CVE-2022-48911: netfilter: nf_queue: fix possible use-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 kernel2.6.29 and later · before 4.9.305
• linux linux kernel4.10 and later · before 4.14.270
• linux linux kernel4.15 and later · before 4.19.233
• linux linux kernel4.20 and later · before 5.4.183
• linux linux kernel5.5 and later · before 5.10.104
• linux linux kernel5.11 and later · before 5.15.27
• linux linux kernel5.16 and later · before 5.16.13
• linux linux kernel5.17

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

  • 2.6.29affected
  • 271b72c7fa82c2c7a795bc16896149933110672d and later · before 21b27b2baa27423286e9b8d3f0b194d587083d95affected · git
  • 271b72c7fa82c2c7a795bc16896149933110672d and later · before ef97921ccdc243170fcef857ba2a17cf697aece5affected · git
  • 271b72c7fa82c2c7a795bc16896149933110672d and later · before 34dc4a6a7f261736ef7183868a5bddad31c7f9e3affected · git
  • 271b72c7fa82c2c7a795bc16896149933110672d and later · before 43c25da41e3091b31a906651a43e80a2719aa1ffaffected · git
  • 271b72c7fa82c2c7a795bc16896149933110672d and later · before 4d05239203fa38ea8a6f31e228460da4cb17a71aaffected · git
  • 271b72c7fa82c2c7a795bc16896149933110672d and later · before dd648bd1b33a828f62befa696b206c688da0ec43affected · git
  • 271b72c7fa82c2c7a795bc16896149933110672d and later · before dcc3cb920bf7ba66ac5e9272293a9ba5f80917eeaffected · git
  • 271b72c7fa82c2c7a795bc16896149933110672d and later · before c3873070247d9e3c7a6b0cf9bf9b45e8018427b1affected · git
  • before 2.6.29not 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-2022-48909Aug 21, 2024 · net/smc: fix connection leak
  22Monitor
• ← EarlierCVE-2022-48910Aug 21, 2024 · net: ipv6: ensure we call ipv6_mc_down() at most once
  22Monitor
• Later →CVE-2022-48912Aug 21, 2024 · netfilter: fix use-after-free in __nf_register_net_hook()
  31Monitor

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.