GHSA-WH6R-J4W9-V9JG

Vulnerability from github – Published: 2026-06-03 18:33 – Updated: 2026-06-09 21:32
VLAI
Details

In the Linux kernel, the following vulnerability has been resolved:

ASoC: fsl_xcvr: Revert fix missing lock in fsl_xcvr_mode_put()

This reverts commit f51424872760 ("ASoC: fsl_xcvr: fix missing lock in fsl_xcvr_mode_put()").

The original patch attempted to acquire the card->controls_rwsem lock in fsl_xcvr_mode_put(). However, this function is called from the upper ALSA core function snd_ctl_elem_write(), which already holds the write lock on controls_rwsem for the whole put operation. So there is no need to simply hold the lock for fsl_xcvr_activate_ctl() again.

Acquiring the read lock while holding the write lock in the same thread results in a deadlock and a hung task, as reported by Alexander Stein.

Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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{
  "affected": [],
  "aliases": [
    "CVE-2026-46262"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-667"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-03T18:16:27Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nASoC: fsl_xcvr: Revert fix missing lock in fsl_xcvr_mode_put()\n\nThis reverts commit f51424872760 (\"ASoC: fsl_xcvr: fix missing lock in fsl_xcvr_mode_put()\").\n\nThe original patch attempted to acquire the card-\u003econtrols_rwsem lock in\nfsl_xcvr_mode_put(). However, this function is called from the upper ALSA\ncore function snd_ctl_elem_write(), which already holds the write lock on\ncontrols_rwsem for the whole put operation. So there is no need to simply\nhold the lock for fsl_xcvr_activate_ctl() again.\n\nAcquiring the read lock while holding the write lock in the same thread\nresults in a deadlock and a hung task, as reported by Alexander Stein.",
  "id": "GHSA-wh6r-j4w9-v9jg",
  "modified": "2026-06-09T21:32:21Z",
  "published": "2026-06-03T18:33:12Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-46262"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0886dc6326c3cc596799c4340d342898301cf52a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/29b2fbe3498da3681a01b34e4a2259f8a1b89448"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/30ffcad5edb56947dccc26f6816ab7a55b21a711"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9a2a5da002775376498e8814df4a87cd629a3a0c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9f16d96e1222391a6b996a1b676bec14fb91e3b2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ae5a70e3e87c28edbaf9939cfef1bcbd9615420f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b0f74f5d24fe3c73ef1369a811891198b54c1e8e"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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