{"api_version":"1","generated_at":"2026-06-04T12:45:07+00:00","cve":"CVE-2026-45953","urls":{"html":"https://cve.report/CVE-2026-45953","api":"https://cve.report/api/cve/CVE-2026-45953.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-45953","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-45953"},"summary":{"title":"md/raid5: fix IO hang with degraded array with llbitmap","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmd/raid5: fix IO hang with degraded array with llbitmap\n\nWhen llbitmap bit state is still unwritten, any new write should force\nrcw, as bitmap_ops->blocks_synced() is checked in handle_stripe_dirtying().\nHowever, later the same check is missing in need_this_block(), causing\nstripe to deadloop during handling because handle_stripe() will decide\nto go to handle_stripe_fill(), meanwhile need_this_block() always return\n0 and nothing is handled.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-05-27 14:17:11","updated_at":"2026-05-27 14:48:03"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/870b9f15867b0e70f3459ef3974b043e8b229690","name":"https://git.kernel.org/stable/c/870b9f15867b0e70f3459ef3974b043e8b229690","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/28ef299e7a5b81817f8ca8297c2ddff28f5da5e8","name":"https://git.kernel.org/stable/c/28ef299e7a5b81817f8ca8297c2ddff28f5da5e8","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/cd1635d844d26471c56c0a432abdee12fc9ad735","name":"https://git.kernel.org/stable/c/cd1635d844d26471c56c0a432abdee12fc9ad735","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-45953","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-45953","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5ab829f1971dc99f2aac10846c378e67fc875abc 870b9f15867b0e70f3459ef3974b043e8b229690 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5ab829f1971dc99f2aac10846c378e67fc875abc 28ef299e7a5b81817f8ca8297c2ddff28f5da5e8 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5ab829f1971dc99f2aac10846c378e67fc875abc cd1635d844d26471c56c0a432abdee12fc9ad735 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.18","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.14 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.19.4 6.19.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"45953","cve":"CVE-2026-45953","epss":"0.000170000","percentile":"0.042650000","score_date":"2026-06-01","updated_at":"2026-06-02 00:05:21"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/md/raid5.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"870b9f15867b0e70f3459ef3974b043e8b229690","status":"affected","version":"5ab829f1971dc99f2aac10846c378e67fc875abc","versionType":"git"},{"lessThan":"28ef299e7a5b81817f8ca8297c2ddff28f5da5e8","status":"affected","version":"5ab829f1971dc99f2aac10846c378e67fc875abc","versionType":"git"},{"lessThan":"cd1635d844d26471c56c0a432abdee12fc9ad735","status":"affected","version":"5ab829f1971dc99f2aac10846c378e67fc875abc","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/md/raid5.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.18"},{"lessThan":"6.18","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.14","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.4","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.0","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.14","versionStartIncluding":"6.18","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.19.4","versionStartIncluding":"6.18","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0","versionStartIncluding":"6.18","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nmd/raid5: fix IO hang with degraded array with llbitmap\n\nWhen llbitmap bit state is still unwritten, any new write should force\nrcw, as bitmap_ops->blocks_synced() is checked in handle_stripe_dirtying().\nHowever, later the same check is missing in need_this_block(), causing\nstripe to deadloop during handling because handle_stripe() will decide\nto go to handle_stripe_fill(), meanwhile need_this_block() always return\n0 and nothing is handled."}],"providerMetadata":{"dateUpdated":"2026-05-27T12:18:09.203Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/870b9f15867b0e70f3459ef3974b043e8b229690"},{"url":"https://git.kernel.org/stable/c/28ef299e7a5b81817f8ca8297c2ddff28f5da5e8"},{"url":"https://git.kernel.org/stable/c/cd1635d844d26471c56c0a432abdee12fc9ad735"}],"title":"md/raid5: fix IO hang with degraded array with llbitmap","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-45953","datePublished":"2026-05-27T12:18:09.203Z","dateReserved":"2026-05-13T15:03:33.088Z","dateUpdated":"2026-05-27T12:18:09.203Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-05-27 14:17:11","lastModifiedDate":"2026-05-27 14:48:03","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"45953","Ordinal":"1","Title":"md/raid5: fix IO hang with degraded array with llbitmap","CVE":"CVE-2026-45953","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"45953","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nmd/raid5: fix IO hang with degraded array with llbitmap\n\nWhen llbitmap bit state is still unwritten, any new write should force\nrcw, as bitmap_ops->blocks_synced() is checked in handle_stripe_dirtying().\nHowever, later the same check is missing in need_this_block(), causing\nstripe to deadloop during handling because handle_stripe() will decide\nto go to handle_stripe_fill(), meanwhile need_this_block() always return\n0 and nothing is handled.","Type":"Description","Title":"md/raid5: fix IO hang with degraded array with llbitmap"}]}}}