CVE-2026-72200
ntfs: detect mapping-pairs LCN accumulator overflow
CVSS Score
9.8
EPSS Score
0.0%
EPSS Percentile
0th
In the Linux kernel, the following vulnerability has been resolved: ntfs: detect mapping-pairs LCN accumulator overflow The NTFS mapping-pairs parser accumulates relative LCN deltas in a signed integer. A corrupted attribute can drive that addition past the representable range. One corrupt runlist shape sets the accumulated LCN to S64_MAX and then adds a delta of 1 in the next mapping-pairs entry. Signed overflow is undefined and can turn an invalid runlist into a different set of physical clusters. Check the LCN addition for overflow before storing the next run.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Aug 15, 2026 |
| Last Updated | Oct 30, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
Linux / Linux
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < b06b4fc2138ded8ee0b3dc602991ff6dbb10dd0a 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 6626fb859f4c4772f2f59751d23937716e03f98f 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 7ffa8f3d30236e0ab897c30bdb01224ff1fe1c89 1e9ea7e04472d4e5e12e58c881eaacfb3e49b669 < 7fb64788812d137b37f6d8724e1e41c624c1e814 1e9ea7e04472d4e5e12e58c881eaacfb3e49b669 < ec4f061f2219e0f0c6465d56d0380bf749235a53
Linux / Linux
2.6.12 7.1
References
git.kernel.org: https://git.kernel.org/stable/c/b06b4fc2138ded8ee0b3dc602991ff6dbb10dd0a git.kernel.org: https://git.kernel.org/stable/c/6626fb859f4c4772f2f59751d23937716e03f98f git.kernel.org: https://git.kernel.org/stable/c/7ffa8f3d30236e0ab897c30bdb01224ff1fe1c89 git.kernel.org: https://git.kernel.org/stable/c/7fb64788812d137b37f6d8724e1e41c624c1e814 git.kernel.org: https://git.kernel.org/stable/c/ec4f061f2219e0f0c6465d56d0380bf749235a53