310 lines
15 KiB
JSON
310 lines
15 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-2026-68446",
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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": "2026-07-30T09:28:09.395Z",
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"datePublished": "2026-08-12T00:07:37.385Z",
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"dateUpdated": "2026-10-19T21:09:10.643Z"
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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": "2026-08-19T16:35:40.576Z"
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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/vmwgfx: Validate vmw_surface_metadata::array_size\n\nThis field comes from userspace and should be validated against specific\nlimits depending on which Shader Model (SM) is available."
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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 reached through the DRM_IOCTL_VMW_GB_SURFACE_CREATE/_EXT ioctls on the vmwgfx render node (/dev/dri/renderD128), i.e. local access to the device file on a VMware guest; no network or physical access is involved.\nAC:L - The attacker directly supplies array_size, mip_levels and base_size in a single ioctl and can deterministically choose values that wrap the 32-bit size/subresource computations; no race or uncontrolled precondition is required.\nPR:L - Both ioctls are registered DRM_RENDER_ALLOW, so an unprivileged local user (or containerized workload) holding the normal render-node permissions can call them without DRM master, root, or any capability.\nUI:N - Exploitation is entirely attacker-driven via ioctl calls on an already-open render node; no action by another user or administrator is needed.\nS:U - The unvalidated value corrupts guest kernel memory and device-command state within the same kernel security authority; no VM/IOMMU or sandbox boundary is crossed by the flaw itself.\nC:H - The wrapped res->guest_memory_size makes the backing buffer far smaller than the surface the host device is told to service, and the undersized dirty->boxes array is indexed out of bounds, giving out-of-bounds reads of adjacent kernel heap data that can be leaked back through surface contents.\nI:H - The u32 overflows in vmw_surface_get_serialized_size() and num_layers*num_mip yield an undersized backing BO and dirty-tracking array, producing controlled out-of-bounds heap writes (SVGA3dBox data and device DMA past the buffer) usable for heap corruption and privilege escalation.\nA:H - Out-of-bounds writes past kvzalloc'd dirty trackers and BO-sized mismatches reliably corrupt kernel heap metadata, causing oopses/panics; huge array_size values also drive enormous allocations, so a local user can crash the guest kernel."
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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/vmwgfx/vmwgfx_surface.c"
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],
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"versions": [
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{
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"version": "504901dbb0b565fcbe466b0c56f3131586df5afd",
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"lessThan": "e949adf2d42678fb391a41db277e2fcb12090566",
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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": "504901dbb0b565fcbe466b0c56f3131586df5afd",
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"lessThan": "0403cec2aff8037bc246cf9a0831eb169ddcd9df",
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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": "504901dbb0b565fcbe466b0c56f3131586df5afd",
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"lessThan": "aded8463466ede7a7fbd1bbf821756c67c83e89b",
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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": "504901dbb0b565fcbe466b0c56f3131586df5afd",
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"lessThan": "5ff94e1279176b539d451e3e754fdcbd1a8d520a",
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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": "504901dbb0b565fcbe466b0c56f3131586df5afd",
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"lessThan": "71779fe8bf403a9b3e28dc59229fa556db32d35d",
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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": "504901dbb0b565fcbe466b0c56f3131586df5afd",
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"lessThan": "b1379f0c42b88cb60b9f3757eb5d1e73ad460ed8",
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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": "504901dbb0b565fcbe466b0c56f3131586df5afd",
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"lessThan": "6910ccaf41678f7761ba2e57d72b77d056320b4d",
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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": "504901dbb0b565fcbe466b0c56f3131586df5afd",
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"lessThan": "a4f55260f7f7d4dc4d0ee55063dfb0c457b77991",
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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/vmwgfx/vmwgfx_surface.c"
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],
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"versions": [
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{
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"version": "5.7",
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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": "5.7",
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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": "5.10.265",
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"lessThanOrEqual": "5.10.*",
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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": "5.15.216",
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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": "6.1.183",
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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": "6.6.148",
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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": "6.12.101",
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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": "6.18.42",
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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": "7.1.6",
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"lessThanOrEqual": "7.1.*",
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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": "7.2",
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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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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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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": "5.7",
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"versionEndExcluding": "5.10.265"
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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": "5.7",
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"versionEndExcluding": "5.15.216"
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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": "5.7",
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"versionEndExcluding": "6.1.183"
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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": "5.7",
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"versionEndExcluding": "6.6.148"
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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": "5.7",
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"versionEndExcluding": "6.12.101"
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionEndExcluding": "6.18.42"
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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": "5.7",
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"versionEndExcluding": "7.1.6"
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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": "5.7",
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"versionEndExcluding": "7.2"
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}
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]
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}
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/e949adf2d42678fb391a41db277e2fcb12090566"
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},
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{
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"url": "https://git.kernel.org/stable/c/0403cec2aff8037bc246cf9a0831eb169ddcd9df"
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},
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{
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"url": "https://git.kernel.org/stable/c/aded8463466ede7a7fbd1bbf821756c67c83e89b"
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},
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{
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"url": "https://git.kernel.org/stable/c/5ff94e1279176b539d451e3e754fdcbd1a8d520a"
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},
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{
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"url": "https://git.kernel.org/stable/c/71779fe8bf403a9b3e28dc59229fa556db32d35d"
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},
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{
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"url": "https://git.kernel.org/stable/c/b1379f0c42b88cb60b9f3757eb5d1e73ad460ed8"
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},
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{
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"url": "https://git.kernel.org/stable/c/6910ccaf41678f7761ba2e57d72b77d056320b4d"
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},
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{
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"url": "https://git.kernel.org/stable/c/a4f55260f7f7d4dc4d0ee55063dfb0c457b77991"
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}
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],
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"title": "drm/vmwgfx: Validate vmw_surface_metadata::array_size",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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},
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"adp": [
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{
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"id": "CVE-2026-68446",
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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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{
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"Technical Impact": "total"
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}
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],
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"version": "2.0.3",
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"timestamp": "2026-10-16T15:49:03.361891Z"
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}
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}
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}
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],
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"problemTypes": [
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{
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"descriptions": [
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{
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"lang": "en",
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"type": "CWE",
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"cweId": "CWE-20",
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"description": "CWE-20 Improper Input Validation"
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}
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]
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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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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2026-10-19T21:09:10.643Z"
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}
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}
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]
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}
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} |