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Ubuntu Security Notice USN-6922-2

Ubuntu Security Notice 6922-2 - It was discovered that a race condition existed in the Bluetooth subsystem in the Linux kernel when modifying certain settings values through debugfs. A privileged local attacker could use this to cause a denial of service. Chenyuan Yang discovered that the Unsorted Block Images flash device volume management subsystem did not properly validate logical eraseblock sizes in certain situations. An attacker could possibly use this to cause a denial of service.

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==========================================================================Ubuntu Security Notice USN-6922-2August 01, 2024linux-lowlatency-hwe-6.5 vulnerabilities==========================================================================A security issue affects these releases of Ubuntu and its derivatives:- Ubuntu 22.04 LTSSummary:Several security issues were fixed in the Linux kernel.Software Description:- linux-lowlatency-hwe-6.5: Linux low latency kernelDetails:It was discovered that a race condition existed in the Bluetooth subsystemin the Linux kernel when modifying certain settings values through debugfs.A privileged local attacker could use this to cause a denial of service.(CVE-2024-24857, CVE-2024-24858, CVE-2024-24859)Chenyuan Yang discovered that the Unsorted Block Images (UBI) flash devicevolume management subsystem did not properly validate logical eraseblocksizes in certain situations. An attacker could possibly use this to cause adenial of service (system crash). (CVE-2024-25739)Update instructions:The problem can be corrected by updating your system to the followingpackage versions:Ubuntu 22.04 LTS  linux-image-6.5.0-45-lowlatency  6.5.0-45.45.1~22.04.1  linux-image-6.5.0-45-lowlatency-64k  6.5.0-45.45.1~22.04.1  linux-image-lowlatency-64k-hwe-22.04  6.5.0.45.45.1~22.04.1  linux-image-lowlatency-hwe-22.04  6.5.0.45.45.1~22.04.1After 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-6922-2  https://ubuntu.com/security/notices/USN-6922-1  CVE-2024-24857, CVE-2024-24858, CVE-2024-24859, CVE-2024-25739Package Information:  https://launchpad.net/ubuntu/+source/linux-lowlatency-hwe-6.5/6.5.0-45.45.1~22.04.1

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