CVE-2025-40152
Lifecycle Timeline
2Description
In the Linux kernel, the following vulnerability has been resolved: drm/msm: Fix bootup splat with separate_gpu_drm modparam The drm_gem_for_each_gpuvm_bo() call from lookup_vma() accesses drm_gem_obj.gpuva.list, which is not initialized when the drm driver does not support DRIVER_GEM_GPUVA feature. Enable it for msm_kms drm driver to fix the splat seen when msm.separate_gpu_drm=1 modparam is set: [ 9.506020] Unable to handle kernel paging request at virtual address fffffffffffffff0 [ 9.523160] Mem abort info: [ 9.523161] ESR = 0x0000000096000006 [ 9.523163] EC = 0x25: DABT (current EL), IL = 32 bits [ 9.523165] SET = 0, FnV = 0 [ 9.523166] EA = 0, S1PTW = 0 [ 9.523167] FSC = 0x06: level 2 translation fault [ 9.523169] Data abort info: [ 9.523170] ISV = 0, ISS = 0x00000006, ISS2 = 0x00000000 [ 9.523171] CM = 0, WnR = 0, TnD = 0, TagAccess = 0 [ 9.523172] GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0 [ 9.523174] swapper pgtable: 4k pages, 48-bit VAs, pgdp=0000000ad370f000 [ 9.523176] [fffffffffffffff0] pgd=0000000000000000, p4d=0000000ad4787403, pud=0000000ad4788403, pmd=0000000000000000 [ 9.523184] Internal error: Oops: 0000000096000006 [#1] SMP [ 9.592968] CPU: 9 UID: 0 PID: 448 Comm: (udev-worker) Not tainted 6.17.0-rc4-assorted-fix-00005-g0e9bb53a2282-dirty #3 PREEMPT [ 9.592970] Hardware name: Qualcomm CRD, BIOS 6.0.240718.BOOT.MXF.2.4-00515-HAMOA-1 07/18/2024 [ 9.592971] pstate: a1400005 (NzCv daif +PAN -UAO -TCO +DIT -SSBS BTYPE=--) [ 9.592973] pc : lookup_vma+0x28/0xe0 [msm] [ 9.592996] lr : get_vma_locked+0x2c/0x128 [msm] [ 9.763632] sp : ffff800082dab460 [ 9.763666] Call trace: [ 9.763668] lookup_vma+0x28/0xe0 [msm] (P) [ 9.763688] get_vma_locked+0x2c/0x128 [msm] [ 9.763706] msm_gem_get_and_pin_iova_range+0x68/0x11c [msm] [ 9.763723] msm_gem_get_and_pin_iova+0x18/0x24 [msm] [ 9.763740] msm_fbdev_driver_fbdev_probe+0xd0/0x258 [msm] [ 9.763760] __drm_fb_helper_initial_config_and_unlock+0x288/0x528 [drm_kms_helper] [ 9.763771] drm_fb_helper_initial_config+0x44/0x54 [drm_kms_helper] [ 9.763779] drm_fbdev_client_hotplug+0x84/0xd4 [drm_client_lib] [ 9.763782] drm_client_register+0x58/0x9c [drm] [ 9.763806] drm_fbdev_client_setup+0xe8/0xcf0 [drm_client_lib] [ 9.763809] drm_client_setup+0xb4/0xd8 [drm_client_lib] [ 9.763811] msm_drm_kms_post_init+0x2c/0x3c [msm] [ 9.763830] msm_drm_init+0x1a8/0x22c [msm] [ 9.763848] msm_drm_bind+0x30/0x3c [msm] [ 9.919273] try_to_bring_up_aggregate_device+0x168/0x1d4 [ 9.919283] __component_add+0xa4/0x170 [ 9.919286] component_add+0x14/0x20 [ 9.919288] msm_dp_display_probe_tail+0x4c/0xac [msm] [ 9.919315] msm_dp_auxbus_done_probe+0x14/0x20 [msm] [ 