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CVE-2022-50229 (GCVE-0-2022-50229)

Vulnerability from cvelistv5 – Published: 2025-06-18 11:04 – Updated: 2026-05-11 19:15
VLAI
Title
ALSA: bcd2000: Fix a UAF bug on the error path of probing
Summary
In the Linux kernel, the following vulnerability has been resolved: ALSA: bcd2000: Fix a UAF bug on the error path of probing When the driver fails in snd_card_register() at probe time, it will free the 'bcd2k->midi_out_urb' before killing it, which may cause a UAF bug. The following log can reveal it: [ 50.727020] BUG: KASAN: use-after-free in bcd2000_input_complete+0x1f1/0x2e0 [snd_bcd2000] [ 50.727623] Read of size 8 at addr ffff88810fab0e88 by task swapper/4/0 [ 50.729530] Call Trace: [ 50.732899] bcd2000_input_complete+0x1f1/0x2e0 [snd_bcd2000] Fix this by adding usb_kill_urb() before usb_free_urb().
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: b47a22290d581277be70e8a597824a4985d39e83 , < a718eba7e458e2f40531be3c6b6a0028ca7fcace (git)
Affected: b47a22290d581277be70e8a597824a4985d39e83 , < 4fc41f7ebb7efca282f1740ea934d16f33c1d109 (git)
Affected: b47a22290d581277be70e8a597824a4985d39e83 , < 5e7338f4dd92b2f8915a82abfa1dd3ad3464bea0 (git)
Affected: b47a22290d581277be70e8a597824a4985d39e83 , < 05e0bb8c3c4dde3e21b9c1cf9395afb04e8b24db (git)
Affected: b47a22290d581277be70e8a597824a4985d39e83 , < 348620464a5c127399ac09b266f494f393661952 (git)
Affected: b47a22290d581277be70e8a597824a4985d39e83 , < 64ca7f50ad96c2c65ae390b954925a36eabe04aa (git)
Affected: b47a22290d581277be70e8a597824a4985d39e83 , < 1d6a246cf97c380f2da76591f03019dd9c9599c3 (git)
Affected: b47a22290d581277be70e8a597824a4985d39e83 , < b0d4af0a4763ddc02344789ef2a281c494bc330d (git)
Affected: b47a22290d581277be70e8a597824a4985d39e83 , < ffb2759df7efbc00187bfd9d1072434a13a54139 (git)
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Linux Linux Affected: 3.16
Unaffected: 0 , < 3.16 (semver)
Unaffected: 4.9.326 , ≤ 4.9.* (semver)
Unaffected: 4.14.291 , ≤ 4.14.* (semver)
Unaffected: 4.19.256 , ≤ 4.19.* (semver)
Unaffected: 5.4.211 , ≤ 5.4.* (semver)
Unaffected: 5.10.137 , ≤ 5.10.* (semver)
Unaffected: 5.15.61 , ≤ 5.15.* (semver)
Unaffected: 5.18.18 , ≤ 5.18.* (semver)
Unaffected: 5.19.2 , ≤ 5.19.* (semver)
Unaffected: 6.0 , ≤ * (original_commit_for_fix)
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            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: bcd2000: Fix a UAF bug on the error path of probing\n\nWhen the driver fails in snd_card_register() at probe time, it will free\nthe \u0027bcd2k-\u003emidi_out_urb\u0027 before killing it, which may cause a UAF bug.\n\nThe following log can reveal it:\n\n[   50.727020] BUG: KASAN: use-after-free in bcd2000_input_complete+0x1f1/0x2e0 [snd_bcd2000]\n[   50.727623] Read of size 8 at addr ffff88810fab0e88 by task swapper/4/0\n[   50.729530] Call Trace:\n[   50.732899]  bcd2000_input_complete+0x1f1/0x2e0 [snd_bcd2000]\n\nFix this by adding usb_kill_urb() before usb_free_urb()."
          },
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            "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ALSA: bcd2000: corrige un error de UAF en la ruta de error del sondeo Cuando el controlador falla en snd_card_register() en el momento del sondeo, liberar\u00e1 \u0027bcd2k-\u0026gt;midi_out_urb\u0027 antes de matarlo, lo que puede causar un error de UAF. El siguiente registro puede revelarlo: [ 50.727020] ERROR: KASAN: uso despu\u00e9s de la liberaci\u00f3n en bcd2000_input_complete+0x1f1/0x2e0 [snd_bcd2000] [ 50.727623] Lectura de tama\u00f1o 8 en la direcci\u00f3n ffff88810fab0e88 por el intercambiador de tareas/4/0 [ 50.729530] Seguimiento de llamadas: [ 50.732899] bcd2000_input_complete+0x1f1/0x2e0 [snd_bcd2000] Solucione esto agregando usb_kill_urb() antes de usb_free_urb()."
          }
        ],
        "id": "CVE-2022-50229",
        "lastModified": "2026-06-17T05:23:01.610",
        "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": "nvd@nist.gov",
              "type": "Primary"
            }
          ]
        },
        "published": "2025-06-18T11:15:53.967",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/05e0bb8c3c4dde3e21b9c1cf9395afb04e8b24db"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/1d6a246cf97c380f2da76591f03019dd9c9599c3"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/348620464a5c127399ac09b266f494f393661952"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/4fc41f7ebb7efca282f1740ea934d16f33c1d109"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/5e7338f4dd92b2f8915a82abfa1dd3ad3464bea0"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/64ca7f50ad96c2c65ae390b954925a36eabe04aa"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/a718eba7e458e2f40531be3c6b6a0028ca7fcace"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/b0d4af0a4763ddc02344789ef2a281c494bc330d"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/ffb2759df7efbc00187bfd9d1072434a13a54139"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Analyzed",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-416"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-29T21:43:54+00:00",
      "cve": "CVE-2022-50229",
      "id": "CVE-2022-50229",
      "initial_release_date": "2022-01-01T00:00:00+00:00",
      "product_status:fixed": "647",
      "product_status:known_affected": "52",
      "product_status:known_not_affected": "76",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: ALSA: bcd2000: Fix a UAF bug on the error path of probing",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-50229.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-01T01:25:06Z",
      "cve": "CVE-2022-50229",
      "id": "CVE-2022-50229",
      "initial_release_date": "2025-06-19T03:38:34Z",
      "product_status:known_affected": "495",
      "product_status:known_not_affected": "192",
      "product_status:recommended": "370",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2022-50229",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2022-50229.json",
      "version": "54"
    }
  }
}



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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.