled certain corrupt DWARF debug sections. An attacker could possibly use this issue to cause GNU binutils to consume memory, resulting in a denial of service. (CVE-2021-3487) It was discovered that GNU binutils incorrectly performed bounds checking operations when parsing stabs debugging information. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. (CVE-2021-45078) Source: USN-5341-1: GNU binutils vulnerabilities

USN-5339-1: Linux kernel vulnerabilities Yiqi Sun and Kevin Wang discovered that the cgroups implementation in the Linux kernel did not properly restrict access to the cgroups v1 release_agent feature. A local attacker could use this to gain administrative privileges. (CVE-2022-0492) It was discovered that an out-of-bounds (OOB) memory access flaw existed in the f2fs module of the Linux kernel. A local attacker could use this issue to cause a denial of service (system crash). (CVE-2021-3506) Brendan Dolan-Gavitt discovered that the Marvell WiFi-Ex USB device driver in the Linux kernel did not properly handle some error conditions. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2021-43976) It was discovered that the ARM Trusted Execution Environment (TEE) subsystem in the Linux kernel contained a race condition leading to a use- after-free vulnerability. A local attacker [ more… ]

USN-5338-1: Linux kernel vulnerabilities Yiqi Sun and Kevin Wang discovered that the cgroups implementation in the Linux kernel did not properly restrict access to the cgroups v1 release_agent feature. A local attacker could use this to gain administrative privileges. (CVE-2022-0492) Jürgen Groß discovered that the Xen subsystem within the Linux kernel did not adequately limit the number of events driver domains (unprivileged PV backends) could send to other guest VMs. An attacker in a driver domain could use this to cause a denial of service in other guest VMs. (CVE-2021-28711, CVE-2021-28712, CVE-2021-28713) Jürgen Groß discovered that the Xen network backend driver in the Linux kernel did not adequately limit the amount of queued packets when a guest did not process them. An attacker in a guest VM can use this to cause a denial of service (excessive kernel memory consumption) [ more… ]