248 lines
12 KiB
JSON
248 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-2022-48792",
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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": "2024-07-16T11:38:08.893Z",
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"datePublished": "2024-07-16T11:43:48.026Z",
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"dateUpdated": "2026-08-05T08:52:22.849Z"
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},
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"cna": {
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"shortName": "Linux",
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"dateUpdated": "2026-08-05T08:52:22.849Z"
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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: pm8001: Fix use-after-free for aborted SSP/STP sas_task\n\nCurrently a use-after-free may occur if a sas_task is aborted by the upper\nlayer before we handle the I/O completion in mpi_ssp_completion() or\nmpi_sata_completion().\n\nIn this case, the following are the two steps in handling those I/O\ncompletions:\n\n - Call complete() to inform the upper layer handler of completion of\n the I/O.\n\n - Release driver resources associated with the sas_task in\n pm8001_ccb_task_free() call.\n\nWhen complete() is called, the upper layer may free the sas_task. As such,\nwe should not touch the associated sas_task afterwards, but we do so in the\npm8001_ccb_task_free() call.\n\nFix by swapping the complete() and pm8001_ccb_task_free() calls ordering."
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}
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],
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"metrics": [
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{
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"version": "3.1",
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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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"baseScore": 7.8,
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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:L - The vulnerability is in the PMC-Sierra pm8001 PCIe SAS/SATA HBA driver completion handlers (mpi_ssp_completion/mpi_sata_completion), reached via local SCSI I/O through libsas, not via network protocols or physical peripheral attachment.\nAC:L - This is a use-after-free on aborted SSP/STP sas_task completion; an attacker who can submit I/O can drive aborts and completions (including via short SG_IO timeouts or error recovery), and both sides of the free-vs-use race are attacker-influenceable on SMP.\nPR:L - Any unprivileged local user who can generate I/O to storage backed by this HBA (filesystem writes or SCSI generic access) can reach the queuecommand/abort/completion path; root or init-namespace CAP_SYS_ADMIN is not required.\nUI:N - Exploitation requires only attacker-initiated I/O and abort/completion activity; no separate victim user action is needed.\nS:U - The UAF corrupts kernel memory in the host kernel's SCSI/libsas authority and does not cross a VM, IOMMU, or other security boundary.\nC:H - Use-after-free of sas_task enables control of freed object contents (heap spray), which can be leveraged for arbitrary kernel memory disclosure.\nI:H - pm8001_ccb_task_free reads task fields and writes through the freed sas_task (including dma_unmap_sg based on attacker-influenced state), enabling arbitrary write/control-flow hijacking primitives.\nA:H - Use-after-free in IRQ/tasklet completion path can cause kernel oops/panic even when not fully exploited for code execution."
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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/pm8001/pm80xx_hwi.c"
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],
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"programFiles": [
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"drivers/scsi/pm8001/pm80xx_hwi.c"
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],
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"versions": [
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{
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"version": "4.15",
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"status": "affected"
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},
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{
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"version": "0",
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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": "5.10.102",
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"lessThanOrEqual": "5.10.*",
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"status": "unaffected",
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},
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{
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"version": "5.15.25",
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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": "5.16.11",
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"lessThanOrEqual": "5.16.*",
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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": "5.17",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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"title": "scsi: pm8001: Fix use-after-free for aborted SSP/STP sas_task",
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