FKIE_CVE-2026-53242

Vulnerability from fkie_nvd - Published: 2026-06-25 09:16 - Updated: 2026-06-30 14:44
Severity
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: ALSA: PCM: Fix wait queue list corruption in snd_pcm_drain() on linked streams snd_pcm_drain() uses init_waitqueue_entry which does not clear entry.prev/next, and add_wait_queue with a conditional remove_wait_queue that is skipped when to_check is no longer in the group after concurrent UNLINK. The orphaned wait entry remains on the unlinked substream sleep queue. On the next drain iteration, add_wait_queue adds the entry to a new queue while still linked on the old one, corrupting both lists. A subsequent wake_up dereferences NULL at the func pointer (mapped from the spinlock at offset 0 of the misinterpreted wait_queue_head_t), causing a kernel panic. Replace init_waitqueue_entry/add_wait_queue/conditional remove_wait_queue with init_wait_entry/prepare_to_wait/ finish_wait. init_wait_entry clears prev/next via INIT_LIST_HEAD on each iteration and sets autoremove_wake_function which auto-removes the entry on wake-up. finish_wait safely handles both the already-removed and still-queued cases.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7c71a9522555ff137a9ca36b15d759ca04d84788
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/88fe2e3658726cb21ff2dcf9770bf672f9b9d31b
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b053fcd8912f06c30f932f5b8ec41c72de474695
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/cac5bf3500ee6422cf64e0df0b5daeecfed42917
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/cd98837db15f323463b8df07282ac723bd5c3fed
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d68b621bb5a48051932f1017a6e1bc9b18f854d0
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d842f26a167e77a36f3ed333b9fa99d36ef99fe6
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "sound/core/pcm_native.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "cac5bf3500ee6422cf64e0df0b5daeecfed42917",
              "status": "affected",
              "version": "9baee36e8c5443411c4629afabafaff8a46a23fd",
              "versionType": "git"
            },
            {
              "lessThan": "d842f26a167e77a36f3ed333b9fa99d36ef99fe6",
              "status": "affected",
              "version": "fc71f888994569f87d5bee20b1ac6c9c1e3a7a79",
              "versionType": "git"
            },
            {
              "lessThan": "d68b621bb5a48051932f1017a6e1bc9b18f854d0",
              "status": "affected",
              "version": "629cf09464cf98670996ea5c191dc9743e6f3f00",
              "versionType": "git"
            },
            {
              "lessThan": "b053fcd8912f06c30f932f5b8ec41c72de474695",
              "status": "affected",
              "version": "ae8f8d30d334bad5b1b3cdb1eb8a0b771f55e432",
              "versionType": "git"
            },
            {
              "lessThan": "cd98837db15f323463b8df07282ac723bd5c3fed",
              "status": "affected",
              "version": "4a758e9a1f5ed722f83c4dd35f867fe811553bcb",
              "versionType": "git"
            },
            {
              "lessThan": "7c71a9522555ff137a9ca36b15d759ca04d84788",
              "status": "affected",
              "version": "9b1dbd69ba6f8f8c69bc7b77c2ce3b9c6ed05ba6",
              "versionType": "git"
            },
            {
              "lessThan": "88fe2e3658726cb21ff2dcf9770bf672f9b9d31b",
              "status": "affected",
              "version": "9b1dbd69ba6f8f8c69bc7b77c2ce3b9c6ed05ba6",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "c2f64e05a0587a83ec42dbd6b7a7ded79b2ff694",
              "versionType": "git"
            },
            {
              "lessThan": "5.10.259",
              "status": "affected",
              "version": "5.10.253",
              "versionType": "semver"
            },
            {
              "lessThan": "6.1.176",
              "status": "affected",
              "version": "6.1.167",
              "versionType": "semver"
            },
            {
              "lessThan": "6.6.143",
              "status": "affected",
              "version": "6.6.130",
              "versionType": "semver"
            },
            {
              "lessThan": "6.12.94",
              "status": "affected",
              "version": "6.12.78",
              "versionType": "semver"
            },
            {
              "lessThan": "6.18.36",
              "status": "affected",
              "version": "6.18.19",
              "versionType": "semver"
            },
            {
              "lessThan": "6.20",
              "status": "affected",
              "version": "6.19.9",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "sound/core/pcm_native.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "7.0"
            },
            {
              "lessThan": "7.0",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.259",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.176",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.143",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.94",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.36",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.13",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: PCM: Fix wait queue list corruption in snd_pcm_drain() on linked streams\n\nsnd_pcm_drain() uses init_waitqueue_entry which does not clear\nentry.prev/next, and add_wait_queue with a conditional\nremove_wait_queue that is skipped when to_check is no longer\nin the group after concurrent UNLINK.  The orphaned wait entry\nremains on the unlinked substream sleep queue.  On the next\ndrain iteration, add_wait_queue adds the entry to a new queue\nwhile still linked on the old one, corrupting both lists.  A\nsubsequent wake_up dereferences NULL at the func pointer\n(mapped from the spinlock at offset 0 of the misinterpreted\nwait_queue_head_t), causing a kernel panic.\n\nReplace init_waitqueue_entry/add_wait_queue/conditional\nremove_wait_queue with init_wait_entry/prepare_to_wait/\nfinish_wait.  init_wait_entry clears prev/next via\nINIT_LIST_HEAD on each iteration and sets\nautoremove_wake_function which auto-removes the entry on\nwake-up.  finish_wait safely handles both the already-removed\nand still-queued cases."
    }
  ],
  "id": "CVE-2026-53242",
  "lastModified": "2026-06-30T14:44:27.313",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-06-25T09:16:42.140",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/7c71a9522555ff137a9ca36b15d759ca04d84788"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/88fe2e3658726cb21ff2dcf9770bf672f9b9d31b"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/b053fcd8912f06c30f932f5b8ec41c72de474695"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/cac5bf3500ee6422cf64e0df0b5daeecfed42917"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/cd98837db15f323463b8df07282ac723bd5c3fed"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/d68b621bb5a48051932f1017a6e1bc9b18f854d0"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/d842f26a167e77a36f3ed333b9fa99d36ef99fe6"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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