{"id":"DEBIAN-CVE-2024-50177","details":"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's 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 'unsigned int' [   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+0x48/0x70 [   40.962870]  dump_stack+0x10/0x20 [   40.962872]  __ubsan_handle_shift_out_of_bounds+0x1ac/0x360 [   40.962878]  calculate_cursor_req_attributes.cold+0x1b/0x28 [amdgpu] [   40.963099]  dml_core_mode_support+0x6b91/0x16bc0 [amdgpu] [   40.963327]  ? srso_alias_return_thunk+0x5/0x7f [   40.963331]  ? CalculateWatermarksMALLUseAndDRAMSpeedChangeSupport+0x18b8/0x2790 [amdgpu] [   40.963534]  ? srso_alias_return_thunk+0x5/0x7f [   40.963536]  ? dml_core_mode_support+0xb3db/0x16bc0 [amdgpu] [   40.963730]  dml2_core_calcs_mode_support_ex+0x2c/0x90 [amdgpu] [   40.963906]  ? srso_alias_return_thunk+0x5/0x7f [   40.963909]  ? dml2_core_calcs_mode_support_ex+0x2c/0x90 [amdgpu] [   40.964078]  core_dcn4_mode_support+0x72/0xbf0 [amdgpu] [   40.964247]  dml2_top_optimization_perform_optimization_phase+0x1d3/0x2a0 [amdgpu] [   40.964420]  dml2_build_mode_programming+0x23d/0x750 [amdgpu] [   40.964587]  dml21_validate+0x274/0x770 [amdgpu] [   40.964761]  ? srso_alias_return_thunk+0x5/0x7f [   40.964763]  ? resource_append_dpp_pipes_for_plane_composition+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]  Fix this by adding a guard for checking cursor width before triggering the size calculation.","modified":"2026-09-15T09:03:14.112326034Z","published":"2024-11-08T06:15:15.117Z","upstream":["CVE-2024-50177"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2024-50177"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:13","purl":"pkg:deb/debian/linux?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.11.4-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2024-50177.json"}},{"package":{"name":"linux","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.11.4-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2024-50177.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}