{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2022-48911", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-08-21T06:06:23.294Z", "datePublished": "2024-08-22T01:31:07.463Z", "dateUpdated": "2026-08-05T08:52:51.573Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T08:52:51.573Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nf_queue: fix possible use-after-free\n\nEric Dumazet says:\n The sock_hold() side seems suspect, because there is no guarantee\n that sk_refcnt is not already 0.\n\nOn failure, we cannot queue the packet and need to indicate an\nerror. The packet will be dropped by the caller.\n\nv2: split skb prefetch hunk into separate change" } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:L - Exploitation requires configuring NFQUEUE (nftables/iptables + nfnetlink_queue) and driving local socket lifecycle so packets hit __nf_queue with a dying state->sk; this is a local netfilter/netlink path, not a remote packet-only attack.\nAC:L - 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 - The UAF reliably causes kernel oops/panic (refcount addition-on-0 and related free-path corruption), so availability impact is High." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "include/net/netfilter/nf_queue.h", "net/netfilter/nf_queue.c", "net/netfilter/nfnetlink_queue.c" ], "versions": [ { "version": "271b72c7fa82c2c7a795bc16896149933110672d", "lessThan": "21b27b2baa27423286e9b8d3f0b194d587083d95", "status": "affected", "versionType": "git" }, { "version": "271b72c7fa82c2c7a795bc16896149933110672d", "lessThan": "ef97921ccdc243170fcef857ba2a17cf697aece5", "status": "affected", "versionType": "git" }, { "version": "271b72c7fa82c2c7a795bc16896149933110672d", "lessThan": "34dc4a6a7f261736ef7183868a5bddad31c7f9e3", "status": "affected", "versionType": "git" }, { "version": "271b72c7fa82c2c7a795bc16896149933110672d", "lessThan": "43c25da41e3091b31a906651a43e80a2719aa1ff", "status": "affected", "versionType": "git" }, { "version": "271b72c7fa82c2c7a795bc16896149933110672d", "lessThan": "4d05239203fa38ea8a6f31e228460da4cb17a71a", "status": "affected", "versionType": "git" }, { "version": "271b72c7fa82c2c7a795bc16896149933110672d", "lessThan": "dd648bd1b33a828f62befa696b206c688da0ec43", "status": "affected", "versionType": "git" }, { "version": "271b72c7fa82c2c7a795bc16896149933110672d", "lessThan": "dcc3cb920bf7ba66ac5e9272293a9ba5f80917ee", "status": "affected", "versionType": "git" }, { "version": "271b72c7fa82c2c7a795bc16896149933110672d", "lessThan": "c3873070247d9e3c7a6b0cf9bf9b45e8018427b1", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "include/net/netfilter/nf_queue.h", "net/netfilter/nf_queue.c", "net/netfilter/nfnetlink_queue.c" ], "versions": [ { "version": "2.6.29", "status": "affected" }, { "version": "0", "lessThan": "2.6.29", "status": "unaffected", "versionType": "semver" }, { "version": "4.9.305", "lessThanOrEqual": "4.9.*", "status": "unaffected", "versionType": "semver" }, { "version": "4.14.270", "lessThanOrEqual": "4.14.*", "status": "unaffected", "versionType": "semver" }, { "version": "4.19.233", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.183", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.104", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.27", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.16.13", "lessThanOrEqual": "5.16.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.17", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.29", "versionEndExcluding": "4.9.305" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.29", "versionEndExcluding": "4.14.270" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.29", "versionEndExcluding": "4.19.233" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.29", "versionEndExcluding": "5.4.183" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.29", "versionEndExcluding": "5.10.104" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.29", "versionEndExcluding": "5.15.27" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.29", "versionEndExcluding": "5.16.13" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.29", "versionEndExcluding": "5.17" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/21b27b2baa27423286e9b8d3f0b194d587083d95" }, { "url": "https://git.kernel.org/stable/c/ef97921ccdc243170fcef857ba2a17cf697aece5" }, { "url": "https://git.kernel.org/stable/c/34dc4a6a7f261736ef7183868a5bddad31c7f9e3" }, { "url": "https://git.kernel.org/stable/c/43c25da41e3091b31a906651a43e80a2719aa1ff" }, { "url": "https://git.kernel.org/stable/c/4d05239203fa38ea8a6f31e228460da4cb17a71a" }, { "url": "https://git.kernel.org/stable/c/dd648bd1b33a828f62befa696b206c688da0ec43" }, { "url": "https://git.kernel.org/stable/c/dcc3cb920bf7ba66ac5e9272293a9ba5f80917ee" }, { "url": "https://git.kernel.org/stable/c/c3873070247d9e3c7a6b0cf9bf9b45e8018427b1" } ], "title": "netfilter: nf_queue: fix possible use-after-free", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "id": "CVE-2022-48911", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "version": "2.0.3", "timestamp": "2024-09-10T15:34:00.950489Z" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-09-12T17:33:02.033Z" } } ] } }