257 lines
14 KiB
JSON
257 lines
14 KiB
JSON
{
|
|
"dataType": "CVE_RECORD",
|
|
"dataVersion": "5.2",
|
|
"cveMetadata": {
|
|
"cveId": "CVE-2026-80700",
|
|
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
|
|
"state": "PUBLISHED",
|
|
"assignerShortName": "Linux",
|
|
"dateReserved": "2026-08-26T14:34:25.786Z",
|
|
"datePublished": "2026-08-28T06:53:04.050Z",
|
|
"dateUpdated": "2026-10-16T19:26:33.894Z"
|
|
},
|
|
"containers": {
|
|
"cna": {
|
|
"providerMetadata": {
|
|
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
|
|
"shortName": "Linux",
|
|
"dateUpdated": "2026-08-29T06:22:20.794Z"
|
|
},
|
|
"descriptions": [
|
|
{
|
|
"lang": "en",
|
|
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/vmwgfx: validate external BO copy bounds for both stride paths\n\nvmw_external_bo_copy() trusts caller-supplied offsets, strides, and\nheights and operates on imported dma-buf vmaps:\n\n - The equal-stride memcpy() bound was clamped after subtracting the\n offsets from dst_size and src_size; an offset larger than the BO\n size wraps the unsigned subtraction to a huge value and the\n resulting memcpy() runs off the end of the vmap. dst_stride *\n height is also a u32 multiplication that can overflow.\n - The non-equal-stride row-by-row path had no bound at all. The\n loop touches bytes through offset + (height - 1) * stride +\n width_in_bytes, with only a WARN_ON(dst_stride < width_in_bytes),\n and could likewise step past the end of either mapping.\n\nThe offsets and strides are derived from STDU/SOU plane state, so a\nconfigured CRTC submitting a crafted atomic commit on an imported\nframebuffer can reach this path.\n\nValidate the exact row-copy endpoint against each BO's size up front\nusing check_mul_overflow() and check_add_overflow(). Use the bulk\nmemcpy() path only when width_in_bytes covers the whole stride;\notherwise copy one row at a time so partial-row updates near the bottom\nof a framebuffer remain valid. Also reject zero strides and stride <\nwidth_in_bytes, both of which the row-by-row path cannot represent\nsafely."
|
|
}
|
|
],
|
|
"metrics": [
|
|
{
|
|
"cvssV3_1": {
|
|
"version": "3.1",
|
|
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
|
|
"baseScore": 7.8,
|
|
"baseSeverity": "HIGH"
|
|
},
|
|
"scenarios": [
|
|
{
|
|
"lang": "en",
|
|
"value": "AV:L - The flaw is reached only via local DRM KMS ioctls on /dev/dri/card0: DRM_IOCTL_MODE_ATOMIC drives STDU/SOU plane updates that call vmw_bo_cpu_blit() -> vmw_external_bo_copy(); vmwgfx is not exposed through any network, adjacent-radio, or physical-bus interface.\nAC:L - An attacker with DRM master fully controls atomic plane state, damage clips, pitches, and prime-imported framebuffer geometry that derive dst/src offsets, strides, and height; crafted values reliably trigger unsigned wrap or unbounded row copies without races or victim-dependent layout.\nPR:L - DRM_IOCTL_MODE_ATOMIC is gated by DRM_MASTER, not real root; on VMware guests and VDI desktops the logged-in session user holding master (typical video/render group access) can prime-import a dma-buf, configure a CRTC, and submit the malicious atomic commit.\nUI:N - Exploitation requires only the attacker opening the DRM device and issuing crafted atomic commits with an imported framebuffer; no actions by another user such as mounting filesystems or opening files are needed.\nS:U - Out-of-bounds memcpy corrupts adjacent guest-kernel memory around imported dma-buf vmaps and internal display BO mappings, enabling guest-kernel privilege escalation; impact stays within the guest kernel security domain and does not directly cross a VM/host or IOMMU boundary.\nC:H - The bug performs unchecked memcpy from attacker-influenced source mappings past buffer ends (equal-stride unsigned underflow and unbounded row-by-row copies), yielding an out-of-bounds kernel read primitive that can disclose adjacent heap/vmalloc data including kernel pointers.\nI:H - The same unchecked copies write past the end of destination vmaps, providing an out-of-bounds kernel write primitive that can corrupt adjacent objects and be developed into arbitrary memory modification or code execution.\nA:H - Large out-of-bounds memcpy operations can immediately corrupt critical kernel structures or touch unmapped pages, causing kernel oops/panic; the atomic-commit trigger can be repeated to deny availability after reboot."
