发布于3月6日3月6日 Members Ubuntu: (Multiple Advisories) (CVE-2024-40976): Linux kernel vulnerabilities Severity 4 CVSS (AV:L/AC:M/Au:N/C:P/I:P/A:P) Published 07/12/2024 Created 09/13/2024 Added 09/12/2024 Modified 09/26/2024 Description In the Linux kernel, the following vulnerability has been resolved: drm/lima: mask irqs in timeout path before hard reset There is a race condition in which a rendering job might take just long enough to trigger the drm sched job timeout handler but also still complete before the hard reset is done by the timeout handler. This runs into race conditions not expected by the timeout handler. In some very specific cases it currently may result in a refcount imbalance on lima_pm_idle, with a stack dump such as: [10136.669170] WARNING: CPU: 0 PID: 0 at drivers/gpu/drm/lima/lima_devfreq.c:205 lima_devfreq_record_idle+0xa0/0xb0 ... [10136.669459] pc : lima_devfreq_record_idle+0xa0/0xb0 ... [10136.669628] Call trace: [10136.669634]lima_devfreq_record_idle+0xa0/0xb0 [10136.669646]lima_sched_pipe_task_done+0x5c/0xb0 [10136.669656]lima_gp_irq_handler+0xa8/0x120 [10136.669666]__handle_irq_event_percpu+0x48/0x160 [10136.669679]handle_irq_event+0x4c/0xc0 We can prevent that race condition entirely by masking the irqs at the beginning of the timeout handler, at which point we give up on waiting for that job entirely. The irqs will be enabled again at the next hard reset which is already done as a recovery by the timeout handler. Solution(s) ubuntu-upgrade-linux-image-5-15-0-1035-xilinx-zynqmp ubuntu-upgrade-linux-image-5-15-0-1052-gkeop ubuntu-upgrade-linux-image-5-15-0-1062-ibm ubuntu-upgrade-linux-image-5-15-0-1062-raspi ubuntu-upgrade-linux-image-5-15-0-1064-intel-iotg ubuntu-upgrade-linux-image-5-15-0-1064-nvidia ubuntu-upgrade-linux-image-5-15-0-1064-nvidia-lowlatency ubuntu-upgrade-linux-image-5-15-0-1066-gke ubuntu-upgrade-linux-image-5-15-0-1066-kvm ubuntu-upgrade-linux-image-5-15-0-1067-oracle ubuntu-upgrade-linux-image-5-15-0-1068-gcp ubuntu-upgrade-linux-image-5-15-0-1069-aws ubuntu-upgrade-linux-image-5-15-0-1072-azure ubuntu-upgrade-linux-image-5-15-0-1072-azure-fde ubuntu-upgrade-linux-image-5-15-0-121-generic ubuntu-upgrade-linux-image-5-15-0-121-generic-64k ubuntu-upgrade-linux-image-5-15-0-121-generic-lpae ubuntu-upgrade-linux-image-5-15-0-121-lowlatency ubuntu-upgrade-linux-image-5-15-0-121-lowlatency-64k ubuntu-upgrade-linux-image-6-8-0-1010-gke ubuntu-upgrade-linux-image-6-8-0-1011-raspi ubuntu-upgrade-linux-image-6-8-0-1012-ibm ubuntu-upgrade-linux-image-6-8-0-1012-oem ubuntu-upgrade-linux-image-6-8-0-1012-oracle ubuntu-upgrade-linux-image-6-8-0-1012-oracle-64k ubuntu-upgrade-linux-image-6-8-0-1013-nvidia ubuntu-upgrade-linux-image-6-8-0-1013-nvidia-64k ubuntu-upgrade-linux-image-6-8-0-1013-nvidia-lowlatency ubuntu-upgrade-linux-image-6-8-0-1013-nvidia-lowlatency-64k ubuntu-upgrade-linux-image-6-8-0-1014-azure