{"id":"CVE-2026-90432","revision":"0f03088b1eff4add96fe108b16319f8a","records":[{"revision":"0f03088b1eff4add96fe108b16319f8a","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-90432","aliases":[],"title":"sched_ext: Abort directly from the hardlockup handler","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nsched_ext: Abort directly from the hardlockup handler\n\nscx_hardlockup() defers the abort to an irq_work because exit claiming used\nto take scx_sched_lock and couldn't run from NMI. The deferral is now\nunnecessary - claiming is NMI-safe and asserting ->aborting is exactly what\nbreaks the live-locks that hard-lock CPUs. Call handle_lockup() directly and\ndrop the irq_work. This also makes the self-detected case recoverable: the\nperf watchdog fires on the hard-locked CPU itself, where a queued irq_work\nnever runs with IRQs off.\n\nAlso fix the return value: %true used to be returned whenever sched_ext was\nloaded, suppressing the kernel's hardlockup report even when the abort was\nrefused. Return %true only when this call initiated the abort.","state":0,"publishedAt":"2026-09-17T16:09:52.429+00:00","modifiedAt":"2026-10-19T09:03:37.039+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"kernel/sched/ext/ext.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"bd2d76455b65aab77652823919db128a8e585825\",\n                            \"lessThan\": \"4d6270bbb4e083a4d2d39f3c36f30f5c939c06ed\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"bd2d76455b65aab77652823919db128a8e585825\",\n                            \"lessThan\": \"3c4b38064937a761ebbf85b1649e812db85eb59e\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"kernel/sched/ext/ext.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"7.1\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"7.1\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.6\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/4d6270bbb4e083a4d2d39f3c36f30f5c939c06ed","https://git.kernel.org/stable/c/3c4b38064937a761ebbf85b1649e812db85eb59e"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-90432","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-90432","identifiers":["CVE-2026-90432"]},"retained":false,"historicalAffected":[]}],"coverage":[]}