发布于3月6日3月6日 Members Ubuntu: (Multiple Advisories) (CVE-2024-36000): 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: mm/hugetlb: fix missing hugetlb_lock for resv uncharge There is a recent report on UFFDIO_COPY over hugetlb: https://lore.kernel.org/all/[email protected]/ 350: lockdep_assert_held(&hugetlb_lock); Should be an issue in hugetlb but triggered in an userfault context, where it goes into the unlikely path where two threads modifying the resv map together.Mike has a fix in that path for resv uncharge but it looks like the locking criteria was overlooked: hugetlb_cgroup_uncharge_folio_rsvd() will update the cgroup pointer, so it requires to be called with the lock held. 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-2024-36000 CVE - 2024-36000 USN-6949-1 USN-6949-2 USN-6952-1 USN-6952-2 USN-6955-1
