CVE-2026-90389

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-90389", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-11T19:38:34.810Z", "datePublished": "2026-09-17T16:09:23.767Z", "dateUpdated": "2026-10-19T09:02:53.050Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T09:02:53.050Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmd: scope memalloc_noio to allocation critical sections\n\nStoring a memalloc_noio_save() token in mddev->noio_flags lets one task\nsave the token and another task restore it. With concurrent suspend sysfs\nwrites, task A can enter PF_MEMALLOC_NOIO, return to userspace still in\nthat scope, and later task B can restore A's saved token.\n\nAvoid tying the token lifetime to mddev. Keep mddev_suspend() and\nmddev_resume() only responsible for array suspension, and enter\nPF_MEMALLOC_NOIO only in the MD paths that allocate memory after the array\nhas been suspended. Restore the token before resuming the array.\n\nA reproducer repeatedly writes suspend_lo and suspend_hi from concurrent\nworkers and checks each worker's /proc/self/stat flags before and after the\nsysfs write."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/md/md-bitmap.c", "drivers/md/md.c", "drivers/md/md.h", "drivers/md/raid5.c"], "versions": [{"version": "78f57ef9d50a75326da73d352d7c27828495229a", "lessThan": "72ebfdf507ede7d7f2b7ca0a5634811a0e4bf045", "status": "affected", "versionType": "git"}, {"version": "78f57ef9d50a75326da73d352d7c27828495229a", "lessThan": "28fdea874f68cac6c36651b1fc7272fd2199c48d", "status": "affected", "versionType": "git"}, {"version": "78f57ef9d50a75326da73d352d7c27828495229a", "lessThan": "a58923756b0f8e71032070c23ae0b167e46731da", "status": "affected", "versionType": "git"}, {"version": "78f57ef9d50a75326da73d352d7c27828495229a", "lessThan": "bace2010dd7ac07bc980575afb135c406730a7fe", "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/md/md-bitmap.c", "drivers/md/md.c", "drivers/md/md.h", "drivers/md/raid5.c"], "versions": [{"version": "5.8", "status": "affected"}, {"version": "0", "lessThan": "5.8", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.110", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.52", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.6", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.3", "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": "5.8", "versionEndExcluding": "6.12.110"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.8", "versionEndExcluding": "6.18.52"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.8", "versionEndExcluding": "7.2.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.8", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/72ebfdf507ede7d7f2b7ca0a5634811a0e4bf045"}, {"url": "https://git.kernel.org/stable/c/28fdea874f68cac6c36651b1fc7272fd2199c48d"}, {"url": "https://git.kernel.org/stable/c/a58923756b0f8e71032070c23ae0b167e46731da"}, {"url": "https://git.kernel.org/stable/c/bace2010dd7ac07bc980575afb135c406730a7fe"}], "title": "md: scope memalloc_noio to allocation critical sections", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/md/md-bitmap.c", "drivers/md/md.c", "drivers/md/md.h", "drivers/md/raid5.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "72ebfdf507ede7d7f2b7ca0a5634811a0e4bf045", "status": "affected", "version": "78f57ef9d50a75326da73d352d7c27828495229a", "versionType": "git"}, {"lessThan": "28fdea874f68cac6c36651b1fc7272fd2199c48d", "status": "affected", "version": "78f57ef9d50a75326da73d352d7c27828495229a", "versionType": "git"}, {"lessThan": "a58923756b0f8e71032070c23ae0b167e46731da", "status": "affected", "version": "78f57ef9d50a75326da73d352d7c27828495229a", "versionType": "git"}, {"lessThan": "bace2010dd7ac07bc980575afb135c406730a7fe", "status": "affected", "version": "78f57ef9d50a75326da73d352d7c27828495229a", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/md/md-bitmap.c", "drivers/md/md.c", "drivers/md/md.h", "drivers/md/raid5.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.8"}, {"lessThan": "5.8", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.110", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.52", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.6", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.3", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmd: scope memalloc_noio to allocation critical sections\n\nStoring a memalloc_noio_save() token in mddev->noio_flags lets one task\nsave the token and another task restore it. With concurrent suspend sysfs\nwrites, task A can enter PF_MEMALLOC_NOIO, return to userspace still in\nthat scope, and later task B can restore A's saved token.\n\nAvoid tying the token lifetime to mddev. Keep mddev_suspend() and\nmddev_resume() only responsible for array suspension, and enter\nPF_MEMALLOC_NOIO only in the MD paths that allocate memory after the array\nhas been suspended. Restore the token before resuming the array.\n\nA reproducer repeatedly writes suspend_lo and suspend_hi from concurrent\nworkers and checks each worker's /proc/self/stat flags before and after the\nsysfs write."}], "id": "CVE-2026-90389", "lastModified": "2026-10-19T09:19:32.977", "metrics": {}, "published": "2026-09-17T17:17:38.427", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/28fdea874f68cac6c36651b1fc7272fd2199c48d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/72ebfdf507ede7d7f2b7ca0a5634811a0e4bf045"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a58923756b0f8e71032070c23ae0b167e46731da"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/bace2010dd7ac07bc980575afb135c406730a7fe"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[78f57ef9d50a75326da73d352d7c27828495229a,72ebfdf507ede7d7f2b7ca0a5634811a0e4bf045)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[78f57ef9d50a75326da73d352d7c27828495229a,28fdea874f68cac6c36651b1fc7272fd2199c48d)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[78f57ef9d50a75326da73d352d7c27828495229a,a58923756b0f8e71032070c23ae0b167e46731da)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[78f57ef9d50a75326da73d352d7c27828495229a,bace2010dd7ac07bc980575afb135c406730a7fe)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "5.8"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,5.8)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.12.110,6.12.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.18.52,6.18.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2.6,7.2.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.3-rc1,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-09-19T05:15:10.871084+00:00", "updated": "2026-09-19T07:00:10.672292+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-362"]}