by Kastro
Paper/Archive/CVE-2026-72200

CVE-2026-72200

Linux Linux — ntfs: detect mapping-pairs LCN accumulator overflow

EPSS 0.7%CVSS 9.8
critical.is priorityof 100
40
CVSS 9.8 (CNA)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 51.9.519 × 2010.4No public exploit+100.0SSVC exploitation: unknown+100.0
Description · from the CVE record

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

ProductAffectedFixed inSource
Linux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – < 6626fb859f4c4772f2f59751d23937716e03f98f6626fb859f4c4772f2f59751d23937716e03f98fCNA
Linux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – < 7ffa8f3d30236e0ab897c30bdb01224ff1fe1c897ffa8f3d30236e0ab897c30bdb01224ff1fe1c89CNA
Linux1e9ea7e04472d4e5e12e58c881eaacfb3e49b669 – < 7fb64788812d137b37f6d8724e1e41c624c1e8147fb64788812d137b37f6d8724e1e41c624c1e814CNA
Linux1e9ea7e04472d4e5e12e58c881eaacfb3e49b669 – < ec4f061f2219e0f0c6465d56d0380bf749235a53ec4f061f2219e0f0c6465d56d0380bf749235a53CNA
Linux2.6.12–CNA
Linux7.17.1.5CNA

Scores by source

Linux (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

refgit.kernel.org/stable/c/6626fb859f4c4772f2f59751d23937716e03f98frefgit.kernel.org/stable/c/7ffa8f3d30236e0ab897c30bdb01224ff1fe1c89refgit.kernel.org/stable/c/7fb64788812d137b37f6d8724e1e41c624c1e814refgit.kernel.org/stable/c/ec4f061f2219e0f0c6465d56d0380bf749235a53