298 lines
16 KiB
JSON
298 lines
16 KiB
JSON
{
|
|
"dataType": "CVE_RECORD",
|
|
"dataVersion": "5.2",
|
|
"cveMetadata": {
|
|
"cveId": "CVE-2026-74443",
|
|
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
|
|
"state": "PUBLISHED",
|
|
"assignerShortName": "Linux",
|
|
"dateReserved": "2026-08-15T05:44:03.898Z",
|
|
"datePublished": "2026-08-15T12:26:50.826Z",
|
|
"dateUpdated": "2026-10-16T19:05:45.672Z"
|
|
},
|
|
"containers": {
|
|
"cna": {
|
|
"providerMetadata": {
|
|
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
|
|
"shortName": "Linux",
|
|
"dateUpdated": "2026-08-19T16:36:35.874Z"
|
|
},
|
|
"descriptions": [
|
|
{
|
|
"lang": "en",
|
|
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/vmwgfx: bound DMA command body size against suffix pointer\n\nvmw_cmd_dma() locates the DMA suffix at\n\n\t(unsigned long) &cmd->body + header->size - sizeof(*suffix)\n\nwithout checking that header->size is large enough to contain both\ncmd->body and the suffix. An undersized header makes the suffix\npointer underflow back into the previous command in the bounce\nbuffer. The verifier later writes suffix->maximumOffset, clobbering\nverified fields of an already-relocated earlier command -- a TOCTOU\non the device-visible command stream that lets one command rewrite\nanother's GMR id, surface id, or other authenticated fields.\n\nReject the command if the body is too small for the suffix to fit."
|
|
}
|
|
],
|
|
"metrics": [
|
|
{
|
|
"cvssV3_1": {
|
|
"version": "3.1",
|
|
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
|
|
"baseScore": 8.8,
|
|
"baseSeverity": "HIGH"
|
|
},
|
|
"scenarios": [
|
|
{
|
|
"lang": "en",
|
|
"value": "AV:L - Exploitation requires issuing DRM_IOCTL_VMW_EXECBUF with a crafted SVGA command batch via /dev/dri/card* or /dev/dri/renderD*, the standard local DRM render-node path for the vmwgfx driver in VMware virtual machines.\nAC:L - The attacker fully controls execbuf command layout and can set an undersized SVGA_3D_CMD_SURFACE_DMA header->size so the suffix pointer underflows into the prior command; no races, rare configs, or victim-dependent heap layout are required.\nPR:L - VMW_EXECBUF is registered with DRM_RENDER_ALLOW, so any local user with access to the DRM render node (typically membership in the render/video group on VMware guests) can reach vmw_cmd_dma without real root in the init namespace.\nUI:N - No victim interaction is required beyond the attacker opening the DRM device and submitting a malicious execbuf ioctl; exploitation does not depend on another user mounting filesystems or performing other actions.\nS:C - The bug is a TOCTOU on the device-visible SVGA command stream: verifier writes clobber already-checked fields (GMR id, surface id, DMA bounds) in the bounce buffer before submission to the VMware virtual GPU, bypassing guest/host isolation enforced by command authentication.\nC:H - Rewriting authenticated GMR/surface identifiers or inflating maximumOffset can authorize SVGA surface DMA reads (including SVGA3D_READ_HOST_VRAM) beyond validated guest buffer bounds, yielding arbitrary guest memory disclosure and plausible host VRAM reads via the virtual device backend.\nI:H - Clobbering verified command fields lets a later command rewrite another's GMR id, surface id, or DMA limit so the hypervisor executes unauthorized SVGA3D_WRITE_HOST_VRAM or guest GMR DMA, enabling arbitrary memory write and code-execution primitives typical of kernel heap corruption.\nA:H - Corrupting the bounce-buffer command stream before FIFO submission can panic the guest kernel (invalid SVGA commands/resources) and enables repeatable denial of service; memory corruption in the verifier path is independently rated High per kernel CVSS guidance."
