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Ubuntu Security Notice USN-6648-1
Ubuntu Security Notice 6648-1 - It was discovered that a race condition existed in the AppleTalk networking subsystem of the Linux kernel, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. Zhenghan Wang discovered that the generic ID allocator implementation in the Linux kernel did not properly check for null bitmap when releasing IDs. A local attacker could use this to cause a denial of service.
==========================================================================Ubuntu Security Notice USN-6648-1February 22, 2024linux, linux-aws, linux-aws-5.4, linux-bluefield, linux-gcp, linux-gkeop,linux-hwe-5.4, linux-ibm, linux-ibm-5.4, linux-iot, linux-kvm,linux-oracle, linux-oracle-5.4, linux-raspi, linux-raspi-5.4,linux-xilinx-zynqmp vulnerabilities==========================================================================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-bluefield: Linux kernel for NVIDIA BlueField platforms- 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-iot: Linux kernel for IoT platforms- linux-kvm: Linux kernel for cloud environments- linux-oracle: Linux kernel for Oracle Cloud systems- linux-raspi: Linux kernel for Raspberry Pi systems- linux-xilinx-zynqmp: Linux kernel for Xilinx ZynqMP processors- linux-aws-5.4: Linux kernel for Amazon Web Services (AWS) 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 systems- linux-raspi-5.4: Linux kernel for Raspberry Pi systemsDetails:It was discovered that a race condition existed in the AppleTalk networkingsubsystem of the Linux kernel, leading to a use-after-free vulnerability. Alocal attacker could use this to cause a denial of service (system crash)or possibly execute arbitrary code. (CVE-2023-51781)Zhenghan Wang discovered that the generic ID allocator implementation inthe Linux kernel did not properly check for null bitmap when releasing IDs.A local attacker could use this to cause a denial of service (systemcrash). (CVE-2023-6915)Robert Morris discovered that the CIFS network file system implementationin the Linux kernel did not properly validate certain server commandsfields, leading to an out-of-bounds read vulnerability. An attacker coulduse this to cause a denial of service (system crash) or possibly exposesensitive information. (CVE-2024-0565)Jann Horn discovered that the TLS subsystem in the Linux kernel did notproperly handle spliced messages, leading to an out-of-bounds writevulnerability. A local attacker could use this to cause a denial of service(system crash) or possibly execute arbitrary code. (CVE-2024-0646)Update instructions:The problem can be corrected by updating your system to the followingpackage versions:Ubuntu 20.04 LTS: linux-image-5.4.0-1031-iot 5.4.0-1031.32 linux-image-5.4.0-1038-xilinx-zynqmp 5.4.0-1038.42 linux-image-5.4.0-1066-ibm 5.4.0-1066.71 linux-image-5.4.0-1079-bluefield 5.4.0-1079.85 linux-image-5.4.0-1086-gkeop 5.4.0-1086.90 linux-image-5.4.0-1103-raspi 5.4.0-1103.115 linux-image-5.4.0-1107-kvm 5.4.0-1107.114 linux-image-5.4.0-1118-oracle 5.4.0-1118.127 linux-image-5.4.0-1119-aws 5.4.0-1119.129 linux-image-5.4.0-1123-gcp 5.4.0-1123.132 linux-image-5.4.0-172-generic 5.4.0-172.190 linux-image-5.4.0-172-generic-lpae 5.4.0-172.190 linux-image-5.4.0-172-lowlatency 5.4.0-172.190 linux-image-aws-lts-20.04 5.4.0.1119.116 linux-image-bluefield 5.4.0.1079.74 linux-image-gcp-lts-20.04 5.4.0.1123.125 linux-image-generic 5.4.0.172.170 linux-image-generic-lpae 5.4.0.172.170 linux-image-gkeop 5.4.0.1086.84 linux-image-gkeop-5.4 5.4.0.1086.84 linux-image-ibm-lts-20.04 5.4.0.1066.95 linux-image-kvm 5.4.0.1107.103 linux-image-lowlatency 5.4.0.172.170 linux-image-oem 5.4.0.172.170 linux-image-oem-osp1 5.4.0.172.170 linux-image-oracle-lts-20.04 5.4.0.1118.111 linux-image-raspi 5.4.0.1103.133 linux-image-raspi2 5.4.0.1103.133 linux-image-virtual 5.4.0.172.170 linux-image-xilinx-zynqmp 5.4.0.1038.38Ubuntu 18.04 LTS (Available with Ubuntu Pro): linux-image-5.4.0-1066-ibm 5.4.0-1066.71~18.04.1 linux-image-5.4.0-1103-raspi 5.4.0-1103.115~18.04.1 linux-image-5.4.0-1118-oracle 5.4.0-1118.127~18.04.1 linux-image-5.4.0-1119-aws 5.4.0-1119.129~18.04.1 linux-image-5.4.0-172-generic 5.4.0-172.190~18.04.1 linux-image-5.4.0-172-lowlatency 5.4.0-172.190~18.04.1 linux-image-aws 5.4.0.1119.97 linux-image-generic-hwe-18.04 5.4.0.172.190~18.04.140 linux-image-ibm 5.4.0.1066.76 linux-image-lowlatency-hwe-18.04 5.4.0.172.190~18.04.140 linux-image-oem 5.4.0.172.190~18.04.140 linux-image-oem-osp1 5.4.0.172.190~18.04.140 linux-image-oracle 5.4.0.1118.127~18.04.90 linux-image-raspi-hwe-18.04 5.4.0.1103.100 linux-image-snapdragon-hwe-18.04 5.4.0.172.190~18.04.140 linux-image-virtual-hwe-18.04 5.4.0.172.190~18.04.140After 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-6648-1 CVE-2023-51781, CVE-2023-6915, CVE-2024-0565, CVE-2024-0646Package Information: https://launchpad.net/ubuntu/+source/linux/5.4.0-172.190 https://launchpad.net/ubuntu/+source/linux-aws/5.4.0-1119.129 https://launchpad.net/ubuntu/+source/linux-bluefield/5.4.0-1079.85 https://launchpad.net/ubuntu/+source/linux-gcp/5.4.0-1123.132 https://launchpad.net/ubuntu/+source/linux-gkeop/5.4.0-1086.90 https://launchpad.net/ubuntu/+source/linux-ibm/5.4.0-1066.71 https://launchpad.net/ubuntu/+source/linux-iot/5.4.0-1031.32 https://launchpad.net/ubuntu/+source/linux-kvm/5.4.0-1107.114 https://launchpad.net/ubuntu/+source/linux-oracle/5.4.0-1118.127 https://launchpad.net/ubuntu/+source/linux-raspi/5.4.0-1103.115 https://launchpad.net/ubuntu/+source/linux-xilinx-zynqmp/5.4.0-1038.42
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