{
    "data_version": "4.0",
    "data_type": "CVE",
    "data_format": "MITRE",
    "CVE_data_meta": {
        "ID": "CVE-2024-26627",
        "ASSIGNER": "cve@kernel.org",
        "STATE": "PUBLIC"
    },
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: core: Move scsi_host_busy() out of host lock for waking up EH handler\n\nInside scsi_eh_wakeup(), scsi_host_busy() is called & checked with host\nlock every time for deciding if error handler kthread needs to be waken up.\n\nThis can be too heavy in case of recovery, such as:\n\n - N hardware queues\n\n - queue depth is M for each hardware queue\n\n - each scsi_host_busy() iterates over (N * M) tag/requests\n\nIf recovery is triggered in case that all requests are in-flight, each\nscsi_eh_wakeup() is strictly serialized, when scsi_eh_wakeup() is called\nfor the last in-flight request, scsi_host_busy() has been run for (N * M -\n1) times, and request has been iterated for (N*M - 1) * (N * M) times.\n\nIf both N and M are big enough, hard lockup can be triggered on acquiring\nhost lock, and it is observed on mpi3mr(128 hw queues, queue depth 8169).\n\nFix the issue by calling scsi_host_busy() outside the host lock. We don't\nneed the host lock for getting busy count because host the lock never\ncovers that.\n\n[mkp: Drop unnecessary 'busy' variables pointed out by Bart]"
            }
        ]
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "n/a"
                    }
                ]
            }
        ]
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "vendor_name": "Linux",
                    "product": {
                        "product_data": [
                            {
                                "product_name": "Linux",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_affected": "<",
                                            "version_name": "6eb045e092ef",
                                            "version_value": "f5944853f7a9"
                                        },
                                        {
                                            "version_value": "not down converted",
                                            "x_cve_json_5_version_data": {
                                                "versions": [
                                                    {
                                                        "version": "5.5",
                                                        "status": "affected"
                                                    },
                                                    {
                                                        "version": "0",
                                                        "lessThan": "5.5",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "5.10.210",
                                                        "lessThanOrEqual": "5.10.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "5.15.149",
                                                        "lessThanOrEqual": "5.15.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "6.1.77",
                                                        "lessThanOrEqual": "6.1.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "6.6.16",
                                                        "lessThanOrEqual": "6.6.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "6.7.4",
                                                        "lessThanOrEqual": "6.7.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "6.8",
                                                        "lessThanOrEqual": "*",
                                                        "status": "unaffected",
                                                        "versionType": "original_commit_for_fix"
                                                    }
                                                ],
                                                "defaultStatus": "affected"
                                            }
                                        }
                                    ]
                                }
                            }
                        ]
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            ]
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    "references": {
        "reference_data": [
            {
                "url": "https://git.kernel.org/stable/c/f5944853f7a961fedc1227dc8f60393f8936d37c",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/f5944853f7a961fedc1227dc8f60393f8936d37c"
            },
            {
                "url": "https://git.kernel.org/stable/c/d37c1c81419fdef66ebd0747cf76fb8b7d979059",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/d37c1c81419fdef66ebd0747cf76fb8b7d979059"
            },
            {
                "url": "https://git.kernel.org/stable/c/db6338f45971b4285ea368432a84033690eaf53c",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/db6338f45971b4285ea368432a84033690eaf53c"
            },
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                "url": "https://git.kernel.org/stable/c/65ead8468c21c2676d4d06f50b46beffdea69df1",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/65ead8468c21c2676d4d06f50b46beffdea69df1"
            },
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                "url": "https://git.kernel.org/stable/c/07e3ca0f17f579491b5f54e9ed05173d6c1d6fcb",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/07e3ca0f17f579491b5f54e9ed05173d6c1d6fcb"
            },
            {
                "url": "https://git.kernel.org/stable/c/4373534a9850627a2695317944898eb1283a2db0",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/4373534a9850627a2695317944898eb1283a2db0"
            }
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