CVE-2026-80701 (GCVE-0-2026-80701)
Vulnerability from cvelistv5 – Published: 2026-08-28 06:53 – Updated: 2026-08-28 06:53
VLAI
EPSS
VEX
Title
drm/vmwgfx: enforce cursor size limits for MOB cursors
Summary
In the Linux kernel, the following vulnerability has been resolved:
drm/vmwgfx: enforce cursor size limits for MOB cursors
vmw_cursor_plane_atomic_check() bounds cursor width and height only
on the legacy update path; the SVGA_CAP2_CURSOR_MOB path -- the
default on modern hosts -- accepts any size. When the requested size
exceeds SVGA_REG_CURSOR_MAX_DIMENSION or SVGA_REG_MOB_MAX_SIZE,
vmw_cursor_mob_get() returns -EINVAL and leaves vps->cursor.mob NULL.
Its return value is then discarded in vmw_cursor_plane_prepare_fb(),
so the subsequent vmw_cursor_update_mob() calls
vmw_bo_map_and_cache(NULL) and oopses inside
vmw_bo_map_and_cache_size() on the tbo.base.size load.
Reachable from any DRM master via DRM_IOCTL_MODE_CURSOR2 with a
sufficiently large width or height (e.g. cursor_max_dim + 1).
Reject oversized cursors in atomic_check for both MOB-backed cursor
update types. The MOB byte-size limit only applies to the
SVGA_CAP2_CURSOR_MOB path (vmw_cursor_mob_size() returns 0 for
GB_ONLY); compute the required MOB size in 64-bit to avoid overflow
when very large dimensions are requested.
In prepare_fb only call vmw_cursor_mob_get()/_map() for
VMW_CURSOR_UPDATE_MOB -- the GB_ONLY path uses bo->map.virtual
directly and would otherwise be silently downgraded to NONE on hosts
without SVGA_CAP2_CURSOR_MOB (where vmw_cursor_mob_get() always
returns -EINVAL). Degrade the update to NONE if vmw_cursor_mob_get()
or vmw_cursor_mob_map() fails so the update path does not run with a
NULL backing MOB.
Severity
No CVSS data available.
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
965544150d1cadf0e8f5bb6c13c19697e46e1429 , < 1eb4f796695be39e0b5c4383350033ced9ade703
(git)
Affected: 965544150d1cadf0e8f5bb6c13c19697e46e1429 , < 9109b7935b9c058b75348610ef8437c52f9020e3 (git) Affected: 965544150d1cadf0e8f5bb6c13c19697e46e1429 , < d5ed8749168ad13c0dbaa8300f68d854b6076966 (git) |
guessed | |
| Linux | Linux |
Affected:
6.16
Unaffected: 0 , < 6.16 (semver) Unaffected: 6.18.44 , ≤ 6.18.* (semver) Unaffected: 7.1.8 , ≤ 7.1.* (semver) Unaffected: 7.2 , ≤ * (original_commit_for_fix) |
guessed |
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/gpu/drm/vmwgfx/vmwgfx_cursor_plane.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "1eb4f796695be39e0b5c4383350033ced9ade703",
"status": "affected",
"version": "965544150d1cadf0e8f5bb6c13c19697e46e1429",
"versionType": "git"
},
{
"lessThan": "9109b7935b9c058b75348610ef8437c52f9020e3",
"status": "affected",
"version": "965544150d1cadf0e8f5bb6c13c19697e46e1429",
"versionType": "git"
},
{
"lessThan": "d5ed8749168ad13c0dbaa8300f68d854b6076966",
"status": "affected",
"version": "965544150d1cadf0e8f5bb6c13c19697e46e1429",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"drivers/gpu/drm/vmwgfx/vmwgfx_cursor_plane.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "6.16"
},
{
"lessThan": "6.16",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.44",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.1.*",
"status": "unaffected",
"version": "7.1.8",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.18.44",
"versionStartIncluding": "6.16",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "7.1.8",
"versionStartIncluding": "6.16",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "7.2",
"versionStartIncluding": "6.16",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/vmwgfx: enforce cursor size limits for MOB cursors\n\nvmw_cursor_plane_atomic_check() bounds cursor width and height only\non the legacy update path; the SVGA_CAP2_CURSOR_MOB path -- the\ndefault on modern hosts -- accepts any size. When the requested size\nexceeds SVGA_REG_CURSOR_MAX_DIMENSION or SVGA_REG_MOB_MAX_SIZE,\nvmw_cursor_mob_get() returns -EINVAL and leaves vps-\u003ecursor.mob NULL.\nIts return value is then discarded in vmw_cursor_plane_prepare_fb(),\nso the subsequent vmw_cursor_update_mob() calls\nvmw_bo_map_and_cache(NULL) and oopses inside\nvmw_bo_map_and_cache_size() on the tbo.base.size load.\n\nReachable from any DRM master via DRM_IOCTL_MODE_CURSOR2 with a\nsufficiently large width or height (e.g. cursor_max_dim + 1).\n\nReject oversized cursors in atomic_check for both MOB-backed cursor\nupdate types. The MOB byte-size limit only applies to the\nSVGA_CAP2_CURSOR_MOB path (vmw_cursor_mob_size() returns 0 for\nGB_ONLY); compute the required MOB size in 64-bit to avoid overflow\nwhen very large dimensions are requested.\n\nIn prepare_fb only call vmw_cursor_mob_get()/_map() for\nVMW_CURSOR_UPDATE_MOB -- the GB_ONLY path uses bo-\u003emap.virtual\ndirectly and would otherwise be silently downgraded to NONE on hosts\nwithout SVGA_CAP2_CURSOR_MOB (where vmw_cursor_mob_get() always\nreturns -EINVAL). Degrade the update to NONE if vmw_cursor_mob_get()\nor vmw_cursor_mob_map() fails so the update path does not run with a\nNULL backing MOB."
