{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "c1bb0c13e430623c26543baae5bb9ae21139db87"
            },
            {
              "fixed": "c071df05bcda0e47aac581d4b564b2bebcb1ff60"
            },
            {
              "fixed": "27161c68d5e78807c9d897db222a775b298d05fd"
            },
            {
              "fixed": "147996e7e7c9e8339c0e04f6fa7ccb3e4d448ff7"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.18.0"
            },
            {
              "fixed": "6.18.39"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64491.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: usx2y: us144mkii: fix work UAF on disconnect\n\ntascam_disconnect() cancels capture_work and midi_in_work before\nusb_kill_anchored_urbs() kills the capture/MIDI-in URBs.  Those URBs\nself-resubmit, and their completion handlers reschedule the work.\n\nA URB that completes in the small window between cancel_work_sync() and\nusb_kill_anchored_urbs() therefore re-arms the work after its only\ncancel.  Nothing cancels it again before snd_card_free() frees the\ncard-private tascam structure, so the work handler then runs on freed\nmemory.\n\nKill the anchored URBs before cancelling the work; once the work is\ncancelled no remaining URB can complete to re-arm it.",
  "id": "CVE-2026-64491",
  "modified": "2026-07-27T03:56:11.724901648Z",
  "published": "2026-07-25T08:51:49.601Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/147996e7e7c9e8339c0e04f6fa7ccb3e4d448ff7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/27161c68d5e78807c9d897db222a775b298d05fd"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c071df05bcda0e47aac581d4b564b2bebcb1ff60"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64491.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-64491"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.8.0",
  "summary": "ALSA: usx2y: us144mkii: fix work UAF on disconnect"
}