{
  "affected": [
    {
      "ranges": [
        {
          "events": [
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              "introduced": "493b3a682ededc804555755f5d2193201339612d"
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          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
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            }
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          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
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              "introduced": "ac7345f68cda6989016d85d63f7b244c064aa8f6"
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          "type": "GIT"
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          "type": "GIT"
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          "type": "GIT"
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      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.6.136"
            },
            {
              "fixed": "6.6.140"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.12.84"
            },
            {
              "fixed": "6.12.86"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.18.25"
            },
            {
              "fixed": "6.18.27"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "7.0.2"
            },
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            }
          ],
          "type": "ECOSYSTEM"
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  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46048.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: caiaq: fix usb_dev refcount leak on probe failure\n\ncreate_card() takes a reference on the USB device with usb_get_dev()\nand stores the matching usb_put_dev() in card_free(), which is\ninstalled as the snd_card's -\u003eprivate_free destructor.\n\nHowever, -\u003eprivate_free is only assigned near the end of init_card(),\nafter several failure points (usb_set_interface(), EP type checks,\nusb_submit_urb(), the EP1_CMD_GET_DEVICE_INFO exchange, and its\ntimeout). When any of those fail, init_card() returns an error to\nsnd_probe(), which calls snd_card_free(card). Because -\u003eprivate_free\nis still NULL, card_free() never runs, the usb_get_dev() reference\nis not dropped, and the struct usb_device leaks along with its\ndescriptor allocations and device_private.\n\nsyzbot reproduces this with a malformed UAC3 device whose only valid\naltsetting is 0; init_card()'s usb_set_interface(usb_dev, 0, 1) call\nfails with -EIO and triggers the leak.\n\nMove the -\u003eprivate_free assignment into create_card(), immediately\nafter usb_get_dev(), so that every error path reaching snd_card_free()\nbalances the reference. card_free()'s callees (snd_usb_caiaq_input_free,\nfree_urbs, kfree) already tolerate the partially-initialized state\nbecause the chip private area is zero-initialized by snd_card_new().",
  "id": "CVE-2026-46048",
  "modified": "2026-07-15T01:49:02.064517133Z",
  "published": "2026-05-27T12:57:04.477Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/21ca595aafa40d3ac70eab1f4cb62cc00ca21657"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/50c6a1f05973f56d23280c9d7645a7a5734e0907"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6153878c5255bb69b7d0868105ca078ef13cbcf8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6fa8dff64fb6c401ced40a05797b327659317498"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7a5f1cd22d47f8ca4b760b6334378ae42c1bd24b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a8d907acc3e5a078c2e5637ff60c30c6d2ddc23a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c874db8a1d2f9f08161470d00cfe8db2f5cca2cc"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/da3b8fd6a202d94fef11a443abc9171c52426a1c"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46048.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-46048"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.8.0",
  "summary": "ALSA: caiaq: fix usb_dev refcount leak on probe failure"
}