{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2022-49535", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-02-26T02:08:31.589Z", "datePublished": "2025-02-26T02:13:53.482Z", "dateUpdated": "2026-08-05T08:55:30.049Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T08:55:30.049Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: lpfc: Fix null pointer dereference after failing to issue FLOGI and PLOGI\n\nIf lpfc_issue_els_flogi() fails and returns non-zero status, the node\nreference count is decremented to trigger the release of the nodelist\nstructure. However, if there is a prior registration or dev-loss-evt work\npending, the node may be released prematurely. When dev-loss-evt\ncompletes, the released node is referenced causing a use-after-free null\npointer dereference.\n\nSimilarly, when processing non-zero ELS PLOGI completion status in\nlpfc_cmpl_els_plogi(), the ndlp flags are checked for a transport\nregistration before triggering node removal. If dev-loss-evt work is\npending, the node may be released prematurely and a subsequent call to\nlpfc_dev_loss_tmo_handler() results in a use after free ndlp dereference.\n\nAdd test for pending dev-loss before decrementing the node reference count\nfor FLOGI, PLOGI, PRLI, and ADISC handling." } ], "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 UAF is reached via Fibre Channel ELS FLOGI/PLOGI/PRLI/ADISC failure handling in the lpfc HBA driver; a peer on the same FC/FCoE SAN fabric can induce PLOGI/PRLI/ADISC rejects and rport loss, which is adjacent topology rather than a routable IP network.\nAC:L - An adjacent fabric attacker controls both sides of the race—causing rport loss to set NLP_IN_DEV_LOSS (default ~30s window) and rejecting rediscovery PLOGI/PRLI/ADISC—so premature ndlp release is reliably inducable without uncontrollable memory-layout conditions.\nPR:N - ELS completions and FC transport dev_loss callbacks run in HBA/worker context with no host authentication; a SAN fabric peer needs no credentials or capabilities on the victim system.\nUI:N - Discovery, ELS completion, and queued LPFC_EVT_DEV_LOSS handling run automatically during normal fabric operation; no local user action such as mounting or opening a device is required.\nS:U - The corruption is confined to the host kernel's lpfc ndlp mempool/heap within the same OS security authority; there is no VM escape, IOMMU/DMA bypass, or sandbox boundary crossing.\nC:H - This is a use-after-free of an ndlp returned to a kmalloc-backed mempool; reclaim of the freed object enables heap-spray-assisted arbitrary read, and UAF guidance scores confidentiality High.\nI:H - Post-free use in lpfc_dev_loss_tmo_handler on a reclaimed ndlp enables heap corruption and control-flow hijack primitives (write/UAF exploitation), so integrity impact is High per UAF guidance.\nA:H - Premature free followed by the pending DEV_LOSS handler yields a use-after-free null pointer dereference/oops (or worse under exploitation), which is a full kernel availability loss." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/scsi/lpfc/lpfc_els.c" ], "versions": [ { "version": "52edb2caf675684acf2140a125de4774c691fecd", "lessThan": "c7dc74ab7975c9b96284abfe4cca756d75fa4604", "status": "affected", "versionType": "git" }, { "version": "52edb2caf675684acf2140a125de4774c691fecd", "lessThan": "10663ebec0ad5c78493a0dd34c9ee4d73d7ca0df", "status": "affected", "versionType": "git" }, { "version": "52edb2caf675684acf2140a125de4774c691fecd", "lessThan": "577a942df3de2666f6947bdd3a5c9e8d30073424", "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/lpfc/lpfc_els.c" ], "versions": [ { "version": "5.11", "status": "affected" }, { "version": "0", "lessThan": "5.11", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.181", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.18.3", "lessThanOrEqual": "5.18.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.19", "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": "5.11", "versionEndExcluding": "5.15.181" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.11", "versionEndExcluding": "5.18.3" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.11", "versionEndExcluding": "5.19" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/c7dc74ab7975c9b96284abfe4cca756d75fa4604" }, { "url": "https://git.kernel.org/stable/c/10663ebec0ad5c78493a0dd34c9ee4d73d7ca0df" }, { "url": "https://git.kernel.org/stable/c/577a942df3de2666f6947bdd3a5c9e8d30073424" } ], "title": "scsi: lpfc: Fix null pointer dereference after failing to issue FLOGI and PLOGI", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "metrics": [ { "cvssV3_1": { "scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH" } }, { "other": { "type": "ssvc", "content": { "id": "CVE-2022-49535", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "total" } ], "version": "2.0.3", "timestamp": "2025-02-27T18:15:34.195435Z" } } } ], "problemTypes": [ { "descriptions": [ { "lang": "en", "type": "CWE", "cweId": "CWE-416", "description": "CWE-416 Use After Free" } ] } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-02-27T18:22:31.809Z" } } ] } }