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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2021.3867 USN-5140-1: Linux kernel (OEM 5.14) vulnerabilities 12 November 2021 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Linux Kernel (OEM) Publisher: Ubuntu Operating System: Ubuntu Impact/Access: Execute Arbitrary Code/Commands -- Existing Account Denial of Service -- Existing Account Access Confidential Data -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2021-43389 CVE-2021-43056 CVE-2021-41864 CVE-2021-3764 CVE-2021-3760 CVE-2021-3744 CVE-2021-3655 Reference: ESB-2021.3839 ESB-2021.3743 ESB-2021.3480 Original Bulletin: https://ubuntu.com/security/notices/USN-5140-1 https://ubuntu.com/security/notices/USN-5139-1 Comment: This bulletin contains two (2) Ubuntu security advisories. - --------------------------BEGIN INCLUDED TEXT-------------------- USN-5140-1: Linux kernel (OEM 5.14) vulnerabilities 11 November 2021 Several security issues were fixed in the Linux kernel. Releases o Ubuntu 20.04 LTS Packages o linux-oem-5.14 - Linux kernel for OEM systems Details It was discovered that the AMD Cryptographic Coprocessor (CCP) driver in the Linux kernel did not properly deallocate memory in some error conditions. A local attacker could use this to cause a denial of service (memory exhaustion). ( CVE-2021-3744 , CVE-2021-3764 ) It was discovered that an integer overflow could be triggered in the eBPF implementation in the Linux kernel when preallocating objects for stack maps. A privileged local attacker could use this to cause a denial of service or possibly execute arbitrary code. ( CVE-2021-41864 ) Update instructions The problem can be corrected by updating your system to the following package versions: Ubuntu 20.04 o linux-image-oem-20.04d - 5.14.0.1007.7 o linux-image-5.14.0-1007-oem - 5.14.0-1007.7 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 o CVE-2021-3764 o CVE-2021-41864 o CVE-2021-3744 Related notices o USN-5139-1 : linux-image-oem-20.04, linux-oem-5.10-tools-5.10.0-1051, linux-buildinfo-5.10.0-1051-oem, linux-headers-oem-20.04b, linux-headers-oem-20.04-edge, linux-image-oem-20.04-edge, linux-tools-5.10.0-1051-oem, linux-oem-20.04b, linux-tools-oem-20.04b, linux-oem-20.04-edge, linux-tools-oem-20.04-edge, linux-tools-oem-20.04, linux-headers-5.10.0-1051-oem, linux-headers-oem-20.04, linux-image-5.10.0-1051-oem, linux-oem-5.10, linux-modules-5.10.0-1051-oem, linux-oem-20.04, linux-oem-5.10-headers-5.10.0-1051, linux-image-oem-20.04b, linux-oem-5.10-tools-host, linux-image-unsigned-5.10.0-1051-oem - -------------------------------------------------------------------------------- USN-5139-1: Linux kernel (OEM 5.10) vulnerabilities 11 November 2021 Several security issues were fixed in the Linux kernel. Releases o Ubuntu 20.04 LTS Packages o linux-oem-5.10 - Linux kernel for OEM systems Details Ilja Van Sprundel discovered that the SCTP implementation in the Linux kernel did not properly perform size validations on incoming packets in some situations. An attacker could possibly use this to expose sensitive information (kernel memory). ( CVE-2021-3655 ) It was discovered that the AMD Cryptographic Coprocessor (CCP) driver in the Linux kernel did not properly deallocate memory in some error conditions. A local attacker could use this to cause a denial of service (memory exhaustion). ( CVE-2021-3744 , CVE-2021-3764 ) It was discovered that the NFC protocol implementation in the Linux kernel contained a use-after-free vulnerability in its NFC Controller Interface (NCI) implementation. A