CVE-2022-48911 (GCVE-0-2022-48911)
Vulnerability from cvelistv5 – Published: 2024-08-22 01:31 – Updated: 2026-08-05 08:52
VLAI
EPSS
VEX
Title
netfilter: nf_queue: fix possible use-after-free
Summary
In the Linux kernel, the following vulnerability has been resolved:
netfilter: nf_queue: fix possible use-after-free
Eric Dumazet says:
The sock_hold() side seems suspect, because there is no guarantee
that sk_refcnt is not already 0.
On failure, we cannot queue the packet and need to indicate an
error. The packet will be dropped by the caller.
v2: split skb prefetch hunk into separate change
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-09-10 15:34 UTC
Assigner
References
8 references
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
271b72c7fa82c2c7a795bc16896149933110672d , < 21b27b2baa27423286e9b8d3f0b194d587083d95
(git)
Affected: 271b72c7fa82c2c7a795bc16896149933110672d , < ef97921ccdc243170fcef857ba2a17cf697aece5 (git) Affected: 271b72c7fa82c2c7a795bc16896149933110672d , < 34dc4a6a7f261736ef7183868a5bddad31c7f9e3 (git) Affected: 271b72c7fa82c2c7a795bc16896149933110672d , < 43c25da41e3091b31a906651a43e80a2719aa1ff (git) Affected: 271b72c7fa82c2c7a795bc16896149933110672d , < 4d05239203fa38ea8a6f31e228460da4cb17a71a (git) Affected: 271b72c7fa82c2c7a795bc16896149933110672d , < dd648bd1b33a828f62befa696b206c688da0ec43 (git) Affected: 271b72c7fa82c2c7a795bc16896149933110672d , < dcc3cb920bf7ba66ac5e9272293a9ba5f80917ee (git) Affected: 271b72c7fa82c2c7a795bc16896149933110672d , < c3873070247d9e3c7a6b0cf9bf9b45e8018427b1 (git) |
guessed | |
| Linux | Linux |
Affected:
2.6.29
Unaffected: 0 , < 2.6.29 (semver) Unaffected: 4.9.305 , ≤ 4.9.* (semver) Unaffected: 4.14.270 , ≤ 4.14.* (semver) Unaffected: 4.19.233 , ≤ 4.19.* (semver) Unaffected: 5.4.183 , ≤ 5.4.* (semver) Unaffected: 5.10.104 , ≤ 5.10.* (semver) Unaffected: 5.15.27 , ≤ 5.15.* (semver) Unaffected: 5.16.13 , ≤ 5.16.* (semver) Unaffected: 5.17 , ≤ * (original_commit_for_fix) |
guessed |
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En caso de falla, No podemos poner en cola el paquete y necesitamos indicar un error. La persona que llama descartar\u00e1 el paquete. v2: dividir el fragmento de captaci\u00f3n previa de skb en un cambio 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"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2026-08-04T19:47:17+00:00",
"cve": "CVE-2022-48911",
"id": "CVE-2022-48911",
"initial_release_date": "2022-01-01T00:00:00+00:00",
"product_status:known_affected": "16",
"product_status:known_not_affected": "182",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: netfilter: netfilter: nf_queue: fix possible use-after-free",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-48911.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "important",
"current_release_date": "2026-09-11T02:32:42Z",
"cve": "CVE-2022-48911",
"id": "CVE-2022-48911",
"initial_release_date": "2024-08-23T02:53:50Z",
"product_status:known_affected": "403",
"product_status:known_not_affected": "113",
"product_status:recommended": "701",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2022-48911",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2022-48911.json",
"version": "58"
},
"vulnrichment": {
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The attacker controls both sides of the race by installing NFQUEUE rules, running a queue listener, and racing connect/close (as in the TCP_NEW_SYN_RECV selftest), so success does not depend on external conditions.\\nPR:L - Setting up nfnetlink/nftables NFQUEUE needs CAP_NET_ADMIN, but that capability is obtainable inside an unprivileged user+network namespace via netlink_net_capable against the netns user_ns.\\nUI:N - No victim interaction is required; the attacker configures the queue, generates traffic, and closes sockets independently.\\nS:U - Impact is kernel memory corruption / privilege escalation within the same host security authority, not a VM escape or cross-boundary breakout.\\nC:H - Unsafe sock_hold() on a socket with sk_refcnt already 0 is a use-after-free of struct sock, which can be leveraged for arbitrary kernel memory disclosure.\\nI:H - The same sock UAF enables heap reclaim/spray and corrupted socket lifetime handling (illegitimate refs and later sock_gen_put/sk_free paths), supporting arbitrary write / control-flow hijacking.\\nA:H - 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The packet will be dropped by the caller.\\n\\nv2: split skb prefetch hunk into separate change\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.9.305\", \"versionStartIncluding\": \"2.6.29\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.14.270\", \"versionStartIncluding\": \"2.6.29\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.19.233\", \"versionStartIncluding\": \"2.6.29\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.183\", \"versionStartIncluding\": \"2.6.29\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.104\", \"versionStartIncluding\": \"2.6.29\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.27\", \"versionStartIncluding\": \"2.6.29\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.16.13\", \"versionStartIncluding\": \"2.6.29\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.17\", \"versionStartIncluding\": \"2.6.29\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-08-05T08:52:51.573Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2022-48911\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-08-05T08:52:51.573Z\", \"dateReserved\": \"2024-08-21T06:06:23.294Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-08-22T01:31:07.463Z\", \"assignerShortName\": \"Linux\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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