{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-43482",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-05-01T14:12:56.012Z",
        "datePublished": "2026-05-13T15:08:29.739Z",
        "dateUpdated": "2026-05-13T15:08:29.739Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-13T15:08:29.739Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsched_ext: Disable preemption between scx_claim_exit() and kicking helper work\n\nscx_claim_exit() atomically sets exit_kind, which prevents scx_error() from\ntriggering further error handling. After claiming exit, the caller must kick\nthe helper kthread work which initiates bypass mode and teardown.\n\nIf the calling task gets preempted between claiming exit and kicking the\nhelper work, and the BPF scheduler fails to schedule it back (since error\nhandling is now disabled), the helper work is never queued, bypass mode\nnever activates, tasks stop being dispatched, and the system wedges.\n\nDisable preemption across scx_claim_exit() and the subsequent work kicking\nin all callers - scx_disable() and scx_vexit(). Add\nlockdep_assert_preemption_disabled() to scx_claim_exit() to enforce the\nrequirement."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "kernel/sched/ext.c"
                    ],
                    "versions": [
                        {
                            "version": "f0e1a0643a59bf1f922fa209cec86a170b784f3f",
                            "lessThan": "41423912f7ac7494ccd6eef411227b4efce740e0",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "f0e1a0643a59bf1f922fa209cec86a170b784f3f",
                            "lessThan": "522acaae34aa7e05859260056b39c7c030592a0c",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "f0e1a0643a59bf1f922fa209cec86a170b784f3f",
                            "lessThan": "5131dbec2c10961b34f844bc30b400c3fa0bcc72",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "f0e1a0643a59bf1f922fa209cec86a170b784f3f",
                            "lessThan": "83236b2e43dba00bee5b82eb5758816b1a674f6a",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "kernel/sched/ext.c"
                    ],
                    "versions": [
                        {
                            "version": "6.12",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.12",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.78",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.20",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.19.9",
                            "lessThanOrEqual": "6.19.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.0",
                            "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": "6.12",
                                    "versionEndExcluding": "6.12.78"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.12",
                                    "versionEndExcluding": "6.18.20"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.12",
                                    "versionEndExcluding": "6.19.9"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.12",
                                    "versionEndExcluding": "7.0"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/41423912f7ac7494ccd6eef411227b4efce740e0"
                },
                {
                    "url": "https://git.kernel.org/stable/c/522acaae34aa7e05859260056b39c7c030592a0c"
                },
                {
                    "url": "https://git.kernel.org/stable/c/5131dbec2c10961b34f844bc30b400c3fa0bcc72"
                },
                {
                    "url": "https://git.kernel.org/stable/c/83236b2e43dba00bee5b82eb5758816b1a674f6a"
                }
            ],
            "title": "sched_ext: Disable preemption between scx_claim_exit() and kicking helper work",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}