}
],
"providerMetadata": {
"dateUpdated": "2026-08-28T06:53:04.652Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/1eb4f796695be39e0b5c4383350033ced9ade703"
},
{
"url": "https://git.kernel.org/stable/c/9109b7935b9c058b75348610ef8437c52f9020e3"
},
{
"url": "https://git.kernel.org/stable/c/d5ed8749168ad13c0dbaa8300f68d854b6076966"
}
],
"title": "drm/vmwgfx: enforce cursor size limits for MOB cursors",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2026-80701",
"datePublished": "2026-08-28T06:53:04.652Z",
"dateReserved": "2026-08-26T14:34:25.786Z",
"dateUpdated": "2026-08-28T06:53:04.652Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2026-80701",
"date": "2026-08-28",
"epss": "0.00166",
"percentile": "0.06071"
},
"nvd": "{\"cve\":{\"id\":\"CVE-2026-80701\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-08-28T08:16:55.640\",\"lastModified\":\"2026-08-28T08:16:55.640\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\ndrm/vmwgfx: enforce cursor size limits for MOB cursors\\n\\nvmw_cursor_plane_atomic_check() bounds cursor width and height only\\non the legacy update path; the SVGA_CAP2_CURSOR_MOB path -- the\\ndefault on modern hosts -- accepts any size. When the requested size\\nexceeds SVGA_REG_CURSOR_MAX_DIMENSION or SVGA_REG_MOB_MAX_SIZE,\\nvmw_cursor_mob_get() returns -EINVAL and leaves vps-\u003ecursor.mob NULL.\\nIts return value is then discarded in vmw_cursor_plane_prepare_fb(),\\nso the subsequent vmw_cursor_update_mob() calls\\nvmw_bo_map_and_cache(NULL) and oopses inside\\nvmw_bo_map_and_cache_size() on the tbo.base.size load.\\n\\nReachable from any DRM master via DRM_IOCTL_MODE_CURSOR2 with a\\nsufficiently large width or height (e.g. cursor_max_dim + 1).\\n\\nReject oversized cursors in atomic_check for both MOB-backed cursor\\nupdate types. The MOB byte-size limit only applies to the\\nSVGA_CAP2_CURSOR_MOB path (vmw_cursor_mob_size() returns 0 for\\nGB_ONLY); compute the required MOB size in 64-bit to avoid overflow\\nwhen very large dimensions are requested.\\n\\nIn prepare_fb only call vmw_cursor_mob_get()/_map() for\\nVMW_CURSOR_UPDATE_MOB -- the GB_ONLY path uses bo-\u003emap.virtual\\ndirectly and would otherwise be silently downgraded to NONE on hosts\\nwithout SVGA_CAP2_CURSOR_MOB (where vmw_cursor_mob_get() always\\nreturns -EINVAL). Degrade the update to NONE if vmw_cursor_mob_get()\\nor vmw_cursor_mob_map() fails so the update path does not run with a\\nNULL backing MOB.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/gpu/drm/vmwgfx/vmwgfx_cursor_plane.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"965544150d1cadf0e8f5bb6c13c19697e46e1429\",\"lessThan\":\"1eb4f796695be39e0b5c4383350033ced9ade703\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"965544150d1cadf0e8f5bb6c13c19697e46e1429\",\"lessThan\":\"9109b7935b9c058b75348610ef8437c52f9020e3\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"965544150d1cadf0e8f5bb6c13c19697e46e1429\",\"lessThan\":\"d5ed8749168ad13c0dbaa8300f68d854b6076966\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/gpu/drm/vmwgfx/vmwgfx_cursor_plane.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"6.16\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"6.16\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.44\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.1.8\",\"lessThanOrEqual\":\"7.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.2\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/1eb4f796695be39e0b5c4383350033ced9ade703\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/9109b7935b9c058b75348610ef8437c52f9020e3\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/d5ed8749168ad13c0dbaa8300f68d854b6076966\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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