{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-53029", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-06-09T07:44:35.380Z", "datePublished": "2026-06-24T16:29:37.361Z", "dateUpdated": "2026-06-24T16:29:37.361Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-06-24T16:29:37.361Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfs/ntfs3: prevent uninitialized lcn caused by zero len\n\nsyzbot reported a uninit-value in ntfs_iomap_begin [1].\n\nSince runs was not touched yet, run_lookup_entry() immediately fails\nand returns false, which makes the value of \"*len\" 0.\nSimultaneously, the new value and err value are also 0, causing the\nlogic in attr_data_get_block_locked() to jump directly to ok, ultimately\nresulting in *lcn being triggered before it is set [1].\n\nIn ntfs_iomap_begin(), the check for a 0 value in clen is moved forward\nto before updating lcn to avoid this [1].\n\n[1]\nBUG: KMSAN: uninit-value in ntfs_iomap_begin+0x8c0/0x1460 fs/ntfs3/inode.c:825\n ntfs_iomap_begin+0x8c0/0x1460 fs/ntfs3/inode.c:825\n iomap_iter+0x9b7/0x1540 fs/iomap/iter.c:110\n\nLocal variable lcn created at:\n ntfs_iomap_begin+0x15d/0x1460 fs/ntfs3/inode.c:786"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/ntfs3/inode.c"], "versions": [{"version": "10d7c95af043b45a85dc738c3271bf760ff3577e", "lessThan": "485f750cac3d8bdf5552a0e3d79ce5e3a03ece49", "status": "affected", "versionType": "git"}, {"version": "10d7c95af043b45a85dc738c3271bf760ff3577e", "lessThan": "e98266e823a1fa06fe6499df61aeaac2fd6f7a49", "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/ntfs3/inode.c"], "versions": [{"version": "7.0", "status": "affected"}, {"version": "0", "lessThan": "7.0", "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": "7.0", "versionEndExcluding": "7.0.10"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "7.0", "versionEndExcluding": "7.1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/485f750cac3d8bdf5552a0e3d79ce5e3a03ece49"}, {"url": "https://git.kernel.org/stable/c/e98266e823a1fa06fe6499df61aeaac2fd6f7a49"}], "title": "fs/ntfs3: prevent uninitialized lcn caused by zero len", "x_generator": {"engine": "bippy-1.2.0"}}}}

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