{
  "cveId": "CVE-2024-50177",
  "url": "https://patchblox.com/security/cve/CVE-2024-50177",
  "summary": "CVE-2024-50177 is fixed in 26 products on 1 platform, first by DEBIAN-CVE-2024-50177, released November 8, 2024. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "drm/amd/display: fix a UBSAN warning in DML2.1",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  drm/amd/display: fix a UBSAN warning in DML2.1  When programming phantom pipe, since cursor_width is explicity set to 0, this causes calculation logic to trigger overflow for an unsigned int triggering the kernel\u0027s UBSAN check as below:  [   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 [   40.962849] shift exponent 4294967170 is too large for 32-bit type \u0027unsigned int\u0027 [   40.962852] CPU: 1 PID: 1670 Comm: gnome-shell Tainted: G        W  OE      6.5.0-41-generic #41~22.04.2-Ubuntu [   40.962854] Hardware name: Gigabyte Technology Co., Ltd. X670E AORUS PRO X/X670E AORUS PRO X, BIOS F21 01/10/2024 [   40.962856] Call Trace: [   40.962857]  \u003CTASK\u003E [   40.962860]  dump_stack_lvl\u002B0x48/0x70 [   40.962870]  dump_stack\u002B0x10/0x20 [   40.962872]  __ubsan_handle_shift_out_of_bounds\u002B0x1ac/0x360 [   40.962878]  calculate_cursor_req_attributes.cold\u002B0x1b/0x28 [amdgpu] [   40.963099]  dml_core_mode_support\u002B0x6b91/0x16bc0 [amdgpu] [   40.963327]  ? srso_alias_return_thunk\u002B0x5/0x7f [   40.963331]  ? CalculateWatermarksMALLUseAndDRAMSpeedChangeSupport\u002B0x18b8/0x2790 [amdgpu] [   40.963534]  ? srso_alias_return_thunk\u002B0x5/0x7f [   40.963536]  ? dml_core_mode_support\u002B0xb3db/0x16bc0 [amdgpu] [   40.963730]  dml2_core_calcs_mode_support_ex\u002B0x2c/0x90 [amdgpu] [   40.963906]  ? srso_alias_return_thunk\u002B0x5/0x7f [   40.963909]  ? dml2_core_calcs_mode_support_ex\u002B0x2c/0x90 [amdgpu] [   40.964078]  core_dcn4_mode_support\u002B0x72/0xbf0 [amdgpu] [   40.964247]  dml2_top_optimization_perform_optimization_phase\u002B0x1d3/0x2a0 [amdgpu] [   40.964420]  dml2_build_mode_programming\u002B0x23d/0x750 [amdgpu] [   40.964587]  dml21_validate\u002B0x274/0x770 [amdgpu] [   40.964761]  ? srso_alias_return_thunk\u002B0x5/0x7f [   40.964763]  ? resource_append_dpp_pipes_for_plane_composition\u002B0x27c/0x3b0 [amdgpu] [   40.964942]  dml2_validate\u002B0x504/0x750 [amdgpu] [   40.965117]  ? dml21_copy\u002B0x95/0xb0 [amdgpu] [   40.965291]  ? srso_alias_return_thunk\u002B0x5/0x7f [   40.965295]  dcn401_validate_bandwidth\u002B0x4e/0x70 [amdgpu] [   40.965491]  update_planes_and_stream_state\u002B0x38d/0x5c0 [amdgpu] [   40.965672]  update_planes_and_stream_v3\u002B0x52/0x1e0 [amdgpu] [   40.965845]  ? srso_alias_return_thunk\u002B0x5/0x7f [   40.965849]  dc_update_planes_and_stream\u002B0x71/0xb0 [amdgpu]  Fix this by adding a guard for checking cursor width before triggering the size calculation.",
  "published": "2024-11-08T06:15:15Z",
  "severity": "medium",
  "cvss": 5.5,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
  "cwe": "Integer Overflow or Wraparound",
  "epss": 0.0019,
  "epssPercentile": 0.08728,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-50177",
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