{"api_version":"1","generated_at":"2026-06-26T02:37:04+00:00","cve":"CVE-2026-52992","urls":{"html":"https://cve.report/CVE-2026-52992","api":"https://cve.report/api/cve/CVE-2026-52992.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-52992","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-52992"},"summary":{"title":"fs/adfs: validate nzones in adfs_validate_bblk()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nfs/adfs: validate nzones in adfs_validate_bblk()\n\nReject ADFS disc records with a zero zone count during boot block\nvalidation, before the disc record is used.\n\nWhen nzones is 0, adfs_read_map() passes it to kmalloc_array(0, ...)\nwhich returns ZERO_SIZE_PTR, and adfs_map_layout() then writes to\ndm[-1], causing an out-of-bounds write before the allocated buffer.\n\nadfs_validate_dr0() already rejects nzones != 1 for old-format\nimages.  Add the equivalent check to adfs_validate_bblk() for\nnew-format images so that a crafted image with nzones == 0 is\nrejected at probe time.\n\nFound by syzkaller.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-06-24 17:17:10","updated_at":"2026-06-24 17:17:10"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/6ff8cca5cdb4f2e0ea6d28ecd78479dd3f221ebc","name":"https://git.kernel.org/stable/c/6ff8cca5cdb4f2e0ea6d28ecd78479dd3f221ebc","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/a3fd5dc1c7b0aae947a67dc2e2c037d57557a4de","name":"https://git.kernel.org/stable/c/a3fd5dc1c7b0aae947a67dc2e2c037d57557a4de","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/60d82592ac8b5637fbed871381eb0a16df0a492e","name":"https://git.kernel.org/stable/c/60d82592ac8b5637fbed871381eb0a16df0a492e","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/33aafd2418a59c96c0389d47ea09026661fa9ec6","name":"https://git.kernel.org/stable/c/33aafd2418a59c96c0389d47ea09026661fa9ec6","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/dd9d3e16c2d5fa166e13dce07413be51f42c8f5d","name":"https://git.kernel.org/stable/c/dd9d3e16c2d5fa166e13dce07413be51f42c8f5d","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/1f0ed0f57f0fc87e46fe19a05435c214dc464be2","name":"https://git.kernel.org/stable/c/1f0ed0f57f0fc87e46fe19a05435c214dc464be2","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/a11372a8b1ceaa5e950a84b3b5fbf8228f25e277","name":"https://git.kernel.org/stable/c/a11372a8b1ceaa5e950a84b3b5fbf8228f25e277","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/1586bd2d2fb436a26df20a70e78b000d34a7d159","name":"https://git.kernel.org/stable/c/1586bd2d2fb436a26df20a70e78b000d34a7d159","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-52992","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-52992","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected f6f14a0d71b0773a1d4147d1a3c33d537cd213ab 33aafd2418a59c96c0389d47ea09026661fa9ec6 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected f6f14a0d71b0773a1d4147d1a3c33d537cd213ab 1f0ed0f57f0fc87e46fe19a05435c214dc464be2 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected f6f14a0d71b0773a1d4147d1a3c33d537cd213ab 6ff8cca5cdb4f2e0ea6d28ecd78479dd3f221ebc git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected f6f14a0d71b0773a1d4147d1a3c33d537cd213ab a11372a8b1ceaa5e950a84b3b5fbf8228f25e277 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 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semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.15.209 5.15.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.175 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.141 6.6.* 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":"52992","cve":"CVE-2026-52992","epss":"0.001840000","percentile":"0.081720000","score_date":"2026-06-25","updated_at":"2026-06-26 00:06:15"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["fs/adfs/super.