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 ?
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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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().\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-416\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"3.16\",\"versionEndExcluding\":\"4.9.326\",\"matchCriteriaId\":\"43BDBFA3-27B7-414F-8CE2-54115E43072D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.10\",\"versionEndExcluding\":\"4.14.291\",\"matchCriteriaId\":\"3BBC7E43-6161-4F21-977C-5BB7792C6C94\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.15\",\"versionEndExcluding\":\"4.19.256\",\"matchCriteriaId\":\"6C47CDE3-B039-4AE5-B8E4-1DC820E473FF\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.20\",\"versionEndExcluding\":\"5.4.211\",\"matchCriteriaId\":\"B1C63D19-C08C-4308-A848-B2523C9275BD\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.5\",\"versionEndExcluding\":\"5.10.137\",\"matchCriteriaId\":\"C2BF720F-C5EE-4DE2-9BDF-CE4CFBC767F4\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.61\",\"matchCriteriaId\":\"51861563-7F40-460F-82CD-2D3FBDAD6618\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"5.18.18\",\"matchCriteriaId\":\"5B42E453-8837-49D0-A5EF-03F818A6DC11\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.19\",\"versionEndExcluding\":\"5.19.2\",\"matchCriteriaId\":\"A1A2A5A5-4598-4D7E-BA07-4660398D6C8F\"}]}]}],\"references\":[{\"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\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}"
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}


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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.