In the Linux kernel, the following vulnerability has been resolved:
drm/msm/gpu: Fix crash when throttling GPU immediately during boot
There is a small chance that the GPU is already hot during boot. In that case, the call to of_devfreq_cooling_register() will immediately try to apply devfreq cooling, as seen in the following crash:
Unable to handle kernel paging request at virtual address 0000000000014110 pc : a6xx_gpu_busy+0x1c/0x58 [msm] lr : msm_devfreq_get_dev_status+0xbc/0x140 [msm] Call trace: a6xx_gpu_busy+0x1c/0x58 [msm] (P) devfreq_simple_ondemand_func+0x3c/0x150 devfreq_update_target+0x44/0xd8 qos_max_notifier_call+0x30/0x84 blocking_notifier_call_chain+0x6c/0xa0 pm_qos_update_target+0xd0/0x110 freq_qos_apply+0x3c/0x74 apply_constraint+0x88/0x148 __dev_pm_qos_update_request+0x7c/0xcc dev_pm_qos_update_request+0x38/0x5c devfreq_cooling_set_cur_state+0x98/0xf0 __thermal_cdev_update+0x64/0xb4 thermal_cdev_update+0x4c/0x58 step_wise_manage+0x1f0/0x318 __thermal_zone_device_update+0x278/0x424 __thermal_cooling_device_register+0x2bc/0x308 thermal_of_cooling_device_register+0x10/0x1c of_devfreq_cooling_register_power+0x240/0x2bc of_devfreq_cooling_register+0x14/0x20 msm_devfreq_init+0xc4/0x1a0 [msm] msm_gpu_init+0x304/0x574 [msm] adreno_gpu_init+0x1c4/0x2e0 [msm] a6xx_gpu_init+0x5c8/0x9c8 [msm] adreno_bind+0x2a8/0x33c [msm] ...
At this point we haven't initialized the GMU at all yet, so we cannot read the GMU registers inside a6xx_gpu_busy(). A similar issue was fixed before in commit 6694482a70e9 ("drm/msm: Avoid unclocked GMU register access in 6xx gpu_busy"): msm_devfreq_init() does call devfreq_suspend_device(), but unlike msm_devfreq_suspend(), it doesn't set the df->suspended flag accordingly. This means the df->suspended flag does not match the actual devfreq state after initialization and msm_devfreq_get_dev_status() will end up accessing GMU registers, causing the crash.
Fix this by setting df->suspended correctly during initialization.
Patchwork: https://patchwork.freedesktop.org/patch/650772/
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linux-6.1Upgrade linux | Jul 28, 2025 | Jul 28, 2025 |
| Suse | — | Upgrade kernel-azure-optionalUpgrade dtb-caviumUpgrade dlm-kmp-64kbUpgrade dtb-freescaleUpgrade ocfs2-kmp-azureUpgrade gfs2-kmp-defaultUpgrade kernel-default-base-rebuildUpgrade kernel-syms-azureUpgrade kernel-default-livepatchUpgrade kernel-default-vdsoUpgrade kernel-symsUpgrade gfs2-kmp-azureUpgrade kernel-devel-rtUpgrade gfs2-kmp-rtUpgrade kernel-debug-vdsoUpgrade kernel-rt-develUpgrade kernel-rt-livepatchUpgrade kernel-source-vanillaUpgrade kernel-kvmsmall-develUpgrade kernel-zfcpdumpUpgrade kernel-64kb-develUpgrade ocfs2-kmp-defaultUpgrade dtb-exynosUpgrade dtb-lgUpgrade kernel-sourceUpgrade kernel-source-rtUpgrade kernel-kvmsmallUpgrade ocfs2-kmp-64kbUpgrade kselftests-kmp-azureUpgrade kernel-default-optionalUpgrade dtb-allwinnerUpgrade kernel-source-azureUpgrade kernel-rtUpgrade ocfs2-kmp-rtUpgrade kernel-develUpgrade dtb-broadcomUpgrade reiserfs-kmp-64kbUpgrade dtb-mediatekUpgrade kernel-default-develUpgrade dtb-xilinxUpgrade dtb-amazonUpgrade dtb-qcomUpgrade dtb-alteraUpgrade kernel-azureUpgrade