Ubuntu: (Multiple Advisories) (CVE-2024-36969): Linux kernel vulnerabilities

Ubuntu: (Multiple Advisories) (CVE-2024-36969): Linux kernel vulnerabilities

Severity

5

CVSS

(AV:L/AC:L/Au:S/C:N/I:N/A:C)

Published

06/08/2024

Created

08/10/2024

Added

08/09/2024

Modified

01/28/2025

Description

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Fix division by zero in setup_dsc_config When slice_height is 0, the division by slice_height in the calculation of the number of slices will cause a division by zero driver crash. This leaves the kernel in a state that requires a reboot. This patch adds a check to avoid the division by zero. The stack trace below is for the 6.8.4 Kernel. I reproduced the issue on a Z16 Gen 2 Lenovo Thinkpad with a Apple Studio Display monitor connected via Thunderbolt. The amdgpu driver crashed with this exception when I rebooted the system with the monitor connected. kernel: ? die (arch/x86/kernel/dumpstack.c:421 arch/x86/kernel/dumpstack.c:434 arch/x86/kernel/dumpstack.c:447) kernel: ? do_trap (arch/x86/kernel/traps.c:113 arch/x86/kernel/traps.c:154) kernel: ? setup_dsc_config (drivers/gpu/drm/amd/amdgpu/../display/dc/dsc/dc_dsc.c:1053) amdgpu kernel: ? do_error_trap (./arch/x86/include/asm/traps.h:58 arch/x86/kernel/traps.c:175) kernel: ? setup_dsc_config (drivers/gpu/drm/amd/amdgpu/../display/dc/dsc/dc_dsc.c:1053) amdgpu kernel: ? exc_divide_error (arch/x86/kernel/traps.c:194 (discriminator 2)) kernel: ? setup_dsc_config (drivers/gpu/drm/amd/amdgpu/../display/dc/dsc/dc_dsc.c:1053) amdgpu kernel: ? asm_exc_divide_error (./arch/x86/include/asm/idtentry.h:548) kernel: ? setup_dsc_config (drivers/gpu/drm/amd/amdgpu/../display/dc/dsc/dc_dsc.c:1053) amdgpu kernel: dc_dsc_compute_config (drivers/gpu/drm/amd/amdgpu/../display/dc/dsc/dc_dsc.c:1109) amdgpu After applying this patch, the driver no longer crashes when the monitor is connected and the system is rebooted. I believe this is the same issue reported for 3113.

Solution(s)

• ubuntu-upgrade-linux-image-5-15-0-1035-xilinx-zynqmp
• ubuntu-upgrade-linux-image-5-15-0-1050-gkeop
• ubuntu-upgrade-linux-image-5-15-0-1060-ibm
• ubuntu-upgrade-linux-image-5-15-0-1060-raspi
• ubuntu-upgrade-linux-image-5-15-0-1062-intel-iotg
• ubuntu-upgrade-linux-image-5-15-0-1062-nvidia
• ubuntu-upgrade-linux-image-5-15-0-1062-nvidia-lowlatency
• ubuntu-upgrade-linux-image-5-15-0-1064-gke
• ubuntu-upgrade-linux-image-5-15-0-1064-kvm
• ubuntu-upgrade-linux-image-5-15-0-1065-oracle
• ubuntu-upgrade-linux-image-5-15-0-1066-gcp
• ubuntu-upgrade-linux-image-5-15-0-1067-aws
• ubuntu-upgrade-linux-image-5-15-0-1070-azure
• ubuntu-upgrade-linux-image-5-15-0-1070-azure-fde
• ubuntu-upgrade-linux-image-5-15-0-118-generic
• ubuntu-upgrade-linux-image-5-15-0-118-generic-64k
• ubuntu-upgrade-linux-image-5-15-0-118-generic-lpae
• ubuntu-upgrade-linux-image-5-15-0-118-lowlatency
• ubuntu-upgrade-linux-image-5-15-0-118-lowlatency-64k
• 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-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-24-04
• ubuntu-upgrade-linux-image-generic-hwe-20-04
• 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-hwe-20-04
• 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-24-04
• ubuntu-upgrade-linux-image-oem-24-04a
• 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-24-04
• ubuntu-upgrade-linux-image-xilinx-zynqmp

References

• https://attackerkb.com/topics/cve-2024-36969
• CVE - 2024-36969
• USN-6949-1
• USN-6949-2
• USN-6950-1
• USN-6950-2
• USN-6950-3
• USN-6950-4
• USN-6952-1
• USN-6952-2
• USN-6955-1
• USN-6956-1
• USN-6957-1
• USN-7019-1

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