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CVE-2026-68388
UNKNOWN · CVSS n/a
EPSS exploitation probability: 0%
Published 2026-08-10T13:20:32.060 · Last modified 2026-08-10T13:20:32.060

Summary

In the Linux kernel, the following vulnerability has been resolved: smb/client: handle overlapping allocated ranges in fallocate smb3_simple_fallocate_range() can skip holes when an allocated range returned by the server starts before the current fallocate offset. The skipped hole is not zero-filled, but fallocate still returns success. A later write to that hole may therefore fail with ENOSPC. The function queries allocated ranges so that it can preserve existing contents and write zeroes only into holes. However, the server may return a range that starts before the current fallocate offset. For example, assume the fallocate request is [100, 400) and the only allocated range returned by the server is [0, 200): Request: [100, 400) Server range: [ 0, 200) allocat

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.