What’s Vulnerable › Vulnerabilities

CVE-2026-72200: ntfs: detect mapping-pairs LCN accumulator overflow

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-15 · updated 2026-10-30

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.

Affected products

• Linux: 2.6.12, 7.1 — fixed in 7.2

How to fix

Upgrade to a fixed version: Linux 7.2. Check the vendor advisory for mitigations.

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

Get alerted when CVE-2026-72200 or the next vulnerability affects your stack