========================================================================== Ubuntu Security Notice USN-5755-1 December 01, 2022 linux, linux-aws, linux-aws-5.15, linux-gcp, linux-gkeop, linux-hwe-5.15, linux-ibm, linux-intel-iotg, linux-kvm, linux-lowlatency, linux-lowlatency-hwe-5.15, linux-oracle, linux-oracle-5.15, linux-raspi vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 22.04 LTS - Ubuntu 20.04 LTS Summary: Several security issues were fixed in the Linux kernel. Software Description: - linux: Linux kernel - linux-aws: Linux kernel for Amazon Web Services (AWS) systems - linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems - linux-gkeop: Linux kernel for Google Container Engine (GKE) systems - linux-ibm: Linux kernel for IBM cloud systems - linux-intel-iotg: Linux kernel for Intel IoT platforms - linux-kvm: Linux kernel for cloud environments - linux-lowlatency: Linux low latency kernel - linux-oracle: Linux kernel for Oracle Cloud systems - linux-raspi: Linux kernel for Raspberry Pi systems - linux-aws-5.15: Linux kernel for Amazon Web Services (AWS) systems - linux-hwe-5.15: Linux hardware enablement (HWE) kernel - linux-lowlatency-hwe-5.15: Linux low latency kernel - linux-oracle-5.15: Linux kernel for Oracle Cloud systems Details: 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) 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 user could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2022-3565) It was discovered that the TCP implementation in the Linux kernel contained a data race condition. An attacker could possibly use this to cause undesired behaviors. (CVE-2022-3566) It was discovered that the IPv6 implementation in the Linux kernel contained a data race condition. An attacker could possibly use this to cause undesired behaviors. (CVE-2022-3567) It was discovered that the Realtek RTL8152 USB Ethernet adapter driver in the Linux kernel did not properly handle certain error conditions. A local attacker with physical access could plug in a specially crafted USB device to cause a denial of service (memory exhaustion). (CVE-2022-3594) It was discovered that a null pointer dereference existed in the NILFS2 file system implementation in the Linux kernel. A local attacker could use this to cause a denial of service (system crash). (CVE-2022-3621) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 22.04 LTS: linux-image-5.15.0-1011-gkeop 5.15.0-1011.15 linux-image-5.15.0-1021-ibm 5.15.0-1021.24 linux-image-5.15.0-1021-intel-iotg 5.15.0-1021.26 linux-image-5.15.0-1021-raspi 5.15.0-1021.23 linux-image-5.15.0-1021-raspi-nolpae 5.15.0-1021.23 linux-image-5.15.0-1024-kvm 5.15.0-1024.29 linux-image-5.15.0-1025-gcp 5.15.0-1025.32 linux-image-5.15.0-1025-oracle 5.15.0-1025.31 linux-image-5.15.0-1026-aws 5.15.0-1026.30 linux-image-5.15.0-56-generic 5.15.0-56.62 linux-image-5.15.0-56-generic-64k 5.15.0-56.62 linux-image-5.15.0-56-generic-lpae 5.15.0-56.62 linux-image-5.15.0-56-lowlatency 5.15.0-56.62 linux-image-5.15.0-56-lowlatency-64k 5.15.0-56.62 linux-image-aws 5.15.0.1026.24 linux-image-aws-lts-22.04 5.15.0.1026.24 linux-image-gcp 5.15.0.1025.20 linux-image-generic 5.15.0.56.54 linux-image-generic-64k 