local attacker could possibly use this to cause a denial of service (system crash) or execute arbitrary code. ( CVE-2021-3760 ) It was discovered that an integer overflow could be triggered in the eBPF implementation in the Linux kernel when preallocating objects for stack maps. A privileged local attacker could use this to cause a denial of service or possibly execute arbitrary code. ( CVE-2021-41864 ) It was discovered that the KVM implementation for POWER8 processors in the Linux kernel did not properly keep track if a wakeup event could be resolved by a guest. An attacker in a guest VM could possibly use this to cause a denial of service (host OS crash). ( CVE-2021-43056 ) It was discovered that the ISDN CAPI implementation in the Linux kernel contained a race condition in certain situations that could trigger an array out-of-bounds bug. A privileged local attacker could possibly use this to cause a denial of service or execute arbitrary code. ( CVE-2021-43389 ) Update instructions The problem can be corrected by updating your system to the following package versions: Ubuntu 20.04 o linux-image-oem-20.04b - 5.10.0.1051.53 o linux-image-oem-20.04 - 5.10.0.1051.53 o linux-image-5.10.0-1051-oem - 5.10.0-1051.53 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 o CVE-2021-43056 o CVE-2021-43389 o CVE-2021-3760 o CVE-2021-3764 o CVE-2021-3655 o CVE-2021-3744 o CVE-2021-41864 Related notices o USN-5140-1 : linux-tools-oem-20.04d, linux-headers-5.14.0-1007-oem, linux-image-5.14.0-1007-oem, linux-modules-5.14.0-1007-oem, linux-oem-5.14-tools-host, linux-buildinfo-5.14.0-1007-oem, linux-headers-oem-20.04d, linux-tools-5.14.0-1007-oem, linux-oem-5.14, linux-oem-20.04d, linux-oem-5.14-tools-5.14.0-1007, linux-image-unsigned-5.14.0-1007-oem, linux-oem-5.14-headers-5.14.0-1007, linux-image-oem-20.04d o USN-5136-1 : linux-signed-image-lowlatency-hwe-16.04-edge, linux-oem, linux-headers-azure, linux-headers-gke, linux-tools-generic-hwe-16.04, linux-azure-tools-4.15.0-1126, linux-headers-virtual, linux-image-4.15.0-162-lowlatency, linux-signed-image-generic-hwe-16.04-edge, linux-hwe, linux-signed-generic-hwe-16.04, linux-modules-extra-azure, linux-image-azure-edge, linux-signed-oracle, linux-tools-gke, linux-headers-4.15.0-1102-kvm, linux-signed-oem, linux-cloud-tools-generic-hwe-16.04, linux-tools-gcp, linux-image-lowlatency, linux-headers-snapdragon, linux-headers-generic-lpae-hwe-16.04-edge, linux-headers-4.15.0-162-generic, linux-signed-lowlatency-hwe-16.04-edge, linux-gcp-lts-18.04, linux-headers-generic-lpae-hwe-16.04, linux-tools-4.15.0-1098-raspi2, linux-image-virtual-hwe-16.04-edge, linux-lowlatency-hwe-16.04, linux-snapdragon-tools-4.15.0-1115, linux-modules-4.15.0-1126-azure, linux-tools-4.15.0-1102-kvm, linux-image-azure, linux-dell300x-headers-4.15.0-1030, linux-image-raspi2, linux-tools-aws-hwe, linux-azure-edge, linux-image-4.15.0-1102-kvm, linux-snapdragon, linux-kvm-headers-4.15.0-1102, linux-headers-virtual-hwe-16.04-edge, linux-tools-4.15.0-1083-oracle, linux-headers-oracle, linux-tools-azure-edge, linux-headers-kvm, linux-lowlatency, linux-cloud-tools-azure-edge, linux-oracle, linux-azure-4.15-tools-4.15.0-1126, linux-buildinfo-4.15.0-1083-oracle, linux-modules-extra-aws-hwe, linux-image-kvm, linux-headers-virtual-hwe-16.04, linux-tools-oracle-lts-18.04, linux-virtual, linux-image-oracle, linux, linux-image-gcp-lts-18.04, linux-image-unsigned-4.15.0-1030-dell300x, linux-gcp-4.15-tools-4.15.0-1111, linux-generic-hwe-16.04-edge, linux-headers-raspi2, linux-image-azure-lts-18.04, linux-signed-azure-edge, linux-image