CVE-2022-50229: ALSA: bcd2000: Fix a UAF bug on the error path of probing

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

• linux linux kernel3.16 and later · before 4.9.326
• linux linux kernel4.10 and later · before 4.14.291
• linux linux kernel4.15 and later · before 4.19.256
• linux linux kernel4.20 and later · before 5.4.211
• linux linux kernel5.5 and later · before 5.10.137
• linux linux kernel5.11 and later · before 5.15.61
• linux linux kernel5.16 and later · before 5.18.18
• linux linux kernel5.19 and later · before 5.19.2

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

• Linux Linux

  • 3.16affected
  • b47a22290d581277be70e8a597824a4985d39e83 and later · before a718eba7e458e2f40531be3c6b6a0028ca7fcaceaffected · git
  • b47a22290d581277be70e8a597824a4985d39e83 and later · before 4fc41f7ebb7efca282f1740ea934d16f33c1d109affected · git
  • b47a22290d581277be70e8a597824a4985d39e83 and later · before 5e7338f4dd92b2f8915a82abfa1dd3ad3464bea0affected · git
  • b47a22290d581277be70e8a597824a4985d39e83 and later · before 05e0bb8c3c4dde3e21b9c1cf9395afb04e8b24dbaffected · git
  • b47a22290d581277be70e8a597824a4985d39e83 and later · before 348620464a5c127399ac09b266f494f393661952affected · git
  • b47a22290d581277be70e8a597824a4985d39e83 and later · before 64ca7f50ad96c2c65ae390b954925a36eabe04aaaffected · git
  • b47a22290d581277be70e8a597824a4985d39e83 and later · before 1d6a246cf97c380f2da76591f03019dd9c9599c3affected · git
  • b47a22290d581277be70e8a597824a4985d39e83 and later · before b0d4af0a4763ddc02344789ef2a281c494bc330daffected · git
  • b47a22290d581277be70e8a597824a4985d39e83 and later · before ffb2759df7efbc00187bfd9d1072434a13a54139affected · git

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

Other highest-scoring records for the same primary product.

• CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
  90Now
• CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV
  89Now
• CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
  85Now

Published before and after this one in the same product

• ← EarlierCVE-2022-50227Jun 18, 2025 · KVM: x86/xen: Initialize Xen timer only once
  22Monitor
• ← EarlierCVE-2022-50228Jun 18, 2025 · KVM: SVM: Don't BUG if userspace injects an interrupt with GIF=0
  22Monitor
• Later →CVE-2022-50230Jun 18, 2025 · arm64: set UXN on swapper page tables
  22Monitor

Root cause

After a memory region is freed, another reference pointing to it is still used. By then, the same region may have been allocated for different data.

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

1free(dev->buf);2/* ... another thread is still running ... */3process(dev->buf);

1lock(&dev->lock);2free(dev->buf);3dev->buf = NULL;4unlock(&dev->lock);

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.