{"api_version":"1","generated_at":"2026-08-28T16:11:06+00:00","cve":"CVE-2026-80701","urls":{"html":"https://cve.report/CVE-2026-80701","api":"https://cve.report/api/cve/CVE-2026-80701.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-80701","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-80701"},"summary":{"title":"drm/vmwgfx: enforce cursor size limits for MOB cursors","description":"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->cursor.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->map.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.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-08-28 08:16:55","updated_at":"2026-08-28 08:16:55"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/d5ed8749168ad13c0dbaa8300f68d854b6076966","name":"https://git.kernel.org/stable/c/d5ed8749168ad13c0dbaa8300f68d854b6076966","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/1eb4f796695be39e0b5c4383350033ced9ade703","name":"https://git.kernel.org/stable/c/1eb4f796695be39e0b5c4383350033ced9ade703","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/9109b7935b9c058b75348610ef8437c52f9020e3","name":"https://git.kernel.org/stable/c/9109b7935b9c058b75348610ef8437c52f9020e3","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-80701","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-80701","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 965544150d1cadf0e8f5bb6c13c19697e46e1429 1eb4f796695be39e0b5c4383350033ced9ade703 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 965544150d1cadf0e8f5bb6c13c19697e46e1429 9109b7935b9c058b75348610ef8437c52f9020e3 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 965544150d1cadf0e8f5bb6c13c19697e46e1429 d5ed8749168ad13c0dbaa8300f68d854b6076966 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.16","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.16 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.44 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1.8 7.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"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->cursor.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->map.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"},"nvd":{"publishedDate":"2026-08-28 08:16:55","lastModifiedDate":"2026-08-28 08:16:55","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"80701","Ordinal":"1","Title":"drm/vmwgfx: enforce cursor size limits for MOB cursors","CVE":"CVE-2026-80701","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"80701","Ordinal":"1","NoteData":"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->cursor.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->map.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.","Type":"Description","Title":"drm/vmwgfx: enforce cursor size limits for MOB cursors"}]}}}