-dell300x, linux-signed-image-azure-edge, linux-signed-image-azure-lts-18.04, linux-source, linux-headers-oracle-lts-18.04, linux-modules-extra-4.15.0-1126-azure, linux-tools-4.15.0-1115-aws, linux-modules-extra-gcp, linux-tools-4.15.0-162-generic-lpae, linux-tools-4.15.0-162-lowlatency, linux-dell300x-tools-4.15.0-1030, linux-image-gcp, linux-signed-image-oracle, linux-generic-lpae, linux-cloud-tools-azure-lts-18.04, linux-headers-gcp, linux-azure-4.15, linux-signed-image-azure, linux-tools-4.15.0-1126-azure, linux-image-unsigned-4.15.0-1083-oracle, linux-image-4.15.0-162-generic-lpae, linux-modules-extra-azure-lts-18.04, linux-azure-4.15-cloud-tools-4.15.0-1126, linux-tools-common, linux-image-unsigned-4.15.0-1111-gcp, linux-headers-aws-hwe, linux-aws-lts-18.04, linux-buildinfo-4.15.0-1111-gcp, linux-headers-aws-lts-18.04, linux-buildinfo-4.15.0-1030-dell300x, linux-kvm-tools-4.15.0-1102, linux-image-oracle-lts-18.04, linux-cloud-tools-generic-hwe-16.04-edge, linux-gcp-tools-4.15.0-1111, linux-aws-tools-4.15.0-1115, linux-signed-generic, linux-doc, linux-tools-raspi2, linux-signed-azure, linux-tools-snapdragon, linux-signed-lowlatency, linux-image-aws-lts-18.04, linux-headers-generic-lpae, linux-aws-hwe, linux-aws-hwe-tools-4.15.0-1115, linux-cloud-tools-azure, linux-tools-azure, linux-cloud-tools-4.15.0-162-lowlatency, linux-cloud-tools-lowlatency-hwe-16.04, linux-modules-4.15.0-1115-snapdragon, linux-virtual-hwe-16.04-edge, linux-hwe-tools-4.15.0-162, linux-image-generic-lpae-hwe-16.04-edge, linux-oracle-lts-18.04, linux-signed-image-oracle-lts-18.04, linux-image-extra-virtual-hwe-16.04, linux-tools-oem, linux-cloud-tools-4.15.0-162, linux-buildinfo-4.15.0-1102-kvm, linux-headers-generic, linux-image-unsigned-4.15.0-1126-azure, linux-cloud-tools-lowlatency, linux-image-4.15.0-1126-azure, linux-azure-cloud-tools-4.15.0-1126, linux-headers-lowlatency-hwe-16.04-edge, linux-modules-4.15.0-1115-aws, linux-cloud-tools-virtual-hwe-16.04-edge, linux-headers-gcp-lts-18.04, linux-headers-generic-hwe-16.04-edge, linux-buildinfo-4.15.0-162-generic, linux-image-4.15.0-1098-raspi2, linux-image-extra-virtual-hwe-16.04-edge, linux-headers-4.15.0-1083-oracle, linux-image-4.15.0-1083-oracle, linux-signed-oracle-lts-18.04, linux-image-lowlatency-hwe-16.04, linux-headers-4.15.0-162, linux-azure, linux-modules-extra-4.15.0-1083-oracle, linux-dell300x, linux-headers-4.15.0-1126-azure, linux-headers-dell300x, linux-headers-4.15.0-162-lowlatency, linux-buildinfo-4.15.0-1098-raspi2, linux-gcp-headers-4.15.0-1111, linux-headers-4.15.0-1115-aws, linux-image-4.15.0-162-generic, linux-headers-4.15.0-1098-raspi2, linux-image-snapdragon, linux-modules-4.15.0-162-generic, linux-signed-lowlatency-hwe-16.04, linux-tools-kvm, linux-tools-lowlatency-hwe-16.04-edge, linux-generic, linux-modules-extra-4.15.0-1111-gcp, linux-modules-extra-azure-edge, linux-signed-image-oem, linux-image-generic, linux-aws-edge, linux-tools-gcp-lts-18.04, linux-tools-generic-lpae, linux-image-generic-lpae-hwe-16.04, linux-raspi2-headers-4.15.0-1098, linux-modules-extra-gke, linux-signed-image-generic-hwe-16.04, linux-headers-azure-edge, linux-cloud-tools-generic, linux-headers-4.15.0-1111-gcp, linux-cloud-tools-lowlatency-hwe-16.04-edge, linux-cloud-tools-virtual, linux-azure-lts-18.04, linux-lowlatency-hwe-16.04-edge, linux-modules-4.15.0-1098-raspi2, linux-image-extra-virtual, linux-image-lowlatency-hwe-16.04-edge, linux-tools-oracle, linux-tools-virtual-hwe-16.04, linux-raspi2-tools-4.15.0-1098, linux-image-oem, linux-kvm, linux-headers-lowlatency, linux-tools-4.15.0-