CVE-2026-72200
CriticalCVSS 9.8Exploitation Probability (EPSS)
Low risk9th percentile - higher than 9% of all known CVEs
Summary
In the Linux kernel, the NTFS filesystem detects mapping-pairs LCN accumulator overflow. The parser accumulates relative LCN deltas in a signed integer, and a corrupted attribute can drive the addition past the representable range. An overflow check is added before storing the next run.
Risk Assessment
Signed overflow is undefined and can turn an invalid runlist into a different set of physical clusters, potentially leading to data access errors or crashes.
Recommendation
Apply the kernel update containing this fix.
Original NVD description (English source)
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.