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Ubuntu Security Notice USN-6625-1

Ubuntu Security Notice 6625-1 - Marek Marczykowski-Górecki discovered that the Xen event channel infrastructure implementation in the Linux kernel contained a race condition. An attacker in a guest VM could possibly use this to cause a denial of service. Zheng Wang discovered a use-after-free in the Renesas Ethernet AVB driver in the Linux kernel during device removal. A privileged attacker could use this to cause a denial of service.

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==========================================================================Ubuntu Security Notice USN-6625-1February 07, 2024linux, linux-aws, linux-aws-5.4, linux-azure, linux-azure-5.4,linux-bluefield, linux-gkeop, linux-hwe-5.4, linux-ibm, linux-ibm-5.4,linux-iot, linux-kvm, linux-oracle, linux-oracle-5.4, linux-xilinx-zynqmpvulnerabilities==========================================================================A security issue affects these releases of Ubuntu and its derivatives:- Ubuntu 20.04 LTS- Ubuntu 18.04 LTS (Available with Ubuntu Pro)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-azure: Linux kernel for Microsoft Azure Cloud systems- linux-bluefield: Linux kernel for NVIDIA BlueField platforms- linux-gkeop: Linux kernel for Google Container Engine (GKE) systems- linux-ibm: Linux kernel for IBM cloud systems- linux-iot: Linux kernel for IoT platforms- linux-kvm: Linux kernel for cloud environments- linux-oracle: Linux kernel for Oracle Cloud systems- linux-xilinx-zynqmp: Linux kernel for Xilinx ZynqMP processors- linux-aws-5.4: Linux kernel for Amazon Web Services (AWS) systems- linux-azure-5.4: Linux kernel for Microsoft Azure cloud systems- linux-hwe-5.4: Linux hardware enablement (HWE) kernel- linux-ibm-5.4: Linux kernel for IBM cloud systems- linux-oracle-5.4: Linux kernel for Oracle Cloud systemsDetails:Marek Marczykowski-Górecki discovered that the Xen event channelinfrastructure implementation in the Linux kernel contained a racecondition. An attacker in a guest VM could possibly use this to cause adenial of service (paravirtualized device unavailability). (CVE-2023-34324)Zheng Wang discovered a use-after-free in the Renesas Ethernet AVB driverin the Linux kernel during device removal. A privileged attacker could usethis to cause a denial of service (system crash). (CVE-2023-35827)It was discovered that a race condition existed in the Linux kernel whenperforming operations with kernel objects, leading to an out-of-boundswrite. A local attacker could use this to cause a denial of service (systemcrash) or execute arbitrary code. (CVE-2023-45863)黄思聪 discovered that the NFC Controller Interface (NCI) implementation inthe Linux kernel did not properly handle certain memory allocation failureconditions, leading to a null pointer dereference vulnerability. A localattacker could use this to cause a denial of service (system crash).(CVE-2023-46343)Update instructions:The problem can be corrected by updating your system to the followingpackage versions:Ubuntu 20.04 LTS:   linux-image-5.4.0-1030-iot      5.4.0-1030.31   linux-image-5.4.0-1037-xilinx-zynqmp  5.4.0-1037.41   linux-image-5.4.0-1065-ibm      5.4.0-1065.70   linux-image-5.4.0-1078-bluefield  5.4.0-1078.84   linux-image-5.4.0-1085-gkeop    5.4.0-1085.89   linux-image-5.4.0-1106-kvm      5.4.0-1106.113   linux-image-5.4.0-1117-oracle   5.4.0-1117.126   linux-image-5.4.0-1118-aws      5.4.0-1118.128   linux-image-5.4.0-1123-azure    5.4.0-1123.130   linux-image-5.4.0-171-generic   5.4.0-171.189   linux-image-5.4.0-171-generic-lpae  5.4.0-171.189   linux-image-5.4.0-171-lowlatency  5.4.0-171.189   linux-image-aws-lts-20.04       5.4.0.1118.115   linux-image-azure-lts-20.04     5.4.0.1123.116   linux-image-bluefield           5.4.0.1078.73   linux-image-generic             5.4.0.171.169   linux-image-generic-lpae        5.4.0.171.169   linux-image-gkeop               5.4.0.1085.83   linux-image-gkeop-5.4           5.4.0.1085.83   linux-image-ibm-lts-20.04       5.4.0.1065.94   linux-image-kvm                 5.4.0.1106.102   linux-image-lowlatency          5.4.0.171.169   linux-image-oem                 5.4.0.171.169   linux-image-oem-osp1            5.4.0.171.169   linux-image-oracle-lts-20.04    5.4.0.1117.110   linux-image-virtual             5.4.0.171.169   linux-image-xilinx-zynqmp       5.4.0.1037.37Ubuntu 18.04 LTS (Available with Ubuntu Pro):   linux-image-5.4.0-1065-ibm      5.4.0-1065.70~18.04.1   linux-image-5.4.0-1117-oracle   5.4.0-1117.126~18.04.1   linux-image-5.4.0-1118-aws      5.4.0-1118.128~18.04.1   linux-image-5.4.0-1123-azure    5.4.0-1123.130~18.04.1   linux-image-5.4.0-171-generic   5.4.0-171.189~18.04.1   linux-image-5.4.0-171-lowlatency  5.4.0-171.189~18.04.1   linux-image-aws                 5.4.0.1118.96   linux-image-azure               5.4.0.1123.96   linux-image-generic-hwe-18.04   5.4.0.171.189~18.04.139   linux-image-ibm                 5.4.0.1065.75   linux-image-lowlatency-hwe-18.04  5.4.0.171.189~18.04.139   linux-image-oem                 5.4.0.171.189~18.04.139   linux-image-oem-osp1            5.4.0.171.189~18.04.139   linux-image-oracle              5.4.0.1117.126~18.04.89   linux-image-snapdragon-hwe-18.04  5.4.0.171.189~18.04.139   linux-image-virtual-hwe-18.04   5.4.0.171.189~18.04.139After a standard system update you need to reboot your computer to makeall the necessary changes.ATTENTION: Due to an unavoidable ABI change the kernel updates havebeen given a new version number, which requires you to recompile andreinstall 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 performthis as well.References:   https://ubuntu.com/security/notices/USN-6625-1   CVE-2023-34324, CVE-2023-35827, CVE-2023-45863, CVE-2023-46343Package Information:   https://launchpad.net/ubuntu/+source/linux/5.4.0-171.189   https://launchpad.net/ubuntu/+source/linux-aws/5.4.0-1118.128   https://launchpad.net/ubuntu/+source/linux-azure/5.4.0-1123.130   https://launchpad.net/ubuntu/+source/linux-bluefield/5.4.0-1078.84   https://launchpad.net/ubuntu/+source/linux-gkeop/5.4.0-1085.89   https://launchpad.net/ubuntu/+source/linux-ibm/5.4.0-1065.70   https://launchpad.net/ubuntu/+source/linux-iot/5.4.0-1030.31   https://launchpad.net/ubuntu/+source/linux-kvm/5.4.0-1106.113   https://launchpad.net/ubuntu/+source/linux-oracle/5.4.0-1117.126   https://launchpad.net/ubuntu/+source/linux-xilinx-zynqmp/5.4.0-1037.41

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