5.15.0.56.54 linux-image-generic-64k-hwe-22.04 5.15.0.56.54 linux-image-generic-hwe-22.04 5.15.0.56.54 linux-image-generic-lpae 5.15.0.56.54 linux-image-generic-lpae-hwe-22.04 5.15.0.56.54 linux-image-gkeop 5.15.0.1011.10 linux-image-gkeop-5.15 5.15.0.1011.10 linux-image-ibm 5.15.0.1021.17 linux-image-intel-iotg 5.15.0.1021.20 linux-image-kvm 5.15.0.1024.22 linux-image-lowlatency 5.15.0.56.49 linux-image-lowlatency-64k 5.15.0.56.49 linux-image-lowlatency-64k-hwe-22.04 5.15.0.56.49 linux-image-lowlatency-hwe-22.04 5.15.0.56.49 linux-image-oracle 5.15.0.1025.20 linux-image-raspi 5.15.0.1021.18 linux-image-raspi-nolpae 5.15.0.1021.18 linux-image-virtual 5.15.0.56.54 linux-image-virtual-hwe-22.04 5.15.0.56.54 Ubuntu 20.04 LTS: linux-image-5.15.0-1025-oracle 5.15.0-1025.31~20.04.2 linux-image-5.15.0-1026-aws 5.15.0-1026.30~20.04.2 linux-image-5.15.0-56-generic 5.15.0-56.62~20.04.1 linux-image-5.15.0-56-generic-64k 5.15.0-56.62~20.04.1 linux-image-5.15.0-56-generic-lpae 5.15.0-56.62~20.04.1 linux-image-5.15.0-56-lowlatency 5.15.0-56.62~20.04.1 linux-image-5.15.0-56-lowlatency-64k 5.15.0-56.62~20.04.1 linux-image-aws 5.15.0.1026.30~20.04.16 linux-image-generic-64k-hwe-20.04 5.15.0.56.62~20.04.22 linux-image-generic-hwe-20.04 5.15.0.56.62~20.04.22 linux-image-generic-lpae-hwe-20.04 5.15.0.56.62~20.04.22 linux-image-lowlatency-64k-hwe-20.04 5.15.0.56.62~20.04.20 linux-image-lowlatency-hwe-20.04 5.15.0.56.62~20.04.20 linux-image-oracle 5.15.0.1025.31~20.04.1 linux-image-virtual-hwe-20.04 5.15.0.56.62~20.04.22 After a standard system update you need to reboot your computer to make all the necessary changes. ATTENTION: Due to an unavoidable ABI change the kernel updates have been given a new version number, which requires you to recompile and reinstall all third party kernel modules you might have installed. Unless you manually uninstalled the standard kernel metapackages (e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual, linux-powerpc), a standard system upgrade will automatically perform this as well. References: https://ubuntu.com/security/notices/USN-5755-1 CVE-2022-3524, CVE-2022-3564, CVE-2022-3565, CVE-2022-3566, CVE-2022-3567, CVE-2022-3594, CVE-2022-3621, CVE-2022-42703, CVE-2022-43945 Package Information: https://launchpad.net/ubuntu/+source/linux/5.15.0-56.62 https://launchpad.net/ubuntu/+source/linux-aws/5.15.0-1026.30 https://launchpad.net/ubuntu/+source/linux-gcp/5.15.0-1025.32 https://launchpad.net/ubuntu/+source/linux-gkeop/5.15.0-1011.15 https://launchpad.net/ubuntu/+source/linux-ibm/5.15.0-1021.24 https://launchpad.net/ubuntu/+source/linux-intel-iotg/5.15.0-1021.26 https://launchpad.net/ubuntu/+source/linux-kvm/5.15.0-1024.29 https://launchpad.net/ubuntu/+source/linux-lowlatency/5.15.0-56.62 https://launchpad.net/ubuntu/+source/linux-oracle/5.15.0-1025.31 https://launchpad.net/ubuntu/+source/linux-raspi/5.15.0-1021.23 https://launchpad.net/ubuntu/+source/linux-aws-5.15/5.15.0-1026.30~20.04.2 https://launchpad.net/ubuntu/+source/linux-hwe-5.15/5.15.0-56.62~20.04.1 https://launchpad.net/ubuntu/+source/linux-lowlatency-hwe-5.15/5.15.0-56.62~20.04.1 https://launchpad.net/ubuntu/+source/linux-oracle-5.15/5.15.0-1025.31~20.04.2