{"id":"CVE-2026-99242","aliases":[],"cve":{"records":[{"id":"CVE-2026-99242","source":"Linux","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-09-25T10:25:14.403Z","published":"2026-11-02T16:06:44.590Z","modified":"2026-11-02T16:06:44.590Z"}],"publishers":[{"name":"Linux","role":"CNA","organizationId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","modified":"2026-11-02T16:06:44.590Z"}],"references":[{"url":"https://git.kernel.org/stable/c/7dd1c2fec6ebdd1a88a02cb58ff515a258eeb327","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/67aded1da114dc44808315f249bd9e7e440f799d","tags":[],"source":"Linux"}],"weaknesses":[],"applicability":[{"source":"Linux","statements":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"7.1","versionEndExcluding":"7.2.14"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"7.1","versionEndExcluding":"7.3"}]}]}]}],"prioritization":[]},"title":"ntfs: fix race between fallocate and mmap reads","titleSource":"Linux","descriptionSource":"Linux","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nntfs: fix race between fallocate and mmap reads\n\nThe fallocate implementation only takes invalidate_lock for punch hole,\ncollapse range, and insert range operations. For standard allocation modes\n(mode == 0, FALLOC_FL_KEEP_SIZE), the lock is not held.\n\nDuring ntfs_attr_fallocate(), new clusters are mapped to the runlist via\nntfs_attr_map_cluster() before being zeroed by ntfs_dio_zero_range(). This\ncreates a window where concurrent mmap page faults can read uninitialized\ndisk data.\n\nSince mmap uses filemap_fault() which takes invalidate_lock in shared mode,\nit can fault in pages during this window and expose old disk contents to\nuserspace. This is an information leak and data integrity issue.\n\nFix by taking invalidate_lock for all fallocate operations, not just for\npunch/collapse/insert modes. This prevents concurrent page faults from\naccessing unzeroed clusters during the allocation window.","score":null,"severity":"unknown","published":"2026-11-02T16:06:44.590Z","modified":"2026-11-02T16:06:44.590Z","withdrawn":false,"knownExploited":false,"affected":[],"products":[{"vendor":"Linux","name":"Linux","platforms":[],"versions":[{"version":"495e90fa334828d4119061e2726af51d0a0fb4ed","status":"affected","lessThan":"7dd1c2fec6ebdd1a88a02cb58ff515a258eeb327","versionType":"git"},{"version":"495e90fa334828d4119061e2726af51d0a0fb4ed","status":"affected","lessThan":"67aded1da114dc44808315f249bd9e7e440f799d","versionType":"git"}],"defaultStatus":"unaffected","cpes":[],"source":"Linux","url":"https://www.cve.org/CVERecord?id=CVE-2026-99242"},{"vendor":"Linux","name":"Linux","platforms":[],"versions":[{"version":"7.1","status":"affected"},{"version":"0","status":"unaffected","lessThan":"7.1","versionType":"semver"},{"version":"7.2.14","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"defaultStatus":"affected","cpes":[],"source":"Linux","url":"https://www.cve.org/CVERecord?id=CVE-2026-99242"}],"remediation":[],"references":["https://git.kernel.org/stable/c/7dd1c2fec6ebdd1a88a02cb58ff515a258eeb327","https://git.kernel.org/stable/c/67aded1da114dc44808315f249bd9e7e440f799d"],"sources":[{"name":"CVE","id":"CVE-2026-99242","modified":"2026-11-02T16:06:44.590Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-99242"}],"assessments":[],"sourceAffected":[],"observedAt":"2026-11-02T16:16:15.883Z","kev":{"status":"not-listed","checkedAt":"2026-11-06T21:20:33.816Z"},"coverage":[{"source":"NVD","status":"available","checkedAt":"2026-11-02T16:20:35.534Z","attemptedAt":"2026-11-02T16:20:35.534Z"},{"source":"GHSA","status":"no-result","checkedAt":"2026-11-02T16:20:35.509Z","attemptedAt":"2026-11-02T16:20:35.509Z"},{"source":"EUVD","status":"no-result","checkedAt":"2026-11-02T16:20:36.700Z","attemptedAt":"2026-11-02T16:20:36.700Z"},{"source":"EPSS","status":"no-result","checkedAt":"2026-11-02T16:20:36.215Z","attemptedAt":"2026-11-02T16:20:36.215Z"}],"evidence":[{"source":"NVD","id":"CVE-2026-99242","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-99242","modified":"2026-11-02T16:17:50.040","checkedAt":"2026-11-02T16:20:35.534Z"}],"aiSummary":null}