CVE-2022-49934: wifi: mac80211: Fix UAF in ieee80211_scan_rx()

Affected versions

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

• linux linux kernel3.19 and later · before 4.9.330
• linux linux kernel4.10 and later · before 4.14.295
• linux linux kernel4.15 and later · before 4.19.260
• linux linux kernel4.20 and later · before 5.4.215
• linux linux kernel5.5 and later · before 5.10.142
• linux linux kernel5.11 and later · before 5.15.66
• linux linux kernel5.16 and later · before 5.19.8
• linux linux kernel6.0

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

  • 3.19affected
  • 6ea0a69ca21bbddab5b3979c2190013b0263e749 and later · before 6eb181a64fdabf10be9e54de728876667da20255affected · git
  • 6ea0a69ca21bbddab5b3979c2190013b0263e749 and later · before e0ff39448cea654843744c72c6780293c5082cb1affected · git
  • 6ea0a69ca21bbddab5b3979c2190013b0263e749 and later · before 78a07732fbb0934d14827d8f09b9aa6a49ee1aa9affected · git
  • 6ea0a69ca21bbddab5b3979c2190013b0263e749 and later · before 9ad48cbf8b07f10c1e4a7a262b32a9179ae9dd2daffected · git
  • 6ea0a69ca21bbddab5b3979c2190013b0263e749 and later · before 4abc8c07a065ecf771827bde3c63fbbe4aa0c08baffected · git
  • 6ea0a69ca21bbddab5b3979c2190013b0263e749 and later · before 5d20c6f932f2758078d0454729129c894fe353e7affected · git
  • 6ea0a69ca21bbddab5b3979c2190013b0263e749 and later · before c0445feb80a4d0854898118fa01073701f8d356baffected · git
  • 6ea0a69ca21bbddab5b3979c2190013b0263e749 and later · before 60deb9f10eec5c6a20252ed36238b55d8b614a2caffected · git
  • before 3.19not affected · semver

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-2025-38080Jun 18, 2025 · drm/amd/display: Increase block_sequence array size
  22Monitor
• ← EarlierCVE-2025-38082Jun 18, 2025 · gpio: virtuser: fix potential out-of-bound write
  31Monitor
• Later →CVE-2022-49935Jun 18, 2025 · dma-buf/dma-resv: check if the new fence is really later
  31Monitor

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.