Description
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.
Metrics
CVSS 3.1 9.8/10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HAffected software
Source: the vendor's advisory (CNA). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < b06b4fc2138ded8ee0b3dc602991ff6dbb10dd0a; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 6626fb859f4c4772f2f59751d23937716e03f98f; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 7ffa8f3d30236e0ab897c30bdb01224ff1fe1c89; >= 1e9ea7e04472d4e5e12e58c881eaacfb3e49b669, < 7fb64788812d137b37f6d8724e1e41c624c1e814; >= 1e9ea7e04472d4e5e12e58c881eaacfb3e49b669, < ec4f061f2219e0f0c6465d56d0380bf749235a53 |
| Linux | Linux | 2.6.12; 7.1 |
References
- https://git.kernel.org/stable/c/6626fb859f4c4772f2f59751d23937716e03f98f
- https://git.kernel.org/stable/c/7fb64788812d137b37f6d8724e1e41c624c1e814
- https://git.kernel.org/stable/c/7ffa8f3d30236e0ab897c30bdb01224ff1fe1c89
- https://git.kernel.org/stable/c/b06b4fc2138ded8ee0b3dc602991ff6dbb10dd0a
- https://git.kernel.org/stable/c/ec4f061f2219e0f0c6465d56d0380bf749235a53
Timeline
- Published
- Aug 15, 2026
- Last modified
- Oct 30, 2026
- NVD status
- Received