{"api_version":"1","generated_at":"2026-07-04T18:27:42+00:00","cve":"CVE-2026-53123","urls":{"html":"https://cve.report/CVE-2026-53123","api":"https://cve.report/api/cve/CVE-2026-53123.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-53123","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-53123"},"summary":{"title":"md: wake raid456 reshape waiters before suspend","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmd: wake raid456 reshape waiters before suspend\n\nDuring raid456 reshape, direct IO across the reshape position can sleep\nin raid5_make_request() waiting for reshape progress while still\nholding an active_io reference. If userspace then freezes reshape and\nwrites md/suspend_lo or md/suspend_hi, mddev_suspend() kills active_io\nand waits for all in-flight IO to drain.\n\nThis can deadlock: the IO needs reshape progress to continue, but the\nreshape thread is already frozen, so the active_io reference is never\ndropped and suspend never completes.\n\nraid5_prepare_suspend() already wakes wait_for_reshape for dm-raid. Do\nthe same for normal md suspend when reshape is already interrupted, so\nwaiting raid456 IO can abort, drop its reference, and let suspend\nfinish.\n\nThe mdadm test tests/25raid456-reshape-deadlock reproduces the hang.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-06-24 17:17:26","updated_at":"2026-06-24 17:17:26"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/ff6b93410192b812d73cc54062529715b2dc849f","name":"https://git.kernel.org/stable/c/ff6b93410192b812d73cc54062529715b2dc849f","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/8ae3e14d7f3df58f7f49c02d74344e3dcd5f84f0","name":"https://git.kernel.org/stable/c/8ae3e14d7f3df58f7f49c02d74344e3dcd5f84f0","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/8b6a72420821e6da2cab6a69d5233500d2698b93","name":"https://git.kernel.org/stable/c/8b6a72420821e6da2cab6a69d5233500d2698b93","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/cf86bb53b9c92354904a328e947a05ffbfdd1840","name":"https://git.kernel.org/stable/c/cf86bb53b9c92354904a328e947a05ffbfdd1840","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-53123","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-53123","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 714d20150ed85811193ae07a494d91f9927c590f 8b6a72420821e6da2cab6a69d5233500d2698b93 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 714d20150ed85811193ae07a494d91f9927c590f ff6b93410192b812d73cc54062529715b2dc849f git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 714d20150ed85811193ae07a494d91f9927c590f 8ae3e14d7f3df58f7f49c02d74344e3dcd5f84f0 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 714d20150ed85811193ae07a494d91f9927c590f cf86bb53b9c92354904a328e947a05ffbfdd1840 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.7","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.7 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.91 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.33 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0.10 7.0.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"53123","cve":"CVE-2026-53123","epss":"0.001710000","percentile":"0.067770000","score_date":"2026-06-29","updated_at":"2026-06-30 00:06:55"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/md/md.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"8b6a72420821e6da2cab6a69d5233500d2698b93","status":"affected","version":"714d20150ed85811193ae07a494d91f9927c590f","versionType":"git"},{"lessThan":"ff6b93410192b812d73cc54062529715b2dc849f","status":"affected","version":"714d20150ed85811193ae07a494d91f9927c590f","versionType":"git"},{"lessThan":"8ae3e14d7f3df58f7f49c02d74344e3dcd5f84f0","status":"affected","version":"714d20150ed85811193ae07a494d91f9927c590f","versionType":"git"},{"lessThan":"cf86bb53b9c92354904a328e947a05ffbfdd1840","status":"affected","version":"714d20150ed85811193ae07a494d91f9927c590f","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/md/md.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.7"},{"lessThan":"6.7","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.91","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.33","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.10","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.91","versionStartIncluding":"6.7","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.33","versionStartIncluding":"6.7","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0.10","versionStartIncluding":"6.7","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1","versionStartIncluding":"6.7","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nmd: wake raid456 reshape waiters before suspend\n\nDuring raid456 reshape, direct IO across the reshape position can sleep\nin raid5_make_request() waiting for reshape progress while still\nholding an active_io reference. If userspace then freezes reshape and\nwrites md/suspend_lo or md/suspend_hi, mddev_suspend() kills active_io\nand waits for all in-flight IO to drain.\n\nThis can deadlock: the IO needs reshape progress to continue, but the\nreshape thread is already frozen, so the active_io reference is never\ndropped and suspend never completes.\n\nraid5_prepare_suspend() already wakes wait_for_reshape for dm-raid. Do\nthe same for normal md suspend when reshape is already interrupted, so\nwaiting raid456 IO can abort, drop its reference, and let suspend\nfinish.\n\nThe mdadm test tests/25raid456-reshape-deadlock reproduces the hang."}],"providerMetadata":{"dateUpdated":"2026-06-24T16:30:52.609Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/8b6a72420821e6da2cab6a69d5233500d2698b93"},{"url":"https://git.kernel.org/stable/c/ff6b93410192b812d73cc54062529715b2dc849f"},{"url":"https://git.kernel.org/stable/c/8ae3e14d7f3df58f7f49c02d74344e3dcd5f84f0"},{"url":"https://git.kernel.org/stable/c/cf86bb53b9c92354904a328e947a05ffbfdd1840"}],"title":"md: wake raid456 reshape waiters before suspend","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-53123","datePublished":"2026-06-24T16:30:52.609Z","dateReserved":"2026-06-09T07:44:35.386Z","dateUpdated":"2026-06-24T16:30:52.609Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-06-24 17:17:26","lastModifiedDate":"2026-06-24 17:17:26","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"53123","Ordinal":"1","Title":"md: wake raid456 reshape waiters before suspend","CVE":"CVE-2026-53123","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"53123","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nmd: wake raid456 reshape waiters before suspend\n\nDuring raid456 reshape, direct IO across the reshape position can sleep\nin raid5_make_request() waiting for reshape progress while still\nholding an active_io reference. If userspace then freezes reshape and\nwrites md/suspend_lo or md/suspend_hi, mddev_suspend() kills active_io\nand waits for all in-flight IO to drain.\n\nThis can deadlock: the IO needs reshape progress to continue, but the\nreshape thread is already frozen, so the active_io reference is never\ndropped and suspend never completes.\n\nraid5_prepare_suspend() already wakes wait_for_reshape for dm-raid. Do\nthe same for normal md suspend when reshape is already interrupted, so\nwaiting raid456 IO can abort, drop its reference, and let suspend\nfinish.\n\nThe mdadm test tests/25raid456-reshape-deadlock reproduces the hang.","Type":"Description","Title":"md: wake raid456 reshape waiters before suspend"}]}}}