{"api_version":"1","generated_at":"2026-05-13T08:26:54+00:00","cve":"CVE-2026-43163","urls":{"html":"https://cve.report/CVE-2026-43163","api":"https://cve.report/api/cve/CVE-2026-43163.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-43163","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-43163"},"summary":{"title":"md/bitmap: fix GPF in write_page caused by resize race","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmd/bitmap: fix GPF in write_page caused by resize race\n\nA General Protection Fault occurs in write_page() during array resize:\nRIP: 0010:write_page+0x22b/0x3c0 [md_mod]\n\nThis is a use-after-free race between bitmap_daemon_work() and\n__bitmap_resize(). The daemon iterates over `bitmap->storage.filemap`\nwithout locking, while the resize path frees that storage via\nmd_bitmap_file_unmap(). `quiesce()` does not stop the md thread,\nallowing concurrent access to freed pages.\n\nFix by holding `mddev->bitmap_info.mutex` during the bitmap update.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-05-06 12:16:34","updated_at":"2026-05-06 13:07:51"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/a437e3bf30e32846079e470c1ba5ee790bccdf89","name":"https://git.kernel.org/stable/c/a437e3bf30e32846079e470c1ba5ee790bccdf89","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/ebcacc7ca22d5e8a03a970f0621ae1d1356b9ae8","name":"https://git.kernel.org/stable/c/ebcacc7ca22d5e8a03a970f0621ae1d1356b9ae8","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/46ef85f854dfa9d5226b3c1c46493d79556c9589","name":"https://git.kernel.org/stable/c/46ef85f854dfa9d5226b3c1c46493d79556c9589","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/d92b8fac294b5f915c50e65ce4ae2262e53614ec","name":"https://git.kernel.org/stable/c/d92b8fac294b5f915c50e65ce4ae2262e53614ec","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/140cc839fbeb1ddb33a8da8811b716d88d3905b7","name":"https://git.kernel.org/stable/c/140cc839fbeb1ddb33a8da8811b716d88d3905b7","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/d3af62411e19752c663fe4f424dbf49d95a4cc7c","name":"https://git.kernel.org/stable/c/d3af62411e19752c663fe4f424dbf49d95a4cc7c","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/9a6f8cd28bb9bb6ed86a6df19331fb08016dee7f","name":"https://git.kernel.org/stable/c/9a6f8cd28bb9bb6ed86a6df19331fb08016dee7f","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/5f73c8b33df9a605a591eab72d43a969600c1f8c","name":"https://git.kernel.org/stable/c/5f73c8b33df9a605a591eab72d43a969600c1f8c","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-43163","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-43163","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected d60b479d177a5735b6b4db6ee5280ef6653f50e7 140cc839fbeb1ddb33a8da8811b716d88d3905b7 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected d60b479d177a5735b6b4db6ee5280ef6653f50e7 ebcacc7ca22d5e8a03a970f0621ae1d1356b9ae8 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected d60b479d177a5735b6b4db6ee5280ef6653f50e7 d3af62411e19752c663fe4f424dbf49d95a4cc7c git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected d60b479d177a5735b6b4db6ee5280ef6653f50e7 d92b8fac294b5f915c50e65ce4ae2262e53614ec git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 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semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.15.202 5.15.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.165 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.128 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.75 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.16 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.19.6 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":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/md/md-bitmap.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"140cc839fbeb1ddb33a8da8811b716d88d3905b7","status":"affected","version":"d60b479d177a5735b6b4db6ee5280ef6653f50e7","versionType":"git"},{"lessThan":"ebcacc7ca22d5e8a03a970f0621ae1d1356b9ae8","status":"affected","version":"d60b479d177a5735b6b4db6ee5280ef6653f50e7","versionType":"git"},{"lessThan":"d3af62411e19752c663fe4f424dbf49d95a4cc7c","status":"affected","version":"d60b479d177a5735b6b4db6ee5280ef6653f50e7","versionType":"git"},{"lessThan":"d92b8fac294b5f915c50e65ce4ae2262e53614ec","status":"affected","version":"d60b479d177a5735b6b4db6ee5280ef6653f50e7","versionType":"git"},{"lessThan":"a437e3bf30e32846079e470c1ba5ee790bccdf89","status":"affected","version":"d60b479d177a5735b6b4db6ee5280ef6653f50e7","versionType":"git"},{"lessThan":"9a6f8cd28bb9bb6ed86a6df19331fb08016dee7f","status":"affected","version":"d60b479d177a5735b6b4db6ee5280ef6653f50e7","versionType":"git"},{"lessThan":"5f73c8b33df9a605a591eab72d43a969600c1f8c","status":"affected","version":"d60b479d177a5735b6b4db6ee5280ef6653f50e7","versionType":"git"},{"lessThan":"46ef85f854dfa9d5226b3c1c46493d79556c9589","status":"affected","version":"d60b479d177a5735b6b4db6ee5280ef6653f50e7","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/md/md-bitmap.