1030-dell300x, linux-buildinfo-4.15.0-162-generic-lpae, linux-tools-aws-lts-18.04, linux-tools-lowlatency-hwe-16.04, linux-oracle-headers-4.15.0-1083, linux-aws, linux-crashdump, linux-headers-azure-lts-18.04, linux-signed-azure-lts-18.04, linux-cloud-tools-virtual-hwe-16.04, linux-azure-headers-4.15.0-1126, linux-cloud-tools-4.15.0-162-generic, linux-cloud-tools-4.15.0-1126-azure, linux-tools-4.15.0-162, linux-headers-generic-hwe-16.04, linux-raspi2, linux-image-4.15.0-1115-snapdragon, linux-generic-lpae-hwe-16.04-edge, linux-libc-dev, linux-aws-headers-4.15.0-1115, linux-aws-hwe-cloud-tools-4.15.0-1115, linux-modules-extra-gcp-lts-18.04, linux-signed-generic-hwe-16.04-edge, linux-tools-dell300x, linux-buildinfo-4.15.0-162-lowlatency, linux-generic-lpae-hwe-16.04, linux-virtual-hwe-16.04, linux-signed-image-lowlatency-hwe-16.04, linux-image-aws-hwe, linux-signed-image-lowlatency, linux-image-4.15.0-1030-dell300x, linux-tools-4.15.0-1115-snapdragon, linux-oracle-tools-4.15.0-1083, linux-modules-extra-4.15.0-1115-aws, linux-image-unsigned-4.15.0-162-generic, linux-tools-4.15.0-1111-gcp, linux-tools-generic-lpae-hwe-16.04, linux-tools-lowlatency, linux-modules-extra-4.15.0-162-generic, linux-image-4.15.0-1115-aws, linux-buildinfo-4.15.0-1115-snapdragon, linux-snapdragon-headers-4.15.0-1115, linux-modules-4.15.0-1030-dell300x, linux-hwe-cloud-tools-4.15.0-162, linux-image-generic-hwe-16.04, linux-image-gke, linux-image-virtual-hwe-16.04, linux-tools-generic, linux-modules-4.15.0-1083-oracle, linux-source-4.15.0, linux-tools-generic-hwe-16.04-edge, linux-gcp-4.15, linux-headers-4.15.0-1115-snapdragon, linux-tools-generic-lpae-hwe-16.04-edge, linux-headers-4.15.0-1030-dell300x, linux-tools-azure-lts-18.04, linux-headers-lowlatency-hwe-16.04, linux-tools-host, linux-headers-4.15.0-162-generic-lpae, linux-image-virtual, linux-modules-extra-aws-lts-18.04, linux-cloud-tools-common, linux-headers-oem, linux-image-4.15.0-1111-gcp, linux-modules-4.15.0-1102-kvm, linux-gcp-4.15-headers-4.15.0-1111, linux-tools-4.15.0-162-generic, linux-gcp, linux-modules-4.15.0-162-generic-lpae, linux-image-generic-lpae, linux-cloud-tools-4.15.0-1115-aws, linux-gke, linux-image-unsigned-4.15.0-162-lowlatency, linux-signed-image-generic, linux-aws-cloud-tools-4.15.0-1115, linux-buildinfo-4.15.0-1126-azure, linux-image-generic-hwe-16.04-edge, linux-azure-4.15-headers-4.15.0-1126, linux-generic-hwe-16.04, linux-tools-virtual-hwe-16.04-edge, linux-buildinfo-4.15.0-1115-aws, linux-modules-4.15.0-1111-gcp, linux-modules-4.15.0-162-lowlatency, linux-tools-virtual - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. 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It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: https://www.auscert.org.au/bulletins/ =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBYY25CuNLKJtyKPYoAQhoDg/+MijDbrjMmlCcH+sqgC5zrFhEdSyjZZwq tc4LaiFFPlsuBB9PkJ5iknVQvNX6mfV+JObhR+/FaeOPEooJUg/4wJbyqZtLwWVe 9c0BH0bleN7k9BN2FDPVYQwEjCneTG+6F2usE54gwSEo9YOju6KBBlB3NexhFj18 VqrfkcO/IKcK1ECr3vj80l01NzM/sPxnP1/n2eS7Rl3tIlUe8K8Q9A6OnAJ9FrZk ExCYtni35SUPZ+WUyvNN/yoqqSVqf5UtlvV59ZASE4tlcW3rYgv5/Kv0aWQWvFy7 KZZsmwWxYnMDS3cqS4LlVy6HHxmm6pBzRcF2lmXoWHgl1Dvx/idDS9By0tt4Iu06 XX/En6JRryyxUSOh03pPuuF7t4o3R1Wxo2UVKSHC9k3qohzmqqhf8XqSsM0zJsjS 9hpF+mJxJ7O3diVMyt599p1D8mhSTtecGH+xjG+EQZhatJyEi2SNkr6ahXzxhxb7 JnIjl/tsT+n1+wzINPU2sBXyNLuc9Tg6N53UPOg8bK3kFQkzFJzyg0rbHoJ4+8lm IS8cnyOScDcemYDQP4zqes/q18cPX5puRcISzBsjmE0Cv2ueHP5rhwMkDQKQ3Qtv +jc7u3v4st3mMDuw8wce22vH2ngu6BQmc0uodqwF7EkC2QLIQnE1jcn9ya7PE1Mr 8mhvxZr9r0A= =wun4 -----END PGP SIGNATURE-----