发布于3月6日3月6日 Members Ubuntu: (Multiple Advisories) (CVE-2024-35996): Linux kernel vulnerabilities Severity 4 CVSS (AV:L/AC:M/Au:N/C:P/I:P/A:P) Published 05/20/2024 Created 08/10/2024 Added 08/09/2024 Modified 01/23/2025 Description In the Linux kernel, the following vulnerability has been resolved: cpu: Re-enable CPU mitigations by default for !X86 architectures Rename x86's to CPU_MITIGATIONS, define it in generic code, and force it on for all architectures exception x86.A recent commit to turn mitigations off by default if SPECULATION_MITIGATIONS=n kinda sorta missed that "cpu_mitigations" is completely generic, whereas SPECULATION_MITIGATIONS is x86-specific. Rename x86's SPECULATIVE_MITIGATIONS instead of keeping both and have it select CPU_MITIGATIONS, as having two configs for the same thing is unnecessary and confusing.This will also allow x86 to use the knob to manage mitigations that aren't strictly related to speculative execution. Use another Kconfig to communicate to common code that CPU_MITIGATIONS is already defined instead of having x86's menu depend on the common CPU_MITIGATIONS.This allows keeping a single point of contact for all of x86's mitigations, and it's not clear that other architectures *want* to allow disabling mitigations at compile-time. Solution(s) ubuntu-upgrade-linux-image-6-8-0-1008-gke ubuntu-upgrade-linux-image-6-8-0-1009-raspi ubuntu-upgrade-linux-image-6-8-0-1010-ibm ubuntu-upgrade-linux-image-6-8-0-1010-oem ubuntu-upgrade-linux-image-6-8-0-1010-oracle ubuntu-upgrade-linux-image-6-8-0-1010-oracle-64k ubuntu-upgrade-linux-image-6-8-0-1011-nvidia ubuntu-upgrade-linux-image-6-8-0-1011-nvidia-64k ubuntu-upgrade-linux-image-6-8-0-1011-nvidia-lowlatency ubuntu-upgrade-linux-image-6-8-0-1011-nvidia-lowlatency-64k ubuntu-upgrade-linux-image-6-8-0-1012-azure ubuntu-upgrade-linux-image-6-8-0-1012-azure-fde ubuntu-upgrade-linux-image-6-8-0-1012-gcp ubuntu-upgrade-linux-image-6-8-0-1013-aws ubuntu-upgrade-linux-image-6-8-0-40-generic ubuntu-upgrade-linux-image-6-8-0-40-generic-64k ubuntu-upgrade-linux-image-6-8-0-40-lowlatency ubuntu-upgrade-linux-image-6-8-0-40-lowlatency-64k ubuntu-upgrade-linux-image-aws ubuntu-upgrade-linux-image-azure ubuntu-upgrade-linux-image-azure-fde ubuntu-upgrade-linux-image-gcp ubuntu-upgrade-linux-image-generic ubuntu-upgrade-linux-image-generic-64k ubuntu-upgrade-linux-image-generic-64k-hwe-24-04 ubuntu-upgrade-linux-image-generic-hwe-24-04 ubuntu-upgrade-linux-image-generic-lpae ubuntu-upgrade-linux-image-gke ubuntu-upgrade-linux-image-ibm ubuntu-upgrade-linux-image-ibm-classic ubuntu-upgrade-linux-image-ibm-lts-24-04 ubuntu-upgrade-linux-image-kvm ubuntu-upgrade-linux-image-lowlatency ubuntu-upgrade-linux-image-lowlatency-64k ubuntu-upgrade-linux-image-nvidia ubuntu-upgrade-linux-image-nvidia-6-8 ubuntu-upgrade-linux-image-nvidia-64k ubuntu-upgrade-linux-image-nvidia-64k-6-8 ubuntu-upgrade-linux-image-nvidia-lowlatency ubuntu-upgrade-linux-image-nvidia-lowlatency-64k ubuntu-upgrade-linux-image-oem-24-04 ubuntu-upgrade-linux-image-oem-24-04a ubuntu-upgrade-linux-image-oracle ubuntu-upgrade-linux-image-oracle-64k ubuntu-upgrade-linux-image-raspi ubuntu-upgrade-linux-image-virtual ubuntu-upgrade-linux-image-virtual-hwe-24-04 References https://attackerkb.com/topics/cve-2024-35996 CVE - 2024-35996 USN-6949-1 USN-6949-2 USN-6952-1 USN-6952-2 USN-6955-1