kernel-rt_debug-develUpgrade gfs2-kmp-64kbUpgrade kernel-devel-azureUpgrade reiserfs-kmp-azureUpgrade kernel-64kbUpgrade cluster-md-kmp-azureUpgrade kselftests-kmp-64kbUpgrade kernel-azure-develUpgrade cluster-md-kmp-rtUpgrade kernel-rt-optionalUpgrade cluster-md-kmp-64kbUpgrade reiserfs-kmp-rtUpgrade dtb-armUpgrade dlm-kmp-defaultUpgrade kernel-debug-develUpgrade kernel-debugUpgrade kselftests-kmp-defaultUpgrade kernel-obs-qaUpgrade kernel-kvmsmall-vdsoUpgrade kernel-defaultUpgrade kernel-azure-extraUpgrade kernel-64kb-optionalUpgrade dtb-sprdUpgrade kernel-rt-livepatch-develUpgrade kernel-docs-htmlUpgrade dtb-rockchipUpgrade kernel-obs-buildUpgrade kernel-rt_debug-vdsoUpgrade kernel-rt-vdsoUpgrade kernel-default-livepatch-develUpgrade dtb-renesasUpgrade dtb-apmUpgrade dlm-kmp-rtUpgrade kernel-rt_debugUpgrade dtb-nvidiaUpgrade kernel-default-extraUpgrade dtb-socionextUpgrade dtb-amlogicUpgrade dtb-amdUpgrade dlm-kmp-azureUpgrade kselftests-kmp-rtUpgrade cluster-md-kmp-defaultUpgrade reiserfs-kmp-defaultUpgrade dtb-marvellUpgrade kernel-azure-vdsoUpgrade kernel-64kb-extraUpgrade dtb-hisiliconUpgrade kernel-syms-rtUpgrade kernel-rt-extraUpgrade kernel-macrosUpgrade kernel-default-baseUpgrade kernel-docsUpgrade dtb-apple | Dec 5, 2025 | Aug 18, 2025 |
| Ubuntu | — | Upgrade linux-image-aws-6.8Upgrade linux-image-6.8.0-1046-nvidia-lowlatency-64kUpgrade linux-image-6.8.0-1047-gcpUpgrade linux-image-nvidia-lowlatency-6.8Upgrade linux-image-xilinx-zynqmpUpgrade linux-image-nvidia-lowlatency-64kUpgrade linux-image-realtime-6.14Upgrade linux-image-6.14.0-1015-oracleUpgrade linux-image-raspi-6.8Upgrade linux-image-lowlatency-64k-6.8Upgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-azure-6.14Upgrade linux-image-gcp-64kUpgrade linux-image-gkeopUpgrade linux-image-intel-iotgUpgrade linux-image-lowlatency-hwe-22.04Upgrade linux-image-gcp-64k-lts-24.04Upgrade linux-image-oracle-6.8Upgrade linux-image-6.8.0-1051-azureUpgrade linux-image-6.14.0-1016-raspiUpgrade linux-image-generic-64k-hwe-22.04Upgrade linux-image-6.8.0-1046-nvidiaUpgrade linux-image-oracle-lts-24.04Upgrade linux-image-xilinx-6.8Upgrade linux-image-fipsUpgrade linux-image-gke-64kUpgrade linux-image-aws-6.14Upgrade linux-image-6.14.0-1014-azureUpgrade linux-image-generic-64kUpgrade linux-image-6.14.0-1015-oracle-64kUpgrade linux-image-6.8.0-1047-gcp-64kUpgrade linux-image-6.8.0-1046-awsUpgrade linux-image-6.14.0-34-genericUpgrade linux-image-gcp-64k-6.8Upgrade linux-image-oem-22.04Upgrade linux-image-genericUpgrade linux-image-realtimeUpgrade linux-image-nvidia-lowlatency-64k-6.8Upgrade linux-image-6.8.0-1030-gkeopUpgrade linux-image-oracle-64k-lts-24.04Upgrade linux-image-generic-6.14Upgrade linux-image-realtime-6.8.1Upgrade linux-image-oracle-6.14Upgrade linux-image-generic-lpaeUpgrade linux-image-raspi-6.14Upgrade linux-image-6.8.0-1046-nvidia-lowlatencyUpgrade linux-image-6.8.0-1046-aws-64kUpgrade linux-image-gcp-fipsUpgrade linux-image-realtime-hwe-24.04Upgrade linux-image-gkeUpgrade linux-image-6.8.0-100-lowlatencyUpgrade linux-image-6.8.0-1046-azureUpgrade linux-image-raspiUpgrade linux-image-nvidia-64k-6.8Upgrade linux-image-virtual-6.8Upgrade linux-image-lowlatency-64kUpgrade