330 lines
16 KiB
JSON
330 lines
16 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2021-47308",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2024-05-21T13:27:52.133Z",
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"datePublished": "2024-05-21T14:35:27.319Z",
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"dateUpdated": "2026-08-05T08:47:12.469Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"shortName": "Linux",
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"dateUpdated": "2026-08-05T08:47:12.469Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"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()."
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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
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"baseScore": 8.8,
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"baseSeverity": "HIGH"
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},
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"scenarios": [
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{
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"lang": "en",
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"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."
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}
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]
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}
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],
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/scsi/libfc/fc_rport.c"
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],
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"programFiles": [
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"drivers/scsi/libfc/fc_rport.c"
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],
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"versions": [
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{
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"version": "4.10",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "4.10",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "4.14.241",
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"lessThanOrEqual": "4.14.*",
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"status": "unaffected",
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},
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{
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"version": "4.19.199",
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"lessThanOrEqual": "4.19.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.4.135",
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"lessThanOrEqual": "5.4.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.10.53",
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"lessThanOrEqual": "5.10.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.13.5",
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"lessThanOrEqual": "5.13.*",
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"status": "unaffected",
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},
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{
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"version": "5.14",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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"timestamp": "2024-05-21T18:45:25.408358Z",
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"id": "CVE-2021-47308",
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