264 lines
14 KiB
JSON
264 lines
14 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-2026-99002",
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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": "2026-09-25T10:25:14.385Z",
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"datePublished": "2026-10-23T12:20:22.763Z",
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"dateUpdated": "2026-10-30T12:40:48.116Z"
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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": "2026-10-30T12:40:48.116Z"
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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 pitch coming from userspace\n\nValidate the pitch, alongside the box dimensions before trying\nto copy data from the underlying surface. Fixes possible\nout of bounds reads with cursor snooping."
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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 - DRM_IOCTL_VMW_EXECBUF passes a locally supplied SVGA_3D_CMD_SURFACE_DMA through vmw_execbuf_process(), vmw_cmd_dma(), and vmw_kms_cursor_snoop(); the malformed guest.pitch and copy box originate in this ioctl, not a network protocol.\nAC:L - The attacker can create the required 64x64 A8R8G8B8 scanout surface and choose the box, pitch, and source BO. A 63x64 box with pitch 256 deterministically reaches the corrupting partial-copy loop without a race or attacker-uncontrolled condition.\nPR:L - VMW_CREATE_SURFACE, VMW_ALLOC_DMABUF, and VMW_EXECBUF are DRM_RENDER_ALLOW on a DRIVER_RENDER device; drm_ioctl_permit() therefore requires no DRM master, authentication, or capability from an unprivileged render-node client.\nUI:N - The attacker creates the surface and BO and submits the malformed DMA command through their own file descriptor; no victim must mount, open, or display anything.\nS:U - vmw_kms_cursor_snoop() corrupts the guest kernel's own cursor-snooper allocation from guest userspace. The code demonstrates neither host-memory corruption nor a guest-to-host or IOMMU-boundary escape.\nC:H - The unchecked pitch causes out-of-bounds source reads, while the attacker-controlled heap overwrite can corrupt neighboring pointer-bearing objects and be developed into arbitrary guest-kernel read primitives.\nI:H - snooper.image is a u32 pointer, but the vulnerable loop uses the 256-byte image_pitch as an element stride; a 63x64 copy writes controlled 252-byte rows at 1024-byte intervals far beyond the 16-KiB allocation, enabling control-flow hijacking.\nA:H - An excessive pitch can fault while reading beyond the TTM mapping, and the partial-copy destination bug can overwrite roughly 48 KiB beyond the snooper image, causing an oops or kernel panic."
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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_cursor_plane.c"
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],
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"versions": [
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{
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"version": "2ac863719e518ae1a8f328849e64ea26a222f079",
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"lessThan": "073437615a8da528935146ca6a17292c0ca8ce19",
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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": "2ac863719e518ae1a8f328849e64ea26a222f079",
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"lessThan": "f54b41644744f72c86e44a21733ac6fc910ca133",
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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": "2ac863719e518ae1a8f328849e64ea26a222f079",
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"lessThan": "cbf7616464334b217ed07b8adacaed549f2a9433",
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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": "2ac863719e518ae1a8f328849e64ea26a222f079",
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"lessThan": "db6fbc2b77849e3c3c2bc115ea9ac925c4625a0d",
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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": "2ac863719e518ae1a8f328849e64ea26a222f079",
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"lessThan": "f6d9c8abdf06a9c7efa799532d66ed8d5a50734c",
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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": "2ac863719e518ae1a8f328849e64ea26a222f079",
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"lessThan": "76e5ddd7d9822c8c3492e0f50ba8978e093069ad",
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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": "2ac863719e518ae1a8f328849e64ea26a222f079",
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"lessThan": "fcb137f6e7ed769f7ecad84364a33c451371b602",
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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": "2ac863719e518ae1a8f328849e64ea26a222f079",
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"lessThan": "21bc51cb89ced74d6645a138cc2f21184bc75094",
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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_cursor_plane.c"
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],
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"versions": [
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{
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"version": "3.2",
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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": "3.2",
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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": "5.10.273",
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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": "5.15.224",
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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": "6.1.191",
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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": "6.6.160",
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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": "6.12.114",
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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": "6.18.57",
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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": "7.2.11",
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"lessThanOrEqual": "7.2.*",
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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": "7.3",
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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": "3.2",
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"versionEndExcluding": "5.10.273"
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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": "3.2",
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"versionEndExcluding": "5.15.224"
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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": "3.2",
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"versionEndExcluding": "6.1.191"
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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": "3.2",
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"versionEndExcluding": "6.6.160"
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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": "3.2",
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"versionEndExcluding": "6.12.114"
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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": "3.2",
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"versionEndExcluding": "6.18.57"
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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": "3.2",
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"versionEndExcluding": "7.2.11"
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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": "3.2",
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"versionEndExcluding": "7.3"
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}
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]
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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/073437615a8da528935146ca6a17292c0ca8ce19"
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},
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{
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"url": "https://git.kernel.org/stable/c/f54b41644744f72c86e44a21733ac6fc910ca133"
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},
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{
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"url": "https://git.kernel.org/stable/c/cbf7616464334b217ed07b8adacaed549f2a9433"
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},
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{
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"url": "https://git.kernel.org/stable/c/db6fbc2b77849e3c3c2bc115ea9ac925c4625a0d"
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},
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{
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"url": "https://git.kernel.org/stable/c/f6d9c8abdf06a9c7efa799532d66ed8d5a50734c"
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},
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{
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"url": "https://git.kernel.org/stable/c/76e5ddd7d9822c8c3492e0f50ba8978e093069ad"
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},
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{
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"url": "https://git.kernel.org/stable/c/fcb137f6e7ed769f7ecad84364a33c451371b602"
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},
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{
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"url": "https://git.kernel.org/stable/c/21bc51cb89ced74d6645a138cc2f21184bc75094"
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}
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],
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"title": "drm/vmwgfx: validate pitch coming from userspace",
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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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}
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} |