{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "5fb1c2361e5630491d2a2f9359654eb022601bc0"
            },
            {
              "fixed": "2209fdae5c2f615930c9af1379c1cfca199ec5d8"
            },
            {
              "fixed": "0498b27a1542021d90269d58347501d4c3ccd84e"
            },
            {
              "fixed": "26506a30e0e26d612f82a7bf0e395626968a44e6"
            },
            {
              "fixed": "e78c39f720679fcf3a2eacd82725ec3ea2648301"
            },
            {
              "fixed": "34c519feef3e4fcff1078dc8bdb25fbbbd10303f"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.140"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.86"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.27"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.0.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46011.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: mtk-jpeg: fix use-after-free in release path due to uncancelled work\n\nThe mtk_jpeg_release() function frees the context structure (ctx) without\nfirst cancelling any pending or running work in ctx-\u003ejpeg_work. This\ncreates a race window where the workqueue callback may still be accessing\nthe context memory after it has been freed.\n\nRace condition:\n\n    CPU 0 (release)                    CPU 1 (workqueue)\n    ----------------                   ------------------\n    close()\n      mtk_jpeg_release()\n                                       mtk_jpegenc_worker()\n                                         ctx = work-\u003edata\n                                         // accessing ctx\n\n        kfree(ctx)  // freed!\n                                         access ctx  // UAF!\n\nThe work is queued via queue_work() during JPEG encode/decode operations\n(via mtk_jpeg_device_run). If the device is closed while work is pending\nor running, the work handler will access freed memory.\n\nFix this by calling cancel_work_sync() BEFORE acquiring the mutex. This\nordering is critical: if cancel_work_sync() is called after mutex_lock(),\nand the work handler also tries to acquire the same mutex, it would cause\na deadlock.\n\nNote: The open error path does NOT need cancel_work_sync() because\nINIT_WORK() only initializes the work structure - it does not schedule\nit. Work is only scheduled later during ioctl operations.",
  "id": "CVE-2026-46011",
  "modified": "2026-07-15T01:48:52.062211164Z",
  "published": "2026-05-27T12:56:13.198Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0498b27a1542021d90269d58347501d4c3ccd84e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2209fdae5c2f615930c9af1379c1cfca199ec5d8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/26506a30e0e26d612f82a7bf0e395626968a44e6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/34c519feef3e4fcff1078dc8bdb25fbbbd10303f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e78c39f720679fcf3a2eacd82725ec3ea2648301"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46011.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-46011"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.8.0",
  "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": "media: mtk-jpeg: fix use-after-free in release path due to uncancelled work"
}