243 lines
13 KiB
JSON
243 lines
13 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-2026-64153",
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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": "2026-07-19T07:54:57.038Z",
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"datePublished": "2026-07-19T15:40:42.102Z",
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"dateUpdated": "2026-08-05T12:39:48.053Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-08-05T12:39:48.053Z"
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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: Fix iommu_map_sgtable() return value check and avoid WARN\n\nCommit \"iommu: return full error code from iommu_map_sg[_atomic]()\"\nchanged iommu_map_sgtable() to return an ssize_t and negative values\nin error cases, rather than a size_t and a zero.\n\nStore the return value in the appropriate type and in case of error,\nreturn it rather than WARNing.\n\nPatchwork: https://patchwork.freedesktop.org/patch/719685/"
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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:C/C:H/I:H/A:H",
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"baseScore": 8.8,
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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 reached only through local DRM interfaces on Qualcomm devices: MSM_GEM_SUBMIT and framebuffer/atomic display commits pin GEM buffers into the display or legacy kernel-managed GPU IOMMU domain via ioctl on /dev/dri/renderD* or /dev/dri/card*.\nAC:L - An attacker can reliably force iommu_map_sgtable() failures by exhausting IOMMU page-table space or memory through repeated GEM allocations and mapping operations they fully control, without depending on victim timing or uncontrollable layout.\nPR:L - Exploitation requires only unprivileged access to the DRM render/display node (DRM_RENDER_ALLOW ioctls); on Android phones any app with GPU access can trigger the mapping path without root or special capabilities.\nUI:N - No victim interaction is required beyond the attacker's own DRM/GPU or framebuffer operations; the vulnerable msm_iommu_map() runs during their own buffer pin/map requests.\nS:C - Incorrect handling of IOMMU mapping errors can leave the display engine or Adreno GPU operating on IOVAs without the intended translation, crossing the IOMMU/DMA security boundary between device DMA and system physical memory.\nC:H - If a failed IOMMU mapping is treated as successful, GPU or display DMA can read physical pages outside the intended buffer, enabling arbitrary physical memory disclosure; this is the same error-sign-conversion class that caused silent mapping failure in the parallel tegra fix.\nI:H - A successful-but-unmapped or mis-mapped IOVA lets the GPU (IOMMU_WRITE on typical buffers) or display write-back path corrupt physical memory outside the caller's GEM object, providing a DMA-based write primitive.\nA:H - Repeated IOMMU mapping failures mishandled on the display or GPU path can cause IOMMU fault storms, GPU hangs, display pipeline stalls, or kernel WARN/oops conditions during fault handling."
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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/msm_iommu.c"
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],
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"versions": [
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{
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"version": "ad8f36e4b6b1c826a0daa5fda2c5839205b5aa8b",
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"lessThan": "3c2cdb7c07f664b77e2a75b50793b845d5742efa",
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"status": "affected",
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"versionType": "git"
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},
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"version": "ad8f36e4b6b1c826a0daa5fda2c5839205b5aa8b",
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"lessThan": "3e3c3c95ef4fe17231a9149e27bcfc9dae2dd89f",
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"status": "affected",
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"status": "affected",
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"status": "affected",
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"versionType": "git"
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{
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"version": "ad8f36e4b6b1c826a0daa5fda2c5839205b5aa8b",
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"status": "affected",
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"status": "affected",
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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/msm/msm_iommu.c"
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],
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"versions": [
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{
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"version": "5.15",
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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": "5.15",
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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": "5.15.209",
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"lessThanOrEqual": "5.15.*",
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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": "6.1.175",
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"lessThanOrEqual": "6.1.*",
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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": "6.6.142",
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"lessThanOrEqual": "6.6.*",
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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": "6.12.92",
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"lessThanOrEqual": "6.12.*",
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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": "6.18.34",
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"lessThanOrEqual": "6.18.*",
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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": "7.0.11",
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"lessThanOrEqual": "7.0.*",
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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": "7.1",
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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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"references": [
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"url": "https://git.kernel.org/stable/c/3c2cdb7c07f664b77e2a75b50793b845d5742efa"
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}
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],
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"title": "drm/msm: Fix iommu_map_sgtable() return value check and avoid WARN",
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