CVE-2024-50177

{"id": "CVE-2024-50177", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "published": "2024-11-08T06:15:15.117", "references": [{"url": "https://git.kernel.org/stable/c/27bc3da5eae57e3af8f5648b4498ffde48781434", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/eaf3adb8faab611ba57594fa915893fc93a7788c", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-190"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: fix a UBSAN warning in DML2.1\n\nWhen programming phantom pipe, since cursor_width is explicity set to 0,\nthis causes calculation logic to trigger overflow for an unsigned int\ntriggering the kernel's UBSAN check as below:\n\n[ 40.962845] UBSAN: shift-out-of-bounds in /tmp/amd.EfpumTkO/amd/amdgpu/../display/dc/dml2/dml21/src/dml2_core/dml2_core_dcn4_calcs.c:3312:34\n[ 40.962849] shift exponent 4294967170 is too large for 32-bit type 'unsigned int'\n[ 40.962852] CPU: 1 PID: 1670 Comm: gnome-shell Tainted: G W OE 6.5.0-41-generic #41~22.04.2-Ubuntu\n[ 40.962854] Hardware name: Gigabyte Technology Co., Ltd. X670E AORUS PRO X/X670E AORUS PRO X, BIOS F21 01/10/2024\n[ 40.962856] Call Trace:\n[ 40.962857] <TASK>\n[ 40.962860] dump_stack_lvl+0x48/0x70\n[ 40.962870] dump_stack+0x10/0x20\n[ 40.962872] __ubsan_handle_shift_out_of_bounds+0x1ac/0x360\n[ 40.962878] calculate_cursor_req_attributes.cold+0x1b/0x28 [amdgpu]\n[ 40.963099] dml_core_mode_support+0x6b91/0x16bc0 [amdgpu]\n[ 40.963327] ? srso_alias_return_thunk+0x5/0x7f\n[ 40.963331] ? CalculateWatermarksMALLUseAndDRAMSpeedChangeSupport+0x18b8/0x2790 [amdgpu]\n[ 40.963534] ? srso_alias_return_thunk+0x5/0x7f\n[ 40.963536] ? dml_core_mode_support+0xb3db/0x16bc0 [amdgpu]\n[ 40.963730] dml2_core_calcs_mode_support_ex+0x2c/0x90 [amdgpu]\n[ 40.963906] ? srso_alias_return_thunk+0x5/0x7f\n[ 40.963909] ? dml2_core_calcs_mode_support_ex+0x2c/0x90 [amdgpu]\n[ 40.964078] core_dcn4_mode_support+0x72/0xbf0 [amdgpu]\n[ 40.964247] dml2_top_optimization_perform_optimization_phase+0x1d3/0x2a0 [amdgpu]\n[ 40.964420] dml2_build_mode_programming+0x23d/0x750 [amdgpu]\n[ 40.964587] dml21_validate+0x274/0x770 [amdgpu]\n[ 40.964761] ? srso_alias_return_thunk+0x5/0x7f\n[ 40.964763] ? resource_append_dpp_pipes_for_plane_composition+0x27c/0x3b0 [amdgpu]\n[ 40.964942] dml2_validate+0x504/0x750 [amdgpu]\n[ 40.965117] ? dml21_copy+0x95/0xb0 [amdgpu]\n[ 40.965291] ? srso_alias_return_thunk+0x5/0x7f\n[ 40.965295] dcn401_validate_bandwidth+0x4e/0x70 [amdgpu]\n[ 40.965491] update_planes_and_stream_state+0x38d/0x5c0 [amdgpu]\n[ 40.965672] update_planes_and_stream_v3+0x52/0x1e0 [amdgpu]\n[ 40.965845] ? srso_alias_return_thunk+0x5/0x7f\n[ 40.965849] dc_update_planes_and_stream+0x71/0xb0 [amdgpu]\n\nFix this by adding a guard for checking cursor width before triggering\nthe size calculation."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: drm/amd/display: se corrige una advertencia de UBSAN en DML2.1 Al programar una tuber\u00eda fantasma, dado que cursor_width se establece expl\u00edcitamente en 0, esto hace que la l\u00f3gica de c\u00e1lculo active un desbordamiento para un int sin signo que activa la comprobaci\u00f3n UBSAN del kernel como se muestra a continuaci\u00f3n: [ 40.962845] UBSAN: desplazamiento fuera de los l\u00edmites en /tmp/amd.EfpumTkO/amd/amdgpu/../display/dc/dml2/dml21/src/dml2_core/dml2_core_dcn4_calcs.c:3312:34 [ 40.962849] El exponente de desplazamiento 4294967170 es demasiado grande para el tipo de 32 bits 'unsigned int' [ 40.962852] CPU: 1 PID: 1670 Comm: gnome-shell Contaminado: GW OE 6.5.0-41-generic #41~22.04.2-Ubuntu [ 40.962854] Nombre del hardware: Gigabyte Technology Co., Ltd. X670E AORUS PRO X/X670E AORUS PRO X, BIOS F21 01/10/2024 [ 40.962856] Seguimiento de llamadas: [ 40.962857] [ 40.962860] dump_stack_lvl+0x48/0x70 [ 40.962870] dump_stack+0x10/0x20 [ 40.962872] __ubsan_handle_shift_out_of_bounds+0x1ac/0x360 [ 40.962878] CalculateWatermarksMALLUseAndDRAMSpeedChangeSupport+0x18b8/0x2790 [amdgpu] [ 40.963534] ? srso_alias_return_thunk+0x5/0x7f [ 40.963536] ? srso_alias_return_thunk+0x5/0x7f [ 40.963909] ? srso_alias_return_thunk+0x5/0x7f [ 40.964763] ? recurso_agregar_dpp_tuber\u00edas_para_composici\u00f3n_de_planos+0x27c/0x3b0 [amdgpu] [ 40.964942] dml2_validate+0x504/0x750 [amdgpu] [ 40.965117] ? dml21_copy+0x95/0xb0 [amdgpu] [ 40.965291] ? srso_alias_return_thunk+0x5/0x7f [ 40.965295] dcn401_validate_bandwidth+0x4e/0x70 [amdgpu] [ 40.965491] update_planes_and_stream_state+0x38d/0x5c0 [amdgpu] [ 40.965672] update_planes_and_stream_v3+0x52/0x1e0 [amdgpu] [ 40.965845] ? srso_alias_return_thunk+0x5/0x7f [ 40.965849] dc_update_planes_and_stream+0x71/0xb0 [amdgpu] Solucione esto agregando una protecci\u00f3n para verificar el ancho del cursor antes de activar el c\u00e1lculo del tama\u00f1o."}], "lastModified": "2024-12-09T23:14:39.593", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "6D5FF9C2-A011-4A64-B614-F9244ED2EA0D", "versionEndExcluding": "6.11.3"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}