194 lines
9.5 KiB
JSON
194 lines
9.5 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-2021-47447",
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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": "2024-05-21T14:58:30.832Z",
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"datePublished": "2024-05-22T06:19:39.506Z",
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"dateUpdated": "2026-08-05T08:47:50.874Z"
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},
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"cna": {
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"shortName": "Linux",
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"dateUpdated": "2026-08-05T08:47:50.874Z"
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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/msm/a3xx: fix error handling in a3xx_gpu_init()\n\nThese error paths returned 1 on failure, instead of a negative error\ncode. This would lead to an Oops in the caller. A second problem is\nthat the check for \"if (ret != -ENODATA)\" did not work because \"ret\" was\nset to 1."
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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 bug is in the MSM Adreno a3xx GPU bind/init path (adreno_bind→a3xx_gpu_init) and is later exercised via local DRM open (msm_open→adreno_load_gpu) or local PM/unbind callbacks on Qualcomm a3xx devices, not via network or adjacent-link protocols.\nAC:L - On affected configurations where of_icc_get fails (including the explicitly optional ocmem -ENODATA case), the wrong IS_ERR→ERR_PTR(1) path is deterministic: bind incorrectly succeeds after destroying the GPU, and a subsequent DRM open reliably hits the dangling drvdata with no attacker-uncontrollable race.\nPR:L - Triggering the use path only requires opening the local DRM device (/dev/dri/renderD* or card node), which is available to an ordinary unprivileged user or Android app in the video/render group; per guidance, choose PR:L over PR:H.\nUI:N - The attacker opens the DRM device (or otherwise exercises the GPU path) themselves; no separate victim interaction is required.\nS:U - Impact is confined to the host kernel (oops or local privilege-escalation class memory unsafety) and does not cross a VM, IOMMU, or other security-authority boundary.\nC:H - a3xx_destroy frees the msm_gpu while platform drvdata still points at it (msm_gpu_cleanup did not clear drvdata in the vulnerable window), yielding a UAF; reclaiming that object enables arbitrary kernel read primitives, so Confidentiality is High.\nI:H - The UAF'd msm_gpu contains function pointers (gpu->funcs) used by adreno_load_gpu/msm_gpu_hw_init and related paths; heap spraying the freed object provides a control-flow hijack / arbitrary write primitive, so Integrity is High.\nA:H - Using the dangling GPU pointer causes a kernel oops/panic (as described in the fix), which is a full availability impact under CVSS kernel guidance."
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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/msm/adreno/a3xx_gpu.c"
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],
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],
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{
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},
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{
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"version": "0",
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"lessThan": "5.11",
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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": "5.14.14",
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"lessThanOrEqual": "5.14.*",
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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": "5.15",
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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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"title": "drm/msm/a3xx: fix error handling in a3xx_gpu_init()",
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