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Ubuntu 20.04 LTS: USN-6957-1 Critical: Kernel WeSee Flaw Exploit

Several security issues were fixed in the Linux kernel.. ========================================================================== Ubuntu Security Notice USN-6957-1 August 13, 2024 linux-oracle-5.15 vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 20.04 LTS Summary: Several security issues were fixed in the Linux kernel. Software Description: - linux-oracle-5.15: Linux kernel for Oracle Cloud systems Details: Benedict Schlüter, Supraja Sridhara, Andrin Bertschi, and Shweta Shinde discovered that an untrusted hypervisor could inject malicious #VC interrupts and compromise the security guarantees of AMD SEV-SNP. This flaw is known as WeSee. A local attacker in control of the hypervisor could use this to expose sensitive information or possibly execute arbitrary code in the trusted execution environment. (CVE-2024-25742) Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - ARM32 architecture; - ARM64 architecture; - Block layer subsystem; - Bluetooth drivers; - Clock framework and drivers; - FireWire subsystem; - GPU drivers; - InfiniBand drivers; - Multiple devices driver; - EEPROM drivers; - Network drivers; - Pin controllers subsystem; - Remote Processor subsystem; - S/390 drivers; - SCSI drivers; - TTY drivers; - 9P distributed file system; - Network file system client; - SMB network file system; - Socket messages infrastructure; - Dynamic debug library; - Bluetooth subsystem; - Networking core; - IPv4 networking; - IPv6 networking; - Multipath TCP; - Netfilter; - NSH protocol; - Phonet protocol; - TIPC protocol; - Wireless networking; - Key management; - ALSA framework; - HD-audio driver; (CVE-2024-36947, CVE-2024-36919, CVE-2024-36929,CVE-2024-36955, CVE-2023-52585, CVE-2024-36931, CVE-2024-27399, CVE-2024-36957, CVE-2024-26980, CVE-2024-27398, CVE-2024-36902, CVE-2024-36928, CVE-2024-36960, CVE-2024-36904, CVE-2024-27017, CVE-2024-36959, CVE-2024-36880, CVE-2024-26936, CVE-2024-36975, CVE-2023-52882, CVE-2024-35848, CVE-2024-36886, CVE-2024-36889, CVE-2024-27401, CVE-2024-36906, CVE-2024-36937, CVE-2024-36016, CVE-2024-36964, CVE-2024-36933, CVE-2024-36031, CVE-2024-36969, CVE-2024-36954, CVE-2024-26900, CVE-2024-26952, CVE-2024-36017, CVE-2024-35947, CVE-2024-36965, CVE-2023-52752, CVE-2024-36905, CVE-2024-36938, CVE-2024-36952, CVE-2024-36940, CVE-2024-36916, CVE-2024-38600, CVE-2024-36946, CVE-2024-36953, CVE-2024-36967, CVE-2024-26886, CVE-2024-36934, CVE-2024-36950, CVE-2024-36941, CVE-2024-36883, CVE-2024-36944, CVE-2024-36939, CVE-2024-36897) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 20.04 LTS linux-image-5.15.0-1065-oracle 5.15.0-1065.71~20.04.1 linux-image-oracle 5.15.0.1065.71~20.04.1 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-6957-1 CVE-2023-52585, CVE-2023-52752, CVE-2023-52882, CVE-2024-25742, CVE-2024-26886, CVE-2024-26900, CVE-2024-26936, CVE-2024-26952, CVE-2024-26980, CVE-2024-27017, CVE-2024-27398, CVE-2024-27399, CVE-2024-27401, CVE-2024-35848, CVE-2024-35947, CVE-2024-36016, CVE-2024-36017, CVE-2024-36031, CVE-2024-36880, CVE-2024-36883, CVE-2024-36886, CVE-2024-36889, CVE-2024-36897,CVE-2024-36902, CVE-2024-36904, CVE-2024-36905, CVE-2024-36906, CVE-2024-36916, CVE-2024-36919, CVE-2024-36928, CVE-2024-36929, CVE-2024-36931, CVE-2024-36933, CVE-2024-36934, CVE-2024-36937, CVE-2024-36938, CVE-2024-36939, CVE-2024-36940, CVE-2024-36941, CVE-2024-36944, CVE-2024-36946, CVE-2024-36947, CVE-2024-36950, CVE-2024-36952, CVE-2024-36953, CVE-2024-36954, CVE-2024-36955, CVE-2024-36957, CVE-2024-36959, CVE-2024-36960, CVE-2024-36964, CVE-2024-36965, CVE-2024-36967, CVE-2024-36969, CVE-2024-36975, CVE-2024-38600 Package Information: https://launchpad.net/ubuntu/+source/linux-oracle-5.15/5.15.0-1065.71~20.04.1 . Revisions for Ubuntu 20.04 LTS rectify various kernel vulnerabilities, improving defense mechanisms against potential threats.. Linux Kernel Updates, Ubuntu Security Notice, Hypervisor Issues, Oracle Cloud Systems, Security Fixes. . Severity: Critical. LinuxSecurity.com Team

Aug 13, 2024 •Critical Ubuntu