CVE-2026-72200

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.

Score

CVSS 3.1 9.8 Critical

Status

Received - 416baaa9-dc9f-4396-8d5f-8c081fb06d67

Published

2026-08-15

Last modified

2026-10-21

Affected products

• Linux Kernel (Linux)

References

• https://git.kernel.org/stable/c/6626fb859f4c4772f2f59751d23937716e03f98f
• https://git.kernel.org/stable/c/7ffa8f3d30236e0ab897c30bdb01224ff1fe1c89
• https://git.kernel.org/stable/c/7fb64788812d137b37f6d8724e1e41c624c1e814
• https://git.kernel.org/stable/c/ec4f061f2219e0f0c6465d56d0380bf749235a53