{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "965544150d1cadf0e8f5bb6c13c19697e46e1429"
            },
            {
              "fixed": "1eb4f796695be39e0b5c4383350033ced9ade703"
            },
            {
              "fixed": "9109b7935b9c058b75348610ef8437c52f9020e3"
            },
            {
              "fixed": "d5ed8749168ad13c0dbaa8300f68d854b6076966"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.16.0"
            },
            {
              "fixed": "6.18.44"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80701.json"
  },
  "details": "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.",
  "id": "CVE-2026-80701",
  "modified": "2026-08-30T03:30:53.033780394Z",
  "published": "2026-08-28T06:53:04.652Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1eb4f796695be39e0b5c4383350033ced9ade703"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9109b7935b9c058b75348610ef8437c52f9020e3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d5ed8749168ad13c0dbaa8300f68d854b6076966"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80701.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-80701"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "drm/vmwgfx: enforce cursor size limits for MOB cursors"
}