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"33aafd2418a59c96c0389d47ea09026661fa9ec6","status":"affected","version":"f6f14a0d71b0773a1d4147d1a3c33d537cd213ab","versionType":"git"},{"lessThan":"1f0ed0f57f0fc87e46fe19a05435c214dc464be2","status":"affected","version":"f6f14a0d71b0773a1d4147d1a3c33d537cd213ab","versionType":"git"},{"lessThan":"6ff8cca5cdb4f2e0ea6d28ecd78479dd3f221ebc","status":"affected","version":"f6f14a0d71b0773a1d4147d1a3c33d537cd213ab","versionType":"git"},{"lessThan":"a11372a8b1ceaa5e950a84b3b5fbf8228f25e277","status":"affected","version":"f6f14a0d71b0773a1d4147d1a3c33d537cd213ab","versionType":"git"},{"lessThan":"1586bd2d2fb436a26df20a70e78b000d34a7d159","status":"affected","version":"f6f14a0d71b0773a1d4147d1a3c33d537cd213ab","versionType":"git"},{"lessThan":"a3fd5dc1c7b0aae947a67dc2e2c037d57557a4de","status":"affected","version":"f6f14a0d71b0773a1d4147d1a3c33d537cd213ab","versionType":"git"},{"lessThan":"60d82592ac8b5637fbed871381eb0a16df0a492e","status":"affected","version":"f6f14a0d71b0773a1d4147d1a3c33d537cd213ab","versionType":"git"},{"lessThan":"dd9d3e16c2d5fa166e13dce07413be51f42c8f5d","status":"affected","version":"f6f14a0d71b0773a1d4147d1a3c33d537cd213ab","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["fs/adfs/super.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.6"},{"lessThan":"5.6","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.258","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.209","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.175","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.141","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":"5.10.258","versionStartIncluding":"5.6","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.209","versionStartIncluding":"5.6","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.175","versionStartIncluding":"5.6","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.141","versionStartIncluding":"5.6","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.91","versionStartIncluding":"5.6","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.33","versionStartIncluding":"5.6","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0.10","versionStartIncluding":"5.6","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1","versionStartIncluding":"5.6","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nfs/adfs: validate nzones in adfs_validate_bblk()\n\nReject ADFS disc records with a zero zone count during boot block\nvalidation, before the disc record is used.\n\nWhen nzones is 0, adfs_read_map() passes it to kmalloc_array(0, ...)\nwhich returns ZERO_SIZE_PTR, and adfs_map_layout() then writes to\ndm[-1], causing an out-of-bounds write before the allocated buffer.\n\nadfs_validate_dr0() already rejects nzones != 1 for old-format\nimages.  Add the equivalent check to adfs_validate_bblk() for\nnew-format images so that a crafted image with nzones == 0 is\nrejected at probe time.\n\nFound by syzkaller."}],"providerMetadata":{"dateUpdated":"2026-06-24T16:29:05.592Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/33aafd2418a59c96c0389d47ea09026661fa9ec6"},{"url":"https://git.kernel.org/stable/c/1f0ed0f57f0fc87e46fe19a05435c214dc464be2"},{"url":"https://git.kernel.org/stable/c/6ff8cca5cdb4f2e0ea6d28ecd78479dd3f221ebc"},{"url":"https://git.kernel.org/stable/c/a11372a8b1ceaa5e950a84b3b5fbf8228f25e277"},{"url":"https://git.kernel.org/stable/c/1586bd2d2fb436a26df20a70e78b000d34a7d159"},{"url":"https://git.kernel.org/stable/c/a3fd5dc1c7b0aae947a67dc2e2c037d57557a4de"},{"url":"https://git.kernel.org/stable/c/60d82592ac8b5637fbed871381eb0a16df0a492e"},{"url":"https://git.kernel.org/stable/c/dd9d3e16c2d5fa166e13dce07413be51f42c8f5d"}],"title":"fs/adfs: validate nzones in adfs_validate_bblk()","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-52992","datePublished":"2026-06-24T16:29:05.592Z","dateReserved":"2026-06-09T07:44:35.377Z","dateUpdated":"2026-06-24T16:29:05.592Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-06-24 17:17:10","lastModifiedDate":"2026-06-24 17:17:10","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"52992","Ordinal":"1","Title":"fs/adfs: validate nzones in adfs_validate_bblk()","CVE":"CVE-2026-52992","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"52992","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nfs/adfs: validate nzones in adfs_validate_bblk()\n\nReject ADFS disc records with a zero zone count during boot block\nvalidation, before the disc record is used.\n\nWhen nzones is 0, adfs_read_map() passes it to kmalloc_array(0, ...)\nwhich returns ZERO_SIZE_PTR, and adfs_map_layout() then writes to\ndm[-1], causing an out-of-bounds write before the allocated buffer.\n\nadfs_validate_dr0() already rejects nzones != 1 for old-format\nimages.  Add the equivalent check to adfs_validate_bblk() for\nnew-format images so that a crafted image with nzones == 0 is\nrejected at probe time.\n\nFound by syzkaller.","Type":"Description","Title":"fs/adfs: validate nzones in adfs_validate_bblk()"}]}}}