Ubuntu alert USN-6250-1 (linux, linux-aws, linux-azure, linux-gcp, linux-ibm, linux-kvm, linux-lowlatency, linux-oracle, linux-raspi)
| From: | Rodrigo Figueiredo Zaiden <rodrigo.zaiden@canonical.com> | |
| To: | ubuntu-security-announce@lists.ubuntu.com | |
| Subject: | [USN-6250-1] Linux kernel vulnerabilities | |
| Date: | Tue, 25 Jul 2023 21:03:01 -0300 | |
| Message-ID: | <a64b6dd5-9fff-b67e-c5e0-2c5e0ea52a88@canonical.com> |
========================================================================== Ubuntu Security Notice USN-6250-1 July 25, 2023 linux, linux-aws, linux-azure, linux-gcp, linux-ibm, linux-kvm, linux-lowlatency, linux-oracle, linux-raspi vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 23.04 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-gcp: Linux kernel for Google Cloud Platform (GCP) systems - linux-ibm: Linux kernel for IBM cloud systems - 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 Details: Stonejiajia, Shir Tamari and Sagi Tzadik discovered that the OverlayFS implementation in the Ubuntu Linux kernel did not properly perform permission checks in certain situations. A local attacker could possibly use this to gain elevated privileges. (CVE-2023-2640) It was discovered that the IP-VLAN network driver for the Linux kernel did not properly initialize memory in some situations, leading to an out-of- bounds write vulnerability. An attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2023-3090) Mingi Cho discovered that the netfilter subsystem in the Linux kernel did not properly validate the status of a nft chain while performing a lookup by id, leading to a use-after-free vulnerability. An attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2023-31248) Shir Tamari and Sagi Tzadik discovered that the OverlayFS implementation in the Ubuntu Linux kernel did not properly perform permission checks in certain situations. A local attacker could possibly use this to gain elevated privileges. (CVE-2023-32629) Ruihan Li discovered that the memory management subsystem in the Linux kernel contained a race condition when accessing VMAs in certain conditions, leading to a use-after-free vulnerability. A local attacker could possibly use this to cause a denial of service (system crash) or execute arbitrary code. (CVE-2023-3269) Querijn Voet discovered that a race condition existed in the io_uring 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-2023-3389) It was discovered that the netfilter subsystem in the Linux kernel did not properly handle some error conditions, 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-2023-3390) Tanguy Dubroca discovered that the netfilter subsystem in the Linux kernel did not properly handle certain pointer data type, leading to an out-of- bounds write vulnerability. A privileged attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2023-35001) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 23.04: linux-image-6.2.0-1006-ibm 6.2.0-1006.6 linux-image-6.2.0-1008-aws 6.2.0-1008.8 linux-image-6.2.0-1008-azure 6.2.0-1008.8 linux-image-6.2.0-1008-oracle 6.2.0-1008.8 linux-image-6.2.0-1009-kvm 6.2.0-1009.9 linux-image-6.2.0-1009-lowlatency 6.2.0-1009.9 linux-image-6.2.0-1009-lowlatency-64k 6.2.0-1009.9 linux-image-6.2.0-1009-raspi 6.2.0-1009.11 linux-image-6.2.0-1010-gcp 6.2.0-1010.10 linux-image-6.2.0-26-generic 6.2.0-26.26 linux-image-6.2.0-26-generic-64k 6.2.0-26.26 linux-image-6.2.0-26-generic-lpae 6.2.0-26.26 linux-image-aws 6.2.0.1008.9 linux-image-azure 6.2.0.1008.8 linux-image-gcp 6.2.0.1010.10 linux-image-generic 6.2.0.26.26 linux-image-generic-64k 6.2.0.26.26 linux-image-generic-lpae 6.2.0.26.26 linux-image-ibm 6.2.0.1006.6 linux-image-kvm 6.2.0.1009.9 linux-image-lowlatency 6.2.0.1009.9 linux-image-lowlatency-64k 6.2.0.1009.9 linux-image-oracle 6.2.0.1008.8 linux-image-raspi 6.2.0.1009.12 linux-image-raspi-nolpae 6.2.0.1009.12 linux-image-virtual 6.2.0.26.26 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-6250-1 CVE-2023-2640, CVE-2023-3090, CVE-2023-31248, CVE-2023-32629, CVE-2023-3269, CVE-2023-3389, CVE-2023-3390, CVE-2023-35001 Package Information: https://launchpad.net/ubuntu/+source/linux/6.2.0-26.26 https://launchpad.net/ubuntu/+source/linux-aws/6.2.0-1008.8 https://launchpad.net/ubuntu/+source/linux-azure/6.2.0-10... https://launchpad.net/ubuntu/+source/linux-gcp/6.2.0-1010.10 https://launchpad.net/ubuntu/+source/linux-ibm/6.2.0-1006.6 https://launchpad.net/ubuntu/+source/linux-kvm/6.2.0-1009.9 https://launchpad.net/ubuntu/+source/linux-lowlatency/6.2... https://launchpad.net/ubuntu/+source/linux-oracle/6.2.0-1... https://launchpad.net/ubuntu/+source/linux-raspi/6.2.0-10...