CVE-2026-72196
CVE-2026-72196: 1 tracked advisory record across Red Hat. Compare vendor sources.
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Red Hat
1 advisory- Advisory severityMedium5.5
Medium [CVE-2026-72196] bound copy_lcns dp->page_lcns index in analysis pass
CVE-2026-72196Source published Source updated
In the Linux kernel, the following vulnerability has been resolved: fs/ntfs3: bound copy_lcns dp->page_lcns[] index in analysis pass In log_replay()'s analysis pass, after find_dp() returns a valid DIR_PAGE_ENTRY for the (target_attr, target_vcn) tuple, the copy_lcns block walks lrh->lcns_follow further entries: t16 = le16_to_cpu(lrh->lcns_follow); for (i = 0; i target_vcn) - le64_to_cpu(dp->vcn)); dp->page_lcns[j + i] = lrh->page_lcns[i]; } find_dp() only validates that target_vcn falls within [dp->vcn, dp->vcn + dp->lcns_follow), i.e., that the FIRST cluster is covered. The walk through the further entries is not bounded against dp->lcns_follow. For a malformed LRH where target_vcn = dp->vcn + dp->lcns_follow - 1 and lrh->lcns_follow > 1, the i > 0 writes overflow the dp's allocated…
- Affected products in this advisory
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- Source-reported affected versions
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- Source-reported fixed versions
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- Mitigation guidance
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