linux-image-6.14.0-1018-gcp-64kUpgrade linux-image-6.8.0-100-generic-64kUpgrade linux-image-oem-6.14Upgrade linux-image-nvidia-hwe-22.04Upgrade linux-image-nvidiaUpgrade linux-image-6.14.0-1014-oemUpgrade linux-image-azureUpgrade linux-image-lowlatency-6.8Upgrade linux-image-6.8.0-2037-raspi-realtimeUpgrade linux-image-nvidia-6.8Upgrade linux-image-oem-22.04dUpgrade linux-image-oem-24.04Upgrade linux-image-6.14.0-34-generic-64kUpgrade linux-image-nvidia-64k-hwe-22.04Upgrade linux-image-aws-fipsUpgrade linux-image-nvidia-lowlatencyUpgrade linux-image-6.8.0-1044-ibmUpgrade linux-image-gcp-64k-6.14Upgrade linux-image-realtime-hwe-22.04Upgrade linux-image-oracle-64k-6.8Upgrade linux-image-oem-24.04cUpgrade linux-image-lowlatency-64k-hwe-22.04Upgrade linux-image-oracle-64kUpgrade linux-image-azure-nvidiaUpgrade linux-image-aws-64kUpgrade linux-image-oem-22.04bUpgrade linux-image-generic-64k-6.8Upgrade linux-image-gcp-lts-24.04Upgrade linux-image-azure-nvidia-6.14Upgrade linux-image-gke-6.8Upgrade linux-image-6.14.0-1015-aws-64kUpgrade linux-image-ibm-6.8Upgrade linux-image-azure-6.8Upgrade linux-image-oem-22.04cUpgrade linux-image-virtual-hwe-24.04Upgrade linux-image-xilinxUpgrade linux-image-aws-64k-lts-24.04Upgrade linux-image-6.8.0-100-fipsUpgrade linux-image-6.8.0-100-lowlatency-64kUpgrade linux-image-raspi-realtimeUpgrade linux-image-gcpUpgrade linux-image-6.8.0-1043-gkeUpgrade linux-image-ibmUpgrade linux-image-oracle-64k-6.14Upgrade linux-image-aws-lts-24.04Upgrade linux-image-gcp-fips-6.8Upgrade linux-image-azure-lts-24.04Upgrade linux-image-6.14.0-1007-azure-nvidiaUpgrade linux-image-gkeop-6.8Upgrade linux-image-6.8.0-1046-nvidia-64kUpgrade linux-image-lowlatencyUpgrade linux-image-ibm-lts-24.04Upgrade linux-image-awsUpgrade linux-image-generic-hwe-24.04Upgrade linux-image-6.14.0-1014-realtimeUpgrade linux-image-oracleUpgrade linux-image-kvmUpgrade linux-image-6.8.0-100-genericUpgrade linux-image-azure-fips-6.8Upgrade linux-image-ibm-classicUpgrade linux-image-gcp-6.8Upgrade linux-image-aws-64k-6.14Upgrade linux-image-6.8.0-1043-oracleUpgrade linux-image-aws-fips-6.8Upgrade linux-image-6.8.0-1047-gcp-fipsUpgrade linux-image-6.8.1-1041-realtimeUpgrade linux-image-nvidia-64kUpgrade linux-image-oem-22.04aUpgrade linux-image-generic-64k-6.14Upgrade linux-image-6.8.0-1046-aws-fipsUpgrade linux-image-raspi-realtime-6.8Upgrade linux-image-fips-6.8Upgrade linux-image-6.8.0-1043-gke-64kUpgrade linux-image-aws-64k-6.8Upgrade linux-image-6.14.0-1015-awsUpgrade linux-image-generic-6.8Upgrade linux-image-virtualUpgrade linux-image-6.8.0-1023-xilinxUpgrade linux-image-generic-hwe-22.04Upgrade linux-image-virtual-hwe-22.04Upgrade linux-image-oem-24.04bUpgrade linux-image-virtual-6.14Upgrade linux-image-6.8.0-1047-raspiUpgrade linux-image-6.8.0-1043-oracle-64kUpgrade linux-image-gcp-6.14Upgrade linux-image-gke-64k-6.8Upgrade linux-image-intel-iot-realtimeUpgrade linux-image-6.14.0-1018-gcpUpgrade linux-image-oem-24.04aUpgrade linux-image-6.8.0-1046-azure-fipsUpgrade linux-image-azure-fips | Jul 31, 2025 | Jul 25, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Oct 10, 2025 | Jul 25, 2025 |
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