{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "8139a4d583abad45eb987b5a99b3281b6d435b7e"
            },
            {
              "fixed": "3c0283a59e36e3707c4a81f4952e362d31f876b8"
            },
            {
              "fixed": "2cbf81f76842e46bdf25823c70e1db4044a65678"
            },
            {
              "fixed": "38a327221f7f765e7d853b7bafe47e342441ec85"
            },
            {
              "fixed": "b5d141ea15f173f15b9f0a72965902f3428c0d92"
            },
            {
              "fixed": "5fb2940327722b4684d2f964b54c1c90aa277324"
            },
            {
              "fixed": "871b8ea8ef39a6c253594649f4339378fad3d0dd"
            },
            {
              "fixed": "6b9e66437cc6123ddedac141e1b8b6fcf57d2972"
            },
            {
              "fixed": "dd2b888e08d3b3d6aacd65d76cd44fac11da750f"
            },
            {
              "fixed": "a66485a934c7187ae8e36517d40615fa2e961cff"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.16.0"
            },
            {
              "fixed": "5.10.258"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.209"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.175"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.136"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.83"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.24"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "6.19.14"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.20.0"
            },
            {
              "fixed": "7.0.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31583.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: em28xx: fix use-after-free in em28xx_v4l2_open()\n\nem28xx_v4l2_open() reads dev-\u003ev4l2 without holding dev-\u003elock,\ncreating a race with em28xx_v4l2_init()'s error path and\nem28xx_v4l2_fini(), both of which free the em28xx_v4l2 struct\nand set dev-\u003ev4l2 to NULL under dev-\u003elock.\n\nThis race leads to two issues:\n - use-after-free in v4l2_fh_init() when accessing vdev-\u003ectrl_handler,\n   since the video_device is embedded in the freed em28xx_v4l2 struct.\n - NULL pointer dereference in em28xx_resolution_set() when accessing\n   v4l2-\u003enorm, since dev-\u003ev4l2 has been set to NULL.\n\nFix this by moving the mutex_lock() before the dev-\u003ev4l2 read and\nadding a NULL check for dev-\u003ev4l2 under the lock.",
  "id": "CVE-2026-31583",
  "modified": "2026-07-15T01:49:01.489865609Z",
  "published": "2026-04-24T14:42:12.923Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2cbf81f76842e46bdf25823c70e1db4044a65678"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/38a327221f7f765e7d853b7bafe47e342441ec85"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3c0283a59e36e3707c4a81f4952e362d31f876b8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5fb2940327722b4684d2f964b54c1c90aa277324"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6b9e66437cc6123ddedac141e1b8b6fcf57d2972"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/871b8ea8ef39a6c253594649f4339378fad3d0dd"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a66485a934c7187ae8e36517d40615fa2e961cff"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b5d141ea15f173f15b9f0a72965902f3428c0d92"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/dd2b888e08d3b3d6aacd65d76cd44fac11da750f"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31583.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-31583"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.8.0",
  "summary": "media: em28xx: fix use-after-free in em28xx_v4l2_open()"
}