{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "7a73ba7469cbea631050094fd14f73acebb97cf9"
            },
            {
              "fixed": "2666cddf0dd218aa9bd1f99db688d1b532eac21a"
            },
            {
              "fixed": "fc0c02f510e41650df3479f96e257acf87d8a20a"
            },
            {
              "fixed": "dc0be7662b7b0ce28cb5eea864737793ed7b9e70"
            },
            {
              "fixed": "c77cf8edae2bd3a1599115301cc7c98d0c78e731"
            },
            {
              "fixed": "85891d174707d8bddcec7a888fb4e1d17def34f3"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.6.33"
            },
            {
              "fixed": "6.6.151"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.103"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "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/2026/74xxx/CVE-2026-74444.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/vmwgfx: validate DRAW_PRIMITIVES header size before division\n\nvmw_cmd_draw() computes\n\n\tmaxnum = (header-\u003esize - sizeof(cmd-\u003ebody)) / sizeof(*decl);\n\nwhere header-\u003esize is u32 and is taken straight from the user-supplied\ncommand stream.  When header-\u003esize is less than sizeof(cmd-\u003ebody) the\nunsigned subtraction wraps to nearly 4 GiB, producing a huge maxnum.\nAny user-controlled cmd-\u003ebody.numVertexDecls then passes the bound and\nthe loop dereferences decl[i] far past the end of the kernel command\nbounce buffer, producing an out-of-bounds read of kernel memory.\n\nReject undersized headers up front.",
  "id": "CVE-2026-74444",
  "modified": "2026-08-18T03:31:01.617896851Z",
  "published": "2026-08-15T12:26:51.443Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2666cddf0dd218aa9bd1f99db688d1b532eac21a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/85891d174707d8bddcec7a888fb4e1d17def34f3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c77cf8edae2bd3a1599115301cc7c98d0c78e731"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/dc0be7662b7b0ce28cb5eea864737793ed7b9e70"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fc0c02f510e41650df3479f96e257acf87d8a20a"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74444.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-74444"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "drm/vmwgfx: validate DRAW_PRIMITIVES header size before division"
}