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"3.5"},{"lessThan":"3.5","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.252","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.202","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.165","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.128","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.75","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.16","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.6","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":"5.10.252","versionStartIncluding":"3.5","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.202","versionStartIncluding":"3.5","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.165","versionStartIncluding":"3.5","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.128","versionStartIncluding":"3.5","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.75","versionStartIncluding":"3.5","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.16","versionStartIncluding":"3.5","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.19.6","versionStartIncluding":"3.5","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0","versionStartIncluding":"3.5","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nmd/bitmap: fix GPF in write_page caused by resize race\n\nA General Protection Fault occurs in write_page() during array resize:\nRIP: 0010:write_page+0x22b/0x3c0 [md_mod]\n\nThis is a use-after-free race between bitmap_daemon_work() and\n__bitmap_resize(). The daemon iterates over `bitmap->storage.filemap`\nwithout locking, while the resize path frees that storage via\nmd_bitmap_file_unmap(). `quiesce()` does not stop the md thread,\nallowing concurrent access to freed pages.\n\nFix by holding `mddev->bitmap_info.mutex` during the bitmap update."}],"providerMetadata":{"dateUpdated":"2026-05-06T11:27:41.265Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/140cc839fbeb1ddb33a8da8811b716d88d3905b7"},{"url":"https://git.kernel.org/stable/c/ebcacc7ca22d5e8a03a970f0621ae1d1356b9ae8"},{"url":"https://git.kernel.org/stable/c/d3af62411e19752c663fe4f424dbf49d95a4cc7c"},{"url":"https://git.kernel.org/stable/c/d92b8fac294b5f915c50e65ce4ae2262e53614ec"},{"url":"https://git.kernel.org/stable/c/a437e3bf30e32846079e470c1ba5ee790bccdf89"},{"url":"https://git.kernel.org/stable/c/9a6f8cd28bb9bb6ed86a6df19331fb08016dee7f"},{"url":"https://git.kernel.org/stable/c/5f73c8b33df9a605a591eab72d43a969600c1f8c"},{"url":"https://git.kernel.org/stable/c/46ef85f854dfa9d5226b3c1c46493d79556c9589"}],"title":"md/bitmap: fix GPF in write_page caused by resize race","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-43163","datePublished":"2026-05-06T11:27:41.265Z","dateReserved":"2026-05-01T14:12:55.990Z","dateUpdated":"2026-05-06T11:27:41.265Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-05-06 12:16:34","lastModifiedDate":"2026-05-06 13:07:51","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"43163","Ordinal":"1","Title":"md/bitmap: fix GPF in write_page caused by resize race","CVE":"CVE-2026-43163","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"43163","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nmd/bitmap: fix GPF in write_page caused by resize race\n\nA General Protection Fault occurs in write_page() during array resize:\nRIP: 0010:write_page+0x22b/0x3c0 [md_mod]\n\nThis is a use-after-free race between bitmap_daemon_work() and\n__bitmap_resize(). The daemon iterates over `bitmap->storage.filemap`\nwithout locking, while the resize path frees that storage via\nmd_bitmap_file_unmap(). `quiesce()` does not stop the md thread,\nallowing concurrent access to freed pages.\n\nFix by holding `mddev->bitmap_info.mutex` during the bitmap update.","Type":"Description","Title":"md/bitmap: fix GPF in write_page caused by resize race"}]}}}