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

Vulnerability from cvelistv5 – Published: 2025-06-18 11:04 – Updated: 2025-06-18 11:04
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 ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
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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      "descriptions": [
        {
          "lang": "en",
          "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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        "dateUpdated": "2025-06-18T11:04:06.069Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
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          "url": "https://git.kernel.org/stable/c/a718eba7e458e2f40531be3c6b6a0028ca7fcace"
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          "url": "https://git.kernel.org/stable/c/348620464a5c127399ac09b266f494f393661952"
        },
        {
          "url": "https://git.kernel.org/stable/c/64ca7f50ad96c2c65ae390b954925a36eabe04aa"
        },
        {
          "url": "https://git.kernel.org/stable/c/1d6a246cf97c380f2da76591f03019dd9c9599c3"
        },
        {
          "url": "https://git.kernel.org/stable/c/b0d4af0a4763ddc02344789ef2a281c494bc330d"
        },
        {
          "url": "https://git.kernel.org/stable/c/ffb2759df7efbc00187bfd9d1072434a13a54139"
        }
      ],
      "title": "ALSA: bcd2000: Fix a UAF bug on the error path of probing",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2022-50229",
    "datePublished": "2025-06-18T11:04:06.069Z",
    "dateReserved": "2025-06-18T10:57:27.432Z",
    "dateUpdated": "2025-06-18T11:04:06.069Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}


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  • 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.
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