221 lines
12 KiB
JSON
221 lines
12 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-2022-49535",
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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": "2025-02-26T02:08:31.589Z",
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"datePublished": "2025-02-26T02:13:53.482Z",
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"dateUpdated": "2026-08-05T08:55:30.049Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-08-05T08:55:30.049Z"
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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: 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."
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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 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."
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}
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]
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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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/lpfc/lpfc_els.c"
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],
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"versions": [
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{
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"version": "52edb2caf675684acf2140a125de4774c691fecd",
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"lessThan": "c7dc74ab7975c9b96284abfe4cca756d75fa4604",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "52edb2caf675684acf2140a125de4774c691fecd",
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"lessThan": "10663ebec0ad5c78493a0dd34c9ee4d73d7ca0df",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "52edb2caf675684acf2140a125de4774c691fecd",
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"lessThan": "577a942df3de2666f6947bdd3a5c9e8d30073424",
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"status": "affected",
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"versionType": "git"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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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/lpfc/lpfc_els.c"
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],
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"versions": [
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{
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"version": "5.11",
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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": "5.11",
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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": "5.15.181",
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"lessThanOrEqual": "5.15.*",
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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": "5.18.3",
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"lessThanOrEqual": "5.18.*",
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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": "5.19",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.11",
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"versionEndExcluding": "5.15.181"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.11",
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"versionEndExcluding": "5.18.3"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.11",
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"versionEndExcluding": "5.19"
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}
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]
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}
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]
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}
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/c7dc74ab7975c9b96284abfe4cca756d75fa4604"
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},
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{
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"url": "https://git.kernel.org/stable/c/10663ebec0ad5c78493a0dd34c9ee4d73d7ca0df"
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},
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{
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"url": "https://git.kernel.org/stable/c/577a942df3de2666f6947bdd3a5c9e8d30073424"
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}
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],
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"title": "scsi: lpfc: Fix null pointer dereference after failing to issue FLOGI and PLOGI",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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},
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"adp": [
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{
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"metrics": [
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{
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"cvssV3_1": {
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"scope": "UNCHANGED",
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"version": "3.1",
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"baseScore": 7.8,
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"attackVector": "LOCAL",
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"baseSeverity": "HIGH",
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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"integrityImpact": "HIGH",
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"userInteraction": "NONE",
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"attackComplexity": "LOW",
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"availabilityImpact": "HIGH",
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"privilegesRequired": "LOW",
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"confidentialityImpact": "HIGH"
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}
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},
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{
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"other": {
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"type": "ssvc",
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"content": {
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"id": "CVE-2022-49535",
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"role": "CISA Coordinator",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "no"
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},
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{
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"Technical Impact": "total"
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}
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],
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"version": "2.0.3",
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"timestamp": "2025-02-27T18:15:34.195435Z"
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}
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}
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}
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],
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"problemTypes": [
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{
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"descriptions": [
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{
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"lang": "en",
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"type": "CWE",
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"cweId": "CWE-416",
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"description": "CWE-416 Use After Free"
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}
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]
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2025-02-27T18:22:31.809Z"
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}
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}
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]
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}
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} |