{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2021-47308", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-05-21T13:27:52.133Z", "datePublished": "2024-05-21T14:35:27.319Z", "dateUpdated": "2026-08-05T08:47:12.469Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T08:47:12.469Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: libfc: Fix array index out of bound exception\n\nFix array index out of bound exception in fc_rport_prli_resp()." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 8.8, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:A - The bug is reached when processing a Fibre Channel PRLI LS_ACC from a peer on the same FC SAN fabric or FCoE (ETH_P_FCOE) L2 segment; that is adjacent-network topology, not Internet-routable IP.\nAC:L - After the initiator automatically PLOGIs/PRLIs a discovered port, the peer fully controls the PRLI ACC and can set spp_type to any u8 >= FC_FC4_PROV_SIZE, reliably indexing past fc_passive_prov[] with no race or nondeterministic condition.\nPR:N - fc_exch_recv and the FCoE/HBA receive path accept fabric-peer frames with no OS credential or capability check; fabric zoning only constrains topology, not authenticated privileges on this code path.\nUI:N - Discovery-driven fc_rport_login automatically advances through PLOGI into PRLI against a presented target; no separate victim action such as mounting a volume or confirming a prompt is required.\nS:U - The out-of-bounds provider-table access and resulting indirect call corrupt host kernel control flow within the same OS security authority and do not cross a VM, IOMMU, or sandbox boundary.\nC:H - Attacker-chosen spp_type performs an unbounded (up to index 255) out-of-bounds read of adjacent kernel pointer/data (including into fc_active_prov and further module globals), which per guidance is High confidentiality impact and enables further disclosure primitives if the call is hijacked.\nI:H - The OOB-read value is used as a struct fc4_prov * and prov->prli() is invoked, yielding an attacker-influenced indirect call that enables control-flow hijacking and arbitrary code execution.\nA:H - Dereferencing or calling through a non-NULL OOB pointer that is not a valid fc4_prov causes a kernel oops/panic, which is High availability impact and can be retried on subsequent PRLI exchanges." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/scsi/libfc/fc_rport.c" ], "versions": [ { "version": "386b97b43c0c9e0d878eec7ea1db16af22b036ae", "lessThan": "44651522941c623e20882b3b443f23f77de1ea8b", "status": "affected", "versionType": "git" }, { "version": "386b97b43c0c9e0d878eec7ea1db16af22b036ae", "lessThan": "4921b1618045ffab71b1050bf0014df3313a2289", "status": "affected", "versionType": "git" }, { "version": "386b97b43c0c9e0d878eec7ea1db16af22b036ae", "lessThan": "0fe70c15f9435bb3c50954778245d62ee38b0e03", "status": "affected", "versionType": "git" }, { "version": "386b97b43c0c9e0d878eec7ea1db16af22b036ae", "lessThan": "a4a54c54af2516caa9c145015844543cfc84316a", "status": "affected", "versionType": "git" }, { "version": "386b97b43c0c9e0d878eec7ea1db16af22b036ae", "lessThan": "8511293e643a18b248510ae5734e4f360754348c", "status": "affected", "versionType": "git" }, { "version": "386b97b43c0c9e0d878eec7ea1db16af22b036ae", "lessThan": "b27c4577557045f1ab3cdfeabfc7f3cd24aca1fe", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/scsi/libfc/fc_rport.c" ], "versions": [ { "version": "4.10", "status": "affected" }, { "version": "0", "lessThan": "4.10", "status": "unaffected", "versionType": "semver" }, { "version": "4.14.241", "lessThanOrEqual": "4.14.*", "status": "unaffected", "versionType": "semver" }, { "version": "4.19.199", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.135", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.53", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.13.5", "lessThanOrEqual": "5.13.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.14", "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": "4.10", "versionEndExcluding": "4.14.241" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.10", "versionEndExcluding": "4.19.199" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.10", "versionEndExcluding": "5.4.135" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.10", "versionEndExcluding": "5.10.53" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.10", "versionEndExcluding": "5.13.5" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.10", "versionEndExcluding": "5.14" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/44651522941c623e20882b3b443f23f77de1ea8b" }, { "url": "https://git.kernel.org/stable/c/4921b1618045ffab71b1050bf0014df3313a2289" }, { "url": "https://git.kernel.org/stable/c/0fe70c15f9435bb3c50954778245d62ee38b0e03" }, { "url": "https://git.kernel.org/stable/c/a4a54c54af2516caa9c145015844543cfc84316a" }, { "url": "https://git.kernel.org/stable/c/8511293e643a18b248510ae5734e4f360754348c" }, { "url": "https://git.kernel.org/stable/c/b27c4577557045f1ab3cdfeabfc7f3cd24aca1fe" } ], "title": "scsi: libfc: Fix array index out of bound exception", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "problemTypes": [ { "descriptions": [ { "type": "CWE", "cweId": "CWE-125", "lang": "en", "description": "CWE-125 Out-of-bounds Read" } ] } ], "metrics": [ { "cvssV3_1": { "scope": "UNCHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "LOW", "privilegesRequired": "NONE", "confidentialityImpact": "LOW" } }, { "other": { "type": "ssvc", "content": { "timestamp": "2024-05-21T18:45:25.408358Z", "id": "CVE-2021-47308", "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": "2024-11-08T21:15:58.371Z" } }, { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T05:32:08.437Z" }, "title": "CVE Program Container", "references": [ { "url": "https://git.kernel.org/stable/c/44651522941c623e20882b3b443f23f77de1ea8b", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/4921b1618045ffab71b1050bf0014df3313a2289", "tags": 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