9.919335] dp_aux_ep_probe+0x4c/0xf0 [drm_dp_aux_bus] [ 9.919341] really_probe+0xbc/0x298 [ 9.919345] __driver_probe_device+0x78/0x12c [ 9.919348] driver_probe_device+0x40/0x160 [ 9.919350] __driver_attach+0x94/0x19c [ 9.919353] bus_for_each_dev+0x74/0xd4 [ 9.919355] driver_attach+0x24/0x30 [ 9.919358] bus_add_driver+0xe4/0x208 [ 9.919360] driver_register+0x60/0x128 [ 9.919363] __dp_aux_dp_driver_register+0x24/0x30 [drm_dp_aux_bus] [ 9.919365] atana33xc20_init+0x20/0x1000 [panel_samsung_atna33xc20] [ 9.919370] do_one_initcall+0x6c/0x1b0 [ 9.919374] do_init_module+0x58/0x234 [ 9.919377] load_module+0x19cc/0x1bd4 [ 9.919380] init_module_from_file+0x84/0xc4 [ 9.919382] __arm64_sys_finit_module+0x1b8/0x2cc [ 9.919384] invoke_syscall+0x48/0x110 [ 9.919389] el0_svc_common.constprop.0+0xc8/0xe8 [ 9.919393] do_el0_svc+0x20/0x2c [ 9.919396] el0_svc+0x34/0xf0 [ 9.919401] el0t_64_sync_handler+0xa0/0xe4 [ 9.919403] el0t_64_sync+0x198/0x19c [ 9.919407] Code: eb0000bf 54000480 d100a003 aa0303e2 (f8418c44) [ 9.919410] ---[ end trace 0000000000000000 ]--- Patchwork: https://patchwork.freedesktop.org/pa ---truncated---
Analysis
In the Linux kernel, the following vulnerability has been resolved: drm/msm: Fix bootup splat with separate_gpu_drm modparam The drm_gem_for_each_gpuvm_bo() call from lookup_vma() accesses. No vendor patch available.
Technical Context
In the Linux kernel, the following vulnerability has been resolved: drm/msm: Fix bootup splat with separate_gpu_drm modparam The drm_gem_for_each_gpuvm_bo() call from lookup_vma() accesses drm_gem_obj.gpuva.list, which is not initialized when the drm driver does not support DRIVER_GEM_GPUVA feature. Enable it for msm_kms drm driver to fix the splat seen when msm.separate_gpu_drm=1 modparam is set: [ 9.506020] Unable to handle kernel paging request at virtual address fffffffffffffff0 [ 9.523160] Mem abort info: [ 9.523161] ESR = 0x0000000096000006 [ 9.523163] EC = 0x25: DABT (current EL), IL = 32 bits [ 9.523165] SET = 0, FnV = 0 [ 9.523166] EA = 0, S1PTW = 0 [ 9.523167] FSC = 0x06: level 2 translation fault [ 9.523169] Data abort info: [ 9.523170] ISV = 0, ISS = 0x00000006, ISS2 = 0x00000000 [ 9.523171] CM = 0, WnR = 0, TnD = 0, TagAccess = 0 [ 9.523172] GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0 [ 9.523174] swapper pgtable: 4k pages, 48-bit VAs, pgdp=0000000ad370f000 [ 9.523176] [fffffffffffffff0] pgd=0000000000000000, p4d=0000000ad4787403, pud=0000000ad4788403, pmd=0000000000000000 [ 9.523184] Internal error: Oops: 0000000096000006 [#1] SMP [ 9.592968] CPU: 9 UID: 0 PID: 448 Comm: (udev-worker) Not tainted 6.17.0-rc4-assorted-fix-00005-g0e9bb53a2282-dirty #3 PREEMPT [ 9.592970] Hardware name: