{"api_version":"1","generated_at":"2026-05-07T03:02:25+00:00","cve":"CVE-2026-43166","urls":{"html":"https://cve.report/CVE-2026-43166","api":"https://cve.report/api/cve/CVE-2026-43166.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-43166","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-43166"},"summary":{"title":"erofs: fix interlaced plain identification for encoded extents","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nerofs: fix interlaced plain identification for encoded extents\n\nOnly plain data whose start position and on-disk physical length are\nboth aligned to the block size should be classified as interlaced\nplain extents. Otherwise, it must be treated as shifted plain extents.\n\nThis issue was found by syzbot using a crafted compressed image\ncontaining plain extents with unaligned physical lengths, which can\ncause OOB read in z_erofs_transform_plain().","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/d3790f26d38606f020212486359b84632c19d08b","name":"https://git.kernel.org/stable/c/d3790f26d38606f020212486359b84632c19d08b","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/9d5a97bc71ed5783687705c708454c4453aa91d1","name":"https://git.kernel.org/stable/c/9d5a97bc71ed5783687705c708454c4453aa91d1","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/4a2d046e4b13202a6301a993961f5b30ae4d7119","name":"https://git.kernel.org/stable/c/4a2d046e4b13202a6301a993961f5b30ae4d7119","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-43166","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-43166","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1d191b4ca51d73699cb127386b95ac152af2b930 9d5a97bc71ed5783687705c708454c4453aa91d1 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1d191b4ca51d73699cb127386b95ac152af2b930 d3790f26d38606f020212486359b84632c19d08b git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1d191b4ca51d73699cb127386b95ac152af2b930 4a2d046e4b13202a6301a993961f5b30ae4d7119 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.15","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.15 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":["fs/erofs/zmap.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"9d5a97bc71ed5783687705c708454c4453aa91d1","status":"affected","version":"1d191b4ca51d73699cb127386b95ac152af2b930","versionType":"git"},{"lessThan":"d3790f26d38606f020212486359b84632c19d08b","status":"affected","version":"1d191b4ca51d73699cb127386b95ac152af2b930","versionType":"git"},{"lessThan":"4a2d046e4b13202a6301a993961f5b30ae4d7119","status":"affected","version":"1d191b4ca51d73699cb127386b95ac152af2b930","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["fs/erofs/zmap.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.15"},{"lessThan":"6.15","status":"unaffected","version":"0","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":"6.18.16","versionStartIncluding":"6.15","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.19.6","versionStartIncluding":"6.15","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0","versionStartIncluding":"6.15","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nerofs: fix interlaced plain identification for encoded extents\n\nOnly plain data whose start position and on-disk physical length are\nboth aligned to the block size should be classified as interlaced\nplain extents. Otherwise, it must be treated as shifted plain extents.\n\nThis issue was found by syzbot using a crafted compressed image\ncontaining plain extents with unaligned physical lengths, which can\ncause OOB read in z_erofs_transform_plain()."}],"providerMetadata":{"dateUpdated":"2026-05-06T11:27:43.242Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/9d5a97bc71ed5783687705c708454c4453aa91d1"},{"url":"https://git.kernel.org/stable/c/d3790f26d38606f020212486359b84632c19d08b"},{"url":"https://git.kernel.org/stable/c/4a2d046e4b13202a6301a993961f5b30ae4d7119"}],"title":"erofs: fix interlaced plain identification for encoded extents","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-43166","datePublished":"2026-05-06T11:27:43.242Z","dateReserved":"2026-05-01T14:12:55.990Z","dateUpdated":"2026-05-06T11:27:43.242Z","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":"43166","Ordinal":"1","Title":"erofs: fix interlaced plain identification for encoded extents","CVE":"CVE-2026-43166","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"43166","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nerofs: fix interlaced plain identification for encoded extents\n\nOnly plain data whose start position and on-disk physical length are\nboth aligned to the block size should be classified as interlaced\nplain extents. Otherwise, it must be treated as shifted plain extents.\n\nThis issue was found by syzbot using a crafted compressed image\ncontaining plain extents with unaligned physical lengths, which can\ncause OOB read in z_erofs_transform_plain().","Type":"Description","Title":"erofs: fix interlaced plain identification for encoded extents"}]}}}