CVE-2026-64011: nfc: llcp: Fix use-after-free in llcp_sock_release()

Affected versions

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

• linux linux kernel3.10.10 and later · before 5.10.259
• linux linux kernel5.11 and later · before 5.15.210
• linux linux kernel5.16 and later · before 6.1.176
• linux linux kernel6.2 and later · before 6.6.143
• linux linux kernel6.7 and later · before 6.12.93
• linux linux kernel6.13 and later · before 6.18.35
• linux linux kernel6.19 and later · before 7.0.12
• linux linux kernel7.1

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

  • da989ee1c7702050741a551df6866cc1588f277b, 3.11affected
  • b4011239a08e7e6c2c6e970dfa9e8ecb73139261 and later · before 89ba026747019ee643d29407435ddc118e6ca908affected · git
  • b4011239a08e7e6c2c6e970dfa9e8ecb73139261 and later · before fb29f6bbe433f3decad227588809636c25f2a287affected · git
  • b4011239a08e7e6c2c6e970dfa9e8ecb73139261 and later · before 2dfdaaf7d933b676124aadec6698825e95f94fe9affected · git
  • b4011239a08e7e6c2c6e970dfa9e8ecb73139261 and later · before e00f50f8697724a6f1d2d35744c1332c9912dac5affected · git
  • b4011239a08e7e6c2c6e970dfa9e8ecb73139261 and later · before cdc17e09a636c7f936f771902535a7515a7608fcaffected · git
  • b4011239a08e7e6c2c6e970dfa9e8ecb73139261 and later · before 912ebc49d4406a17fe73e5671d674fbc2f6b2634affected · git
  • b4011239a08e7e6c2c6e970dfa9e8ecb73139261 and later · before bc421d0826dedbba37580a25405eafb599e76d42affected · git
  • b4011239a08e7e6c2c6e970dfa9e8ecb73139261 and later · before f4268b466190dae95a7585f69b4f1f8ad097632caffected · git
  • 3.10.10 and later · before 3.11affected · 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-2026-64009Jul 19, 2026 · xfrm: Check for underflow in xfrm_state_mtu
  31Monitor
• ← EarlierCVE-2026-64010Jul 19, 2026 · nfc: llcp: Fix use-after-free race in nfc_llcp_recv_cc()
  35Monitor
• Later →CVE-2026-64012Jul 19, 2026 · net/sched: sch_sfb: Replace direct dequeue call with peek and qdisc_dequeue_peeked
  22Monitor

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

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.