ubuntu-upgrade-linux-image-6-8-0-1014-azure-fde ubuntu-upgrade-linux-image-6-8-0-1014-gcp ubuntu-upgrade-linux-image-6-8-0-1015-aws ubuntu-upgrade-linux-image-6-8-0-44-generic ubuntu-upgrade-linux-image-6-8-0-44-generic-64k ubuntu-upgrade-linux-image-6-8-0-44-lowlatency ubuntu-upgrade-linux-image-6-8-0-44-lowlatency-64k ubuntu-upgrade-linux-image-6-8-0-45-generic ubuntu-upgrade-linux-image-6-8-0-45-generic-64k ubuntu-upgrade-linux-image-aws ubuntu-upgrade-linux-image-aws-lts-22-04 ubuntu-upgrade-linux-image-azure ubuntu-upgrade-linux-image-azure-cvm ubuntu-upgrade-linux-image-azure-fde ubuntu-upgrade-linux-image-azure-fde-lts-22-04 ubuntu-upgrade-linux-image-azure-lts-22-04 ubuntu-upgrade-linux-image-gcp ubuntu-upgrade-linux-image-gcp-lts-22-04 ubuntu-upgrade-linux-image-generic ubuntu-upgrade-linux-image-generic-64k ubuntu-upgrade-linux-image-generic-64k-hwe-20-04 ubuntu-upgrade-linux-image-generic-64k-hwe-22-04 ubuntu-upgrade-linux-image-generic-64k-hwe-24-04 ubuntu-upgrade-linux-image-generic-hwe-20-04 ubuntu-upgrade-linux-image-generic-hwe-22-04 ubuntu-upgrade-linux-image-generic-hwe-24-04 ubuntu-upgrade-linux-image-generic-lpae ubuntu-upgrade-linux-image-generic-lpae-hwe-20-04 ubuntu-upgrade-linux-image-gke ubuntu-upgrade-linux-image-gke-5-15 ubuntu-upgrade-linux-image-gkeop ubuntu-upgrade-linux-image-gkeop-5-15 ubuntu-upgrade-linux-image-ibm ubuntu-upgrade-linux-image-ibm-classic ubuntu-upgrade-linux-image-ibm-lts-24-04 ubuntu-upgrade-linux-image-intel ubuntu-upgrade-linux-image-intel-iotg ubuntu-upgrade-linux-image-kvm ubuntu-upgrade-linux-image-lowlatency ubuntu-upgrade-linux-image-lowlatency-64k ubuntu-upgrade-linux-image-lowlatency-64k-hwe-20-04 ubuntu-upgrade-linux-image-lowlatency-64k-hwe-22-04 ubuntu-upgrade-linux-image-lowlatency-hwe-20-04 ubuntu-upgrade-linux-image-lowlatency-hwe-22-04 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-20-04 ubuntu-upgrade-linux-image-oem-20-04b ubuntu-upgrade-linux-image-oem-20-04c ubuntu-upgrade-linux-image-oem-20-04d ubuntu-upgrade-linux-image-oem-22-04 ubuntu-upgrade-linux-image-oem-22-04a ubuntu-upgrade-linux-image-oem-22-04b ubuntu-upgrade-linux-image-oem-22-04c ubuntu-upgrade-linux-image-oem-22-04d ubuntu-upgrade-linux-image-oracle ubuntu-upgrade-linux-image-oracle-64k ubuntu-upgrade-linux-image-oracle-lts-22-04 ubuntu-upgrade-linux-image-raspi ubuntu-upgrade-linux-image-raspi-nolpae ubuntu-upgrade-linux-image-virtual ubuntu-upgrade-linux-image-virtual-hwe-20-04 ubuntu-upgrade-linux-image-virtual-hwe-22-04 ubuntu-upgrade-linux-image-virtual-hwe-24-04 ubuntu-upgrade-linux-image-xilinx-zynqmp References https://attackerkb.com/topics/cve-2024-40976 CVE - 2024-40976 USN-6999-1 USN-6999-2 USN-7004-1 USN-7005-1 USN-7005-2 USN-7007-1 USN-7007-2 USN-7007-3 USN-7008-1 USN-7009-1 USN-7009-2 USN-7019-1 USN-7029-1 View more
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