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"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_blit.c"
|
|
],
|
|
"versions": [
|
|
{
|
|
"version": "9a9716bbbf3dd6b6cbefba3abcc89af8b72631f4",
|
|
"lessThan": "4e0f669e2951b742239c6fe847fcc406fe78748d",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "50f1199250912568606b3778dc56646c10cb7b04",
|
|
"lessThan": "e7b25a6011781ebfdbc458552cae6d4156732771",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "50f1199250912568606b3778dc56646c10cb7b04",
|
|
"lessThan": "042ca38779554687fc32b66a28328e0d9a36c58f",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "50f1199250912568606b3778dc56646c10cb7b04",
|
|
"lessThan": "5e4a2d15637a906cbd9bc98e0bf969f5f713e344",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "50f1199250912568606b3778dc56646c10cb7b04",
|
|
"lessThan": "706c93c5813caabbb0d0a576c017d15aeec2c113",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "5c12391ee1ab59cb2f3be3f1f5e6d0fc0c2dc854",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "6.6.49",
|
|
"lessThan": "6.6.151",
|
|
"status": "affected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.10.8",
|
|
"lessThan": "6.11",
|
|
"status": "affected",
|
|
"versionType": "semver"
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"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_blit.c"
|
|
],
|
|
"versions": [
|
|
{
|
|
"version": "6.11",
|
|
"status": "affected"
|
|
},
|
|
{
|
|
"version": "0",
|
|
"lessThan": "6.11",
|
|
"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": "6.6.49",
|
|
"versionEndExcluding": "6.6.151"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "6.11",
|
|
"versionEndExcluding": "6.12.103"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "6.11",
|
|
"versionEndExcluding": "6.18.44"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "6.11",
|
|
"versionEndExcluding": "7.1.8"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "6.11",
|
|
"versionEndExcluding": "7.2"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "6.10.8"
|
|
}
|
|
]
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"references": [
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/4e0f669e2951b742239c6fe847fcc406fe78748d"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/e7b25a6011781ebfdbc458552cae6d4156732771"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/042ca38779554687fc32b66a28328e0d9a36c58f"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/5e4a2d15637a906cbd9bc98e0bf969f5f713e344"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/706c93c5813caabbb0d0a576c017d15aeec2c113"
|
|
}
|
|
],
|
|
"title": "drm/vmwgfx: validate external BO copy bounds for both stride paths",
|
|
"x_generator": {
|
|
"engine": "bippy-1.2.0"
|
|
}
|
|
},
|
|
"adp": [
|
|
{
|
|
"metrics": [
|
|
{
|
|
"other": {
|
|
"type": "ssvc",
|
|
"content": {
|
|
"id": "CVE-2026-80700",
|
|
"role": "CISA Coordinator",
|
|
"options": [
|
|
{
|
|
"Exploitation": "none"
|
|
},
|
|
{
|
|
"Automatable": "no"
|
|
},
|
|
{
|
|
"Technical Impact": "total"
|
|
}
|
|
],
|
|
"version": "2.0.3",
|
|
"timestamp": "2026-10-16T19:20:14.904770Z"
|
|
}
|
|
}
|
|
}
|
|
],
|
|
"title": "CISA ADP Vulnrichment",
|
|
"providerMetadata": {
|
|
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
|
|
"shortName": "CISA-ADP",
|
|
"dateUpdated": "2026-10-16T19:26:33.894Z"
|
|
}
|
|
}
|
|
]
|
|
}
|
|
} |