{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.1",
    "cveMetadata": {
        "cveId": "CVE-2021-47617",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2024-06-19T14:55:32.795Z",
        "datePublished": "2024-06-20T10:57:01.508Z",
        "dateUpdated": "2024-09-11T17:34:50.429Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2024-06-20T10:57:01.508Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nPCI: pciehp: Fix infinite loop in IRQ handler upon power fault\n\nThe Power Fault Detected bit in the Slot Status register differs from\nall other hotplug events in that it is sticky:  It can only be cleared\nafter turning off slot power.  Per PCIe r5.0, sec. 6.7.1.8:\n\n  If a power controller detects a main power fault on the hot-plug slot,\n  it must automatically set its internal main power fault latch [...].\n  The main power fault latch is cleared when software turns off power to\n  the hot-plug slot.\n\nThe stickiness used to cause interrupt storms and infinite loops which\nwere fixed in 2009 by commits 5651c48cfafe (\"PCI pciehp: fix power fault\ninterrupt storm problem\") and 99f0169c17f3 (\"PCI: pciehp: enable\nsoftware notification on empty slots\").\n\nUnfortunately in 2020 the infinite loop issue was inadvertently\nreintroduced by commit 8edf5332c393 (\"PCI: pciehp: Fix MSI interrupt\nrace\"):  The hardirq handler pciehp_isr() clears the PFD bit until\npciehp's power_fault_detected flag is set.  That happens in the IRQ\nthread pciehp_ist(), which never learns of the event because the hardirq\nhandler is stuck in an infinite loop.  Fix by setting the\npower_fault_detected flag already in the hardirq handler."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/pci/hotplug/pciehp_hpc.c"
                    ],
                    "versions": [
                        {
                            "version": "a8cc52270f3d",
                            "lessThan": "ff27f7d0333c",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "4667358dab9c",
                            "lessThan": "464da38ba827",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "8edf5332c393",
                            "lessThan": "3b4c966fb156",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "8edf5332c393",
                            "lessThan": "1db58c6584a7",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "8edf5332c393",
                            "lessThan": "6d6f1f0dac3e",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "8edf5332c393",
                            "lessThan": "23584c1ed3e1",
                            "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/pci/hotplug/pciehp_hpc.c"
                    ],
                    "versions": [
                        {
                            "version": "5.7",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.7",
                            "status": "unaffected",
                            "versionType": "custom"
                        },
                        {
                            "version": "4.19.233",
                            "lessThanOrEqual": "4.19.*",
                            "status": "unaffected",
                            "versionType": "custom"
                        },
                        {
                            "version": "5.4.177",
                            "lessThanOrEqual": "5.4.*",
                            "status": "unaffected",
                            "versionType": "custom"
                        },
                        {
                            "version": "5.10.97",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "custom"
                        },
                        {
                            "version": "5.15.20",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "custom"
                        },
                        {
                            "version": "5.16.6",
                            "lessThanOrEqual": "5.16.*",
                            "status": "unaffected",
                            "versionType": "custom"
                        },
                        {
                            "version": "5.17",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/ff27f7d0333cff89ec85c419f431aca1b38fb16a"
                },
                {
                    "url": "https://git.kernel.org/stable/c/464da38ba827f670deac6500a1de9a4f0f44c41d"
                },
                {
                    "url": "https://git.kernel.org/stable/c/3b4c966fb156ff3e70b2526d964952ff7c1574d9"
                },
                {
                    "url": "https://git.kernel.org/stable/c/1db58c6584a72102e98af2e600ea184ddaf2b8af"
                },
                {
                    "url": "https://git.kernel.org/stable/c/6d6f1f0dac3e3441ecdb1103d4efb11b9ed24dd5"
                },
                {
                    "url": "https://git.kernel.org/stable/c/23584c1ed3e15a6f4bfab8dc5a88d94ab929ee12"
                }
            ],
            "title": "PCI: pciehp: Fix infinite loop in IRQ handler upon power fault",
            "x_generator": {
                "engine": "bippy-7d53e8ef8be4"
            }
        },
        "adp": [
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                    "orgId": "af854a3a-2127-422b-91ae-364da2661108",
                    "shortName": "CVE",
                    "dateUpdated": "2024-08-04T05:47:40.879Z"
                },
                "title": "CVE Program Container",
                "references": [
                    {
                        "url": "https://git.kernel.org/stable/c/ff27f7d0333cff89ec85c419f431aca1b38fb16a",
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            },
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "id": "CVE-2021-47617",
                                "role": "CISA Coordinator",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "Technical Impact": "partial"
                                    }
                                ],
                                "version": "2.0.3",
                                "timestamp": "2024-09-10T17:11:38.706492Z"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2024-09-11T17:34:50.429Z"
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}