| { |
| "containers": { |
| "cna": { |
| "providerMetadata": { |
| "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038" |
| }, |
| "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." |
| } |
| ], |
| "affected": [ |
| { |
| "product": "Linux", |
| "vendor": "Linux", |
| "defaultStatus": "unaffected", |
| "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", |
| "programFiles": [ |
| "drivers/gpu/drm/amd/display/dc/dml2/dml21/src/dml2_core/dml2_core_dcn4_calcs.c" |
| ], |
| "versions": [ |
| { |
| "version": "70839da6360500a82e4d5f78499284474cbed7c1", |
| "lessThan": "27bc3da5eae57e3af8f5648b4498ffde48781434", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "70839da6360500a82e4d5f78499284474cbed7c1", |
| "lessThan": "eaf3adb8faab611ba57594fa915893fc93a7788c", |
| "status": "affected", |
| "versionType": "git" |
| } |
| ] |
| }, |
| { |
| "product": "Linux", |
| "vendor": "Linux", |
| "defaultStatus": "affected", |
| "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", |
| "programFiles": [ |
| "drivers/gpu/drm/amd/display/dc/dml2/dml21/src/dml2_core/dml2_core_dcn4_calcs.c" |
| ], |
| "versions": [ |
| { |
| "version": "6.11", |
| "status": "affected" |
| }, |
| { |
| "version": "0", |
| "lessThan": "6.11", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.11.3", |
| "lessThanOrEqual": "6.11.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.12", |
| "lessThanOrEqual": "*", |
| "status": "unaffected", |
| "versionType": "original_commit_for_fix" |
| } |
| ] |
| } |
| ], |
| "cpeApplicability": [ |
| { |
| "nodes": [ |
| { |
| "operator": "OR", |
| "negate": false, |
| "cpeMatch": [ |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "6.11", |
| "versionEndExcluding": "6.11.3" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "6.11", |
| "versionEndExcluding": "6.12" |
| } |
| ] |
| } |
| ] |
| } |
| ], |
| "references": [ |
| { |
| "url": "https://git.kernel.org/stable/c/27bc3da5eae57e3af8f5648b4498ffde48781434" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/eaf3adb8faab611ba57594fa915893fc93a7788c" |
| } |
| ], |
| "title": "drm/amd/display: fix a UBSAN warning in DML2.1", |
| "x_generator": { |
| "engine": "bippy-1.2.0" |
| } |
| } |
| }, |
| "cveMetadata": { |
| "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038", |
| "cveID": "CVE-2024-50177", |
| "requesterUserId": "gregkh@kernel.org", |
| "serial": "1", |
| "state": "PUBLISHED" |
| }, |
| "dataType": "CVE_RECORD", |
| "dataVersion": "5.0" |
| } |
