{"id":"CVE-2026-72200","title":"ntfs: detect mapping-pairs LCN accumulator overflow","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nntfs: detect mapping-pairs LCN accumulator overflow\n\nThe NTFS mapping-pairs parser accumulates relative LCN deltas in a\nsigned integer.  A corrupted attribute can drive…","severity":"critical","cvss":9.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cvssSource":"cna","vendor":"Linux","product":"Linux","affected":["Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 6626fb859f4c4772f2f59751d23937716e03f98f","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 7ffa8f3d30236e0ab897c30bdb01224ff1fe1c89","Linux >= 1e9ea7e04472d4e5e12e58c881eaacfb3e49b669 < 7fb64788812d137b37f6d8724e1e41c624c1e814","Linux >= 1e9ea7e04472d4e5e12e58c881eaacfb3e49b669 < ec4f061f2219e0f0c6465d56d0380bf749235a53","Linux 2.6.12","Linux 7.1"],"published":"2026-08-15","updated":"2026-10-21","sourceUpdated":"2026-10-21T12:44:27.417Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-72200","references":[{"url":"https://git.kernel.org/stable/c/6626fb859f4c4772f2f59751d23937716e03f98f"},{"url":"https://git.kernel.org/stable/c/7ffa8f3d30236e0ab897c30bdb01224ff1fe1c89"},{"url":"https://git.kernel.org/stable/c/7fb64788812d137b37f6d8724e1e41c624c1e814"},{"url":"https://git.kernel.org/stable/c/ec4f061f2219e0f0c6465d56d0380bf749235a53"}],"tags":["cve.org"],"epss":0.00649,"epssPercentile":0.50212,"ingestedAt":"2026-10-21T12:48:53.593Z","slug":"CVE-2026-72200","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nntfs: detect mapping-pairs LCN accumulator overflow\n\nThe NTFS mapping-pairs parser accumulates relative LCN deltas in a\nsigned integer.  A corrupted attribute can drive that addition past\nthe representable range.\n\nOne corrupt runlist shape sets the accumulated LCN to S64_MAX and\nthen adds a delta of 1 in the next mapping-pairs entry.\n\nSigned overflow is undefined and can turn an invalid runlist into a\ndifferent set of physical clusters.\n\nCheck the LCN addition for overflow before storing the next run.\n\n## Affected\n\n- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 6626fb859f4c4772f2f59751d23937716e03f98f`\n- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 7ffa8f3d30236e0ab897c30bdb01224ff1fe1c89`\n- `Linux >= 1e9ea7e04472d4e5e12e58c881eaacfb3e49b669 < 7fb64788812d137b37f6d8724e1e41c624c1e814`\n- `Linux >= 1e9ea7e04472d4e5e12e58c881eaacfb3e49b669 < ec4f061f2219e0f0c6465d56d0380bf749235a53`\n- `Linux 2.6.12`\n- `Linux 7.1`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":54,"depthScoreParts":{"impact":53.9,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}