Qualcomm CRD, BIOS 6.0.240718.BOOT.MXF.2.4-00515-HAMOA-1 07/18/2024 [ 9.592971] pstate: a1400005 (NzCv daif +PAN -UAO -TCO +DIT -SSBS BTYPE=--) [ 9.592973] pc : lookup_vma+0x28/0xe0 [msm] [ 9.592996] lr : get_vma_locked+0x2c/0x128 [msm] [ 9.763632] sp : ffff800082dab460 [ 9.763666] Call trace: [ 9.763668] lookup_vma+0x28/0xe0 [msm] (P) [ 9.763688] get_vma_locked+0x2c/0x128 [msm] [ 9.763706] msm_gem_get_and_pin_iova_range+0x68/0x11c [msm] [ 9.763723] msm_gem_get_and_pin_iova+0x18/0x24 [msm] [ 9.763740] msm_fbdev_driver_fbdev_probe+0xd0/0x258 [msm] [ 9.763760] __drm_fb_helper_initial_config_and_unlock+0x288/0x528 [drm_kms_helper] [ 9.763771] drm_fb_helper_initial_config+0x44/0x54 [drm_kms_helper] [ 9.763779] drm_fbdev_client_hotplug+0x84/0xd4 [drm_client_lib] [ 9.763782] drm_client_register+0x58/0x9c [drm] [ 9.763806] drm_fbdev_client_setup+0xe8/0xcf0 [drm_client_lib] [ 9.763809] drm_client_setup+0xb4/0xd8 [drm_client_lib] [ 9.763811] msm_drm_kms_post_init+0x2c/0x3c [msm] [ 9.763830] msm_drm_init+0x1a8/0x22c [msm] [ 9.763848] msm_drm_bind+0x30/0x3c [msm] [ 9.919273] try_to_bring_up_aggregate_device+0x168/0x1d4 [ 9.919283] __component_add+0xa4/0x170 [ 9.919286] component_add+0x14/0x20 [ 9.919288] msm_dp_display_probe_tail+0x4c/0xac [msm] [ 9.919315] msm_dp_auxbus_done_probe+0x14/0x20 [msm] [ 9.919335] dp_aux_ep_probe+0x4c/0xf0 [drm_dp_aux_bus] [ 9.919341] really_probe+0xbc/0x298 [ 9.919345] __driver_probe_device+0x78/0x12c [ 9.919348] driver_probe_device+0x40/0x160 [ 9.919350] __driver_attach+0x94/0x19c [ 9.919353] bus_for_each_dev+0x74/0xd4 [ 9.919355] driver_attach+0x24/0x30 [ 9.919358] bus_add_driver+0xe4/0x208 [ 9.919360] driver_register+0x60/0x128 [ 9.919363] __dp_aux_dp_driver_register+0x24/0x30 [drm_dp_aux_bus] [ 9.919365] atana33xc20_init+0x20/0x1000 [panel_samsung_atna33xc20] [ 9.919370] do_one_initcall+0x6c/0x1b0 [ 9.919374] do_init_module+0x58/0x234 [ 9.919377] load_module+0x19cc/0x1bd4 [ 9.919380] init_module_from_file+0x84/0xc4 [ 9.919382] __arm64_sys_finit_module+0x1b8/0x2cc [ 9.919384] invoke_syscall+0x48/0x110 [ 9.919389] el0_svc_common.constprop.0+0xc8/0xe8 [ 9.919393] do_el0_svc+0x20/0x2c [ 9.919396] el0_svc+0x34/0xf0 [ 9.919401] el0t_64_sync_handler+0xa0/0xe4 [ 9.919403] el0t_64_sync+0x198/0x19c [ 9.919407] Code: eb0000bf 54000480 d100a003 aa0303e2 (f8418c44) [ 9.919410] ---[ end trace 0000000000000000 ]--- Patchwork: https://patchwork.freedesktop.org/pa ---truncated---
Affected Products
See vendor advisory for affected versions.
Remediation
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.
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External POC / Exploit Code
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