{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "7b0062036c3b71b4a69e244ecf0502c06c4cf5f0"
            },
            {
              "fixed": "7c701778c6a369769992614dac8dc00c8ac72afc"
            },
            {
              "fixed": "96efee36453b697ccbaf75091b7a1807c11809dd"
            },
            {
              "fixed": "0ee0532f1d405d37f38c44cbba87342e63d3bbd4"
            },
            {
              "fixed": "05eaa887e7b4f40fba425f8a1d7a5a8a043092a6"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.10.0"
            },
            {
              "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-2026-74442.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/vmwgfx: avoid destroy_workqueue(NULL) on vkms init failure\n\nTwo paths through vmw_vkms_init() can leave vmw-\u003ecrc_workq NULL while\nstill leaving the rest of the driver in a state that calls\nvmw_vkms_cleanup() at module unload:\n\n  1. vmw_host_get_guestinfo(GUESTINFO_VBLANK, ...) failing or\n     returning an oversized buffer -- the common case on hosts\n     without a VBLANK guestinfo entry -- early-returned before the\n     workqueue allocation.\n  2. alloc_ordered_workqueue() returning NULL on memory pressure.\n\nvmw_vkms_cleanup() then calls destroy_workqueue(NULL), which\ndereferences wq-\u003ename and panics.\n\nFix the first case by removing the early return: vmw-\u003evkms_enabled\nis already false on the rpci-failure path so no work will ever be\nqueued, and allocating the workqueue unconditionally keeps the\ncontrol flow simple.  Fix the second case by guarding the cleanup\nwith a NULL check, since alloc_ordered_workqueue() can still fail\nunder low memory.",
  "id": "CVE-2026-74442",
  "modified": "2026-08-18T03:31:04.865880541Z",
  "published": "2026-08-15T12:26:50.102Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/05eaa887e7b4f40fba425f8a1d7a5a8a043092a6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0ee0532f1d405d37f38c44cbba87342e63d3bbd4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7c701778c6a369769992614dac8dc00c8ac72afc"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/96efee36453b697ccbaf75091b7a1807c11809dd"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74442.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-74442"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "drm/vmwgfx: avoid destroy_workqueue(NULL) on vkms init failure"
}