{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-52992", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-06-09T07:44:35.377Z", "datePublished": "2026-06-24T16:29:05.592Z", "dateUpdated": "2026-06-24T16:29:05.592Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-06-24T16:29:05.592Z"}, "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."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/adfs/super.c"], "versions": [{"version": "f6f14a0d71b0773a1d4147d1a3c33d537cd213ab", "lessThan": "33aafd2418a59c96c0389d47ea09026661fa9ec6", "status": "affected", "versionType": "git"}, {"version": "f6f14a0d71b0773a1d4147d1a3c33d537cd213ab", "lessThan": "1f0ed0f57f0fc87e46fe19a05435c214dc464be2", "status": "affected", "versionType": "git"}, {"version": "f6f14a0d71b0773a1d4147d1a3c33d537cd213ab", "lessThan": "6ff8cca5cdb4f2e0ea6d28ecd78479dd3f221ebc", "status": "affected", "versionType": "git"}, {"version": "f6f14a0d71b0773a1d4147d1a3c33d537cd213ab", "lessThan": "a11372a8b1ceaa5e950a84b3b5fbf8228f25e277", "status": "affected", "versionType": "git"}, {"version": "f6f14a0d71b0773a1d4147d1a3c33d537cd213ab", "lessThan": "1586bd2d2fb436a26df20a70e78b000d34a7d159", "status": "affected", "versionType": "git"}, {"version": "f6f14a0d71b0773a1d4147d1a3c33d537cd213ab", "lessThan": "a3fd5dc1c7b0aae947a67dc2e2c037d57557a4de", "status": "affected", "versionType": "git"}, {"version": "f6f14a0d71b0773a1d4147d1a3c33d537cd213ab", "lessThan": "60d82592ac8b5637fbed871381eb0a16df0a492e", "status": "affected", "versionType": "git"}, {"version": "f6f14a0d71b0773a1d4147d1a3c33d537cd213ab", "lessThan": "dd9d3e16c2d5fa166e13dce07413be51f42c8f5d", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/adfs/super.c"], "versions": [{"version": "5.6", "status": "affected"}, {"version": "0", "lessThan": "5.6", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.258", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.209", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.175", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.141", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.91", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.33", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0.10", "lessThanOrEqual": "7.0.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.6", "versionEndExcluding": "5.10.258"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.6", "versionEndExcluding": "5.15.209"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.6", "versionEndExcluding": "6.1.175"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.6", "versionEndExcluding": "6.6.141"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.6", "versionEndExcluding": "6.12.91"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.6", "versionEndExcluding": "6.18.33"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.6", "versionEndExcluding": "7.0.10"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.6", "versionEndExcluding": "7.1"}]}]}], "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"}}}}

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