← Back to CVE Explorer

CVE-2026-46262

Full vulnerability record from the local CVENow database.

Description

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
MEDIUM
CVSS score
5.5 (v3.1)
Vulnerability status
Analyzed
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2026-06-03 18:16:27.513000
Last modified
2026-11-06 17:17:53.887000
View original CVE JSON 
{
  "id": "CVE-2026-46262",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2026-06-03T18:16:27.513",
  "lastModified": "2026-11-06T17:17:53.887",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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->controls_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."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nASoC: fsl_xcvr: Revertir corrección de bloqueo faltante en fsl_xcvr_mode_put()\n\nEsto revierte el commit f51424872760 ('ASoC: fsl_xcvr: corregir bloqueo faltante en fsl_xcvr_mode_put()').\n\nEl parche original intentó adquirir el bloqueo card->controls_rwsem en fsl_xcvr_mode_put(). Sin embargo, esta función es llamada desde la función central superior de ALSA snd_ctl_elem_write(), que ya mantiene el bloqueo de escritura en controls_rwsem para toda la operación 'put'. Así que no hay necesidad de simplemente mantener el bloqueo para fsl_xcvr_activate_ctl() de nuevo.\n\nAdquirir el bloqueo de lectura mientras se mantiene el bloqueo de escritura en el mismo hilo resulta en un interbloqueo y una tarea colgada, según lo informado por Alexander Stein."
    }
  ],
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "programFiles": [
            "sound/soc/fsl/fsl_xcvr.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "612ffe1f4f0499b3011f16d06e354a76dae2e2d1",
              "lessThan": "ae5a70e3e87c28edbaf9939cfef1bcbd9615420f",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "38354c82abe7bcbcd1182a06af89d3cc16d3e2c7",
              "lessThan": "30ffcad5edb56947dccc26f6816ab7a55b21a711",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "61e007657bf7740d54ca2aadce0fb5997839818e",
              "lessThan": "29b2fbe3498da3681a01b34e4a2259f8a1b89448",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "daaf4fe333e0d48b2037cd2270bf1ff8f70d5068",
              "lessThan": "b0f74f5d24fe3c73ef1369a811891198b54c1e8e",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "cab928242853a832ffa7efda270ecfb9efeebb6e",
              "lessThan": "9a2a5da002775376498e8814df4a87cd629a3a0c",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "f514248727606b9087bc38a284ff686e0093abf1",
              "lessThan": "0886dc6326c3cc596799c4340d342898301cf52a",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "f514248727606b9087bc38a284ff686e0093abf1",
              "lessThan": "9f16d96e1222391a6b996a1b676bec14fb91e3b2",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "5.15.201",
              "lessThan": "5.15.202",
              "versionType": "semver",
              "status": "affected"
            },
            {
              "version": "6.1.164",
              "lessThan": "6.1.165",
              "versionType": "semver",
              "status": "affected"
            },
            {
              "version": "6.6.127",
              "lessThan": "6.6.128",
              "versionType": "semver",
              "status": "affected"
            },
            {
              "version": "6.12.74",
              "lessThan": "6.12.75",
              "versionType": "semver",
              "status": "affected"
            },
            {
              "version": "6.18.13",
              "lessThan": "6.18.14",
              "versionType": "semver",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "programFiles": [
            "sound/soc/fsl/fsl_xcvr.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "6.19",
              "status": "affected"
            },
            {
              "version": "0",
              "lessThan": "6.19",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "5.15.202",
              "lessThanOrEqual": "5.15.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.1.165",
              "lessThanOrEqual": "6.1.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.6.128",
              "lessThanOrEqual": "6.6.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.12.75",
              "lessThanOrEqual": "6.12.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.18.14",
              "lessThanOrEqual": "6.18.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.19.4",
              "lessThanOrEqual": "6.19.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "7.0",
              "lessThanOrEqual": "*",
              "versionType": "original_commit_for_fix",
              "status": "unaffected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Primary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-11-06T16:13:08.973644Z",
          "id": "CVE-2026-46262",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-667"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "versionStartIncluding": "6.19.1",
              "versionEndExcluding": "6.19.4",
              "matchCriteriaId": "411B9362-5B74-4569-8450-50CAD50DE99C"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:linux:linux_kernel:5.15.201:*:*:*:*:*:*:*",
              "matchCriteriaId": "3873509D-CFDC-4039-9A16-64648274E54D"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.1.164:*:*:*:*:*:*:*",
              "matchCriteriaId": "8841C0DA-359F-4C10-8F51-9494CC682F61"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.6.127:*:*:*:*:*:*:*",
              "matchCriteriaId": "6F686B00-599C-4C3E-B874-A3725ADF8B50"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.12.74:*:*:*:*:*:*:*",
              "matchCriteriaId": "6E601D5F-7735-4B9F-B177-8317F642EC01"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.18.13:*:*:*:*:*:*:*",
              "matchCriteriaId": "7FBB74D9-EA97-4AD2-B9D8-DC505C2E45DE"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.19:-:*:*:*:*:*:*",
              "matchCriteriaId": "35C8A871-4971-433E-A046-FC9F7B7D190A"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/0886dc6326c3cc596799c4340d342898301cf52a",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ]
    },
    {
      "url": "https://git.kernel.org/stable/c/29b2fbe3498da3681a01b34e4a2259f8a1b89448",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ]
    },
    {
      "url": "https://git.kernel.org/stable/c/30ffcad5edb56947dccc26f6816ab7a55b21a711",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ]
    },
    {
      "url": "https://git.kernel.org/stable/c/9a2a5da002775376498e8814df4a87cd629a3a0c",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ]
    },
    {
      "url": "https://git.kernel.org/stable/c/9f16d96e1222391a6b996a1b676bec14fb91e3b2",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ]
    },
    {
      "url": "https://git.kernel.org/stable/c/ae5a70e3e87c28edbaf9939cfef1bcbd9615420f",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ]
    },
    {
      "url": "https://git.kernel.org/stable/c/b0f74f5d24fe3c73ef1369a811891198b54c1e8e",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ]
    }
  ]
}