CVE-2026-64117: wifi: mac80211: capture fast-RX rate before mesh reuses skb->cb

Affected versions

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

• linux linux kernel6.4 and later · before 7.0.11
• 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

  • 6.4affected
  • 3468e1e0c639032a603450f0830ccabfa76f5806 and later · before 5fe97797412aa8bc0184f78379fafb594bcb7f66affected · git
  • 3468e1e0c639032a603450f0830ccabfa76f5806 and later · before 0cd37e746e98ab0baa6d8b812955220775b080d6affected · git
  • 3468e1e0c639032a603450f0830ccabfa76f5806 and later · before a2650f8461cd8ba287fee2992b36abe733c2bd5eaffected · git
  • 3468e1e0c639032a603450f0830ccabfa76f5806 and later · before 2fb64f94f9afb774f2fa0c7835727d7a67f89f07affected · git
  • 3468e1e0c639032a603450f0830ccabfa76f5806 and later · before d71c841be5d9e586ee7f36c0dc8ed4db0d9a1349affected · git
  • before 6.4not affected · semver
  • 6.6.160 and later · up to and including 6.6.*not affected · semver
  • 6.12.114 and later · up to and including 6.12.*not affected · semver
  • 6.18.57 and later · up to and including 6.18.*not 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-2026-64114Jul 19, 2026 · ipv4: raw: reject IP_HDRINCL packets with ihl < 5
  31Monitor
• ← EarlierCVE-2026-64115Jul 19, 2026 · vsock/vmci: fix UAF when peer resets connection during handshake
  35Monitor
• Later →CVE-2026-64118Jul 19, 2026 · qed: fix double free in qed_cxt_tables_alloc()
  33Monitor

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.