{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2022-48686", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-05-03T14:55:07.143Z", "datePublished": "2024-05-03T14:59:10.472Z", "dateUpdated": "2026-08-05T08:51:45.116Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T08:51:45.116Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvme-tcp: fix UAF when detecting digest errors\n\nWe should also bail from the io_work loop when we set rd_enabled to true,\nso we don't attempt to read data from the socket when the TCP stream is\nalready out-of-sync or corrupted." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 9.8, "baseSeverity": "CRITICAL" }, "scenarios": [ { "lang": "en", "value": "AV:N - The bug is in the NVMe/TCP host receive path (nvme_tcp_recv_skb → io_work), which processes PDU bytes from a remote TCP peer; a malicious or compromised NVMe-oF target (or MITM) triggers it over the network.\nAC:L - The attacker fully controls the peer TCP stream and can reliably send header-digest or other protocol errors, then more data so try_recv still returns pending work and io_work continues after rd_enabled is cleared.\nPR:N - The attacker is the remote NVMe/TCP peer and needs no privileges on the victim host; an already-configured fabrics connection is only a deployment precondition.\nUI:N - After an NVMe/TCP session exists, the peer can trigger the flaw during ordinary I/O with no further user action.\nS:U - Impact is use-after-free and memory corruption inside the host kernel’s own authority, not a cross-boundary escape.\nC:H - Continuing on a desynced stream and racing teardown yields a use-after-free (e.g. nvme_cid_to_rq on stale/freed requests), which can be leveraged for arbitrary kernel reads.\nI:H - The same UAF is exploitable for heap manipulation and arbitrary writes / control-flow hijacking in the kernel.\nA:H - The UAF causes kernel oops/panic and also forces controller error recovery that disrupts storage I/O." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/nvme/host/tcp.c" ], "versions": [ { "version": "3f2304f8c6d6ed97849057bd16fee99e434ca796", "lessThan": "19816a0214684f70b49b25075ff8c402fdd611d3", "status": "affected", "versionType": "git" }, { "version": "3f2304f8c6d6ed97849057bd16fee99e434ca796", "lessThan": "5914fa32ef1b7766fea933f9eed94ac5c00aa7ff", "status": "affected", "versionType": "git" }, { "version": "3f2304f8c6d6ed97849057bd16fee99e434ca796", "lessThan": "13c80a6c112467bab5e44d090767930555fc17a5", "status": 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"semver" }, { "version": "5.19.9", "lessThanOrEqual": "5.19.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.0", "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": "5.0", "versionEndExcluding": "5.4.213" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.0", "versionEndExcluding": "5.10.143" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.0", "versionEndExcluding": "5.15.68" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.0", "versionEndExcluding": "5.19.9" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.0", "versionEndExcluding": "6.0" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/19816a0214684f70b49b25075ff8c402fdd611d3" }, { "url": "https://git.kernel.org/stable/c/5914fa32ef1b7766fea933f9eed94ac5c00aa7ff" }, { "url": "https://git.kernel.org/stable/c/13c80a6c112467bab5e44d090767930555fc17a5" }, { "url": "https://git.kernel.org/stable/c/c3eb461aa56e6fa94fb80442ba2586bd223a8886" }, { "url": "https://git.kernel.org/stable/c/160f3549a907a50e51a8518678ba2dcf2541abea" } ], "title": "nvme-tcp: fix UAF when detecting digest errors", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "problemTypes": [ { "descriptions": [ { "type": "CWE", "cweId": "CWE-416", "lang": "en", "description": "CWE-416 Use After Free" } ] } ], "metrics": [ { "cvssV3_1": { "scope": "UNCHANGED", "version": "3.1", "baseScore": 6.2, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE" } }, { "other": { "type": "ssvc", "content": { "timestamp": "2024-06-17T17:39:58.605083Z", "id": "CVE-2022-48686", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-11-21T21:25:46.756Z" } }, { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T15:17:55.855Z" }, "title": "CVE Program Container", "references": [ { "url": "https://git.kernel.org/stable/c/19816a0214684f70b49b25075ff8c402fdd611d3", "tags": [ "x_transferred" ] }, { "url": 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