CVE-2022-50386: Bluetooth: L2CAP: Fix user-after-free

Affected versions

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

• linux linux kernelbefore 4.9.331
• linux linux kernel4.10 and later · before 4.14.296
• linux linux kernel4.15 and later · before 4.19.262
• linux linux kernel4.20 and later · before 5.4.220
• linux linux kernel5.5 and later · before 5.10.150
• linux linux kernel5.11 and later · before 5.15.75
• linux linux kernel5.16 and later · before 5.19.17
• linux linux kernel6.0 and later · before 6.0.3

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

  • 3.4affected
  • 3df91ea20e744344100b10ae69a17211fcf5b207 and later · before 11e40d6c0823f699d8ad501e48d1c3ae4be386cdaffected · git
  • 3df91ea20e744344100b10ae69a17211fcf5b207 and later · before 843fc4e386dd84b806a7f07fb062d8c3a44e5364affected · git
  • 3df91ea20e744344100b10ae69a17211fcf5b207 and later · before d91fc2836562f299f34e361e089e9fe154da4f73affected · git
  • 3df91ea20e744344100b10ae69a17211fcf5b207 and later · before 7d6f9cb24d2b2f6b6370eac074e2e6b1bafdad45affected · git
  • 3df91ea20e744344100b10ae69a17211fcf5b207 and later · before 0c108cf3ad386e0084277093b55a351c49e0be27affected · git
  • 3df91ea20e744344100b10ae69a17211fcf5b207 and later · before d1e894f950ad48897d1a7cb05909ea29d8c3810eaffected · git
  • 3df91ea20e744344100b10ae69a17211fcf5b207 and later · before 6ffde6e03085874ae22263ff4cef4869f797e84faffected · git
  • 3df91ea20e744344100b10ae69a17211fcf5b207 and later · before 15fc21695eb606bdc5d483b92118ee42610a952daffected · git
  • 3df91ea20e744344100b10ae69a17211fcf5b207 and later · before 35fcbc4243aad7e7d020b7c1dfb14bb888b20a4faffected · 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-2022-50384Sep 18, 2025 · staging: vme_user: Fix possible UAF in tsi148_dma_list_add
  31Monitor
• ← EarlierCVE-2022-50385Sep 18, 2025 · NFS: Fix an Oops in nfs_d_automount()
  22Monitor
• Later →CVE-2022-50387Sep 18, 2025 · net: hinic: fix the issue of CMDQ memory leaks
  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.