122 lines
5.5 KiB
JSON
122 lines
5.5 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-2026-90432",
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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": "2026-09-11T19:38:34.815Z",
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"datePublished": "2026-09-17T16:09:52.429Z",
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"dateUpdated": "2026-10-19T09:03:37.039Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-10-19T09:03:37.039Z"
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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\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."
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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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"kernel/sched/ext/ext.c"
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],
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"versions": [
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{
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"version": "bd2d76455b65aab77652823919db128a8e585825",
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"lessThan": "4d6270bbb4e083a4d2d39f3c36f30f5c939c06ed",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "bd2d76455b65aab77652823919db128a8e585825",
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"lessThan": "3c4b38064937a761ebbf85b1649e812db85eb59e",
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"status": "affected",
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"versionType": "git"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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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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"kernel/sched/ext/ext.c"
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],
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"versions": [
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{
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"version": "7.1",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "7.1",
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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": "7.2.6",
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"lessThanOrEqual": "7.2.*",
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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": "7.3",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "7.1",
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"versionEndExcluding": "7.2.6"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "7.1",
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"versionEndExcluding": "7.3"
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}
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]
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}
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]
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}
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/4d6270bbb4e083a4d2d39f3c36f30f5c939c06ed"
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},
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{
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"url": "https://git.kernel.org/stable/c/3c4b38064937a761ebbf85b1649e812db85eb59e"
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}
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],
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"title": "sched_ext: Abort directly from the hardlockup handler",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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}
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}
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} |