194 lines
10 KiB
JSON
194 lines
10 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2024-42117",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2024-07-29T15:50:41.178Z",
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"datePublished": "2024-07-30T07:46:09.648Z",
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"dateUpdated": "2026-08-05T11:35:46.481Z"
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},
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"shortName": "Linux",
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"dateUpdated": "2026-08-05T11:35:46.481Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: ASSERT when failing to find index by plane/stream id\n\n[WHY]\nfind_disp_cfg_idx_by_plane_id and find_disp_cfg_idx_by_stream_id returns\nan array index and they return -1 when not found; however, -1 is not a\nvalid index number.\n\n[HOW]\nWhen this happens, call ASSERT(), and return a positive number (which is\nfewer than callers' array size) instead.\n\nThis fixes 4 OVERRUN and 2 NEGATIVE_RETURNS issues reported by Coverity."
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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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"baseScore": 7.8,
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"baseSeverity": "HIGH"
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},
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"scenarios": [
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{
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"lang": "en",
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"value": "AV:L - The vulnerable code is in the amdgpu DC display pipeline mapper, reached only through local DRM ioctls (`DRM_IOCTL_MODE_ATOMIC`, `SETPLANE`, `PAGE_FLIP`) on `/dev/dri/card*`. There is no network or adjacent-network path to `dml2_map_dc_pipes()`.\nAC:L - There is no race, no timing window, and no memory-layout condition outside the attacker's control — the attacker directly supplies the stream/plane/ODM configuration in the atomic commit that desynchronizes the 6-entry `disp_cfg_to_*_id` mapping table, and the failed lookup then deterministically yields `0xFFFFFFFF` as an array index.\nPR:L - The path requires only DRM master on the card node, which systemd-logind grants to the ordinary unprivileged user owning the active graphical session; no root, no CAP_SYS_ADMIN, and no capability in the init namespace is needed.\nUI:N - The attacker performs the atomic modeset/plane commit themselves from their own process; no victim action, no filesystem mount, and no file open by another user is involved.\nS:U - The out-of-bounds read and the resulting stack corruption stay within the kernel's own memory and the amdgpu driver's security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - `ODMMode[0xFFFFFFFF]` and `DPPPerSurface[0xFFFFFFFF]` read roughly 16 GB beyond the display-config arrays, an entirely unbounded out-of-bounds read whose value is then propagated into driver state and observable pipe/ODM behavior, giving disclosure of arbitrary kernel memory contents.\nI:H - The OOB-read value becomes `mpc_factor`, which bounds the write loop `pipe_pool->pipes_assigned_to_plane[odm_slice][mpc_slice] = pipes[next_pipe_to_assign++]` over a `int[4][4]` field of a stack-allocated `struct dc_pipe_mapping_scratch`, producing an out-of-bounds kernel stack write and a subsequent OOB index into `res_ctx.pipe_ctx[]` — corruption of that class is exploitable for control-flow hijacking.\nA:H - The ~16 GB-offset dereference lands in unmapped kernel address space in the common case, causing an immediate oops, and the follow-on stack overflow reliably panics the machine; the affected code runs during every display commit, so the crash is trivially repeatable."
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}
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]
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/gpu/drm/amd/display/dc/dml2/dml2_dc_resource_mgmt.c"
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],
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"versions": [
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{
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"version": "7966f319c66d9468623c6a6a017ecbc0dd79be75",
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"lessThan": "a9c047a5cf3135b8b66bd28fbe2c698b9cace0b3",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "7966f319c66d9468623c6a6a017ecbc0dd79be75",
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"lessThan": "01eb50e53c1ce505bf449348d433181310288765",
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"status": "affected",
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"versionType": "git"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/gpu/drm/amd/display/dc/dml2/dml2_dc_resource_mgmt.c"
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],
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"versions": [
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{
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"version": "6.7",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "6.7",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.9.9",
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"lessThanOrEqual": "6.9.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.10",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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"operator": "OR",
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"versionStartIncluding": "6.7",
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"versionEndExcluding": "6.9.9"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.7",
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"versionEndExcluding": "6.10"
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/a9c047a5cf3135b8b66bd28fbe2c698b9cace0b3"
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{
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"url": "https://git.kernel.org/stable/c/01eb50e53c1ce505bf449348d433181310288765"
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}
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],
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"title": "drm/amd/display: ASSERT when failing to find index by plane/stream id",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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"adp": [
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"shortName": "CVE",
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"dateUpdated": "2024-08-02T04:54:32.225Z"
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"title": "CVE Program Container",
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"type": "ssvc",
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"content": {
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"id": "CVE-2024-42117",
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"role": "CISA Coordinator",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "no"
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{
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"Technical Impact": "partial"
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"version": "2.0.3",
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"timestamp": "2024-09-10T16:17:10.514634Z"
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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