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"affected": [
|
|
{
|
|
"product": "Linux",
|
|
"vendor": "Linux",
|
|
"defaultStatus": "unaffected",
|
|
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
|
|
"programFiles": [
|
|
"drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c"
|
|
],
|
|
"versions": [
|
|
{
|
|
"version": "4e4ddd47774313accc86b233d6ca2c6a9037a671",
|
|
"lessThan": "eb20f418933bea53375843b27b4022c1810be63b",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "4e4ddd47774313accc86b233d6ca2c6a9037a671",
|
|
"lessThan": "fcd1e56e7816b31a1050ccc67df722b20f6bb15d",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "4e4ddd47774313accc86b233d6ca2c6a9037a671",
|
|
"lessThan": "a4a37080a5ac777b59306cfcdf854cc05d7604d4",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "4e4ddd47774313accc86b233d6ca2c6a9037a671",
|
|
"lessThan": "036e16ada95389bdc30f41068af04c1d0872fad0",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "4e4ddd47774313accc86b233d6ca2c6a9037a671",
|
|
"lessThan": "d5d7ada4e1296b00d89fe82b2ca850cc7809d6f7",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "4e4ddd47774313accc86b233d6ca2c6a9037a671",
|
|
"lessThan": "7e40e6120fb232a10b543ffd994e5c6d8f3a2cc6",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "4e4ddd47774313accc86b233d6ca2c6a9037a671",
|
|
"lessThan": "9759da60e38d7b9db44dc92713e4e0391883d221",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "4e4ddd47774313accc86b233d6ca2c6a9037a671",
|
|
"lessThan": "f4f1db96bfd68b81053693ba53405b6f510ac16c",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"product": "Linux",
|
|
"vendor": "Linux",
|
|
"defaultStatus": "affected",
|
|
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
|
|
"programFiles": [
|
|
"drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c"
|
|
],
|
|
"versions": [
|
|
{
|
|
"version": "2.6.33",
|
|
"status": "affected"
|
|
},
|
|
{
|
|
"version": "0",
|
|
"lessThan": "2.6.33",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "5.10.265",
|
|
"lessThanOrEqual": "5.10.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "5.15.216",
|
|
"lessThanOrEqual": "5.15.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.1.183",
|
|
"lessThanOrEqual": "6.1.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.6.151",
|
|
"lessThanOrEqual": "6.6.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.12.103",
|
|
"lessThanOrEqual": "6.12.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.18.44",
|
|
"lessThanOrEqual": "6.18.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "7.1.8",
|
|
"lessThanOrEqual": "7.1.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "7.2",
|
|
"lessThanOrEqual": "*",
|
|
"status": "unaffected",
|
|
"versionType": "original_commit_for_fix"
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"cpeApplicability": [
|
|
{
|
|
"nodes": [
|
|
{
|
|
"operator": "OR",
|
|
"negate": false,
|
|
"cpeMatch": [
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "2.6.33",
|
|
"versionEndExcluding": "5.10.265"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "2.6.33",
|
|
"versionEndExcluding": "5.15.216"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "2.6.33",
|
|
"versionEndExcluding": "6.1.183"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "2.6.33",
|
|
"versionEndExcluding": "6.6.151"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "2.6.33",
|
|
"versionEndExcluding": "6.12.103"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "2.6.33",
|
|
"versionEndExcluding": "6.18.44"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "2.6.33",
|
|
"versionEndExcluding": "7.1.8"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "2.6.33",
|
|
"versionEndExcluding": "7.2"
|
|
}
|
|
]
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"references": [
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/eb20f418933bea53375843b27b4022c1810be63b"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/fcd1e56e7816b31a1050ccc67df722b20f6bb15d"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/a4a37080a5ac777b59306cfcdf854cc05d7604d4"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/036e16ada95389bdc30f41068af04c1d0872fad0"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/d5d7ada4e1296b00d89fe82b2ca850cc7809d6f7"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/7e40e6120fb232a10b543ffd994e5c6d8f3a2cc6"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/9759da60e38d7b9db44dc92713e4e0391883d221"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/f4f1db96bfd68b81053693ba53405b6f510ac16c"
|
|
}
|
|
],
|
|
"title": "drm/vmwgfx: bound DMA command body size against suffix pointer",
|
|
"x_generator": {
|
|
"engine": "bippy-1.2.0"
|
|
}
|
|
},
|
|
"adp": [
|
|
{
|
|
"metrics": [
|
|
{
|
|
"other": {
|
|
"type": "ssvc",
|
|
"content": {
|
|
"id": "CVE-2026-74443",
|
|
"role": "CISA Coordinator",
|
|
"options": [
|
|
{
|
|
"Exploitation": "none"
|
|
},
|
|
{
|
|
"Automatable": "no"
|
|
},
|
|
{
|
|
"Technical Impact": "total"
|
|
}
|
|
],
|
|
"version": "2.0.3",
|
|
"timestamp": "2026-10-16T18:56:31.688956Z"
|
|
}
|
|
}
|
|
}
|
|
],
|
|
"title": "CISA ADP Vulnrichment",
|
|
"providerMetadata": {
|
|
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
|
|
"shortName": "CISA-ADP",
|
|
"dateUpdated": "2026-10-16T19:05:45.672Z"
|
|
}
|
|
}
|
|
]
|
|
}
|
|
} |