# CVE-2026-90048

ntfs3 heap out-of-bounds write in Linux kernel via crafted NTFS attributes

- Page: https://www.vulneraibility.com/cve/CVE-2026-90048
- CVSS: 9.8
- Known exploited: not in CISA KEV as of our last sync
- EPSS: 0.72% (percentile 54.0)
- Published: 2026-09-16

## Affected versions

- Linux: affected >= 4342306f0f0d5ff4315a204d315c1b51b914fca5 and < 7e9aee7e4d9767cc3e423b3beecb01c7ebb6bbcd; >= 4342306f0f0d5ff4315a204d315c1b51b914fca5 and < fa2215cf451414b0512cd6f7d37a057893811f4d; >= 4342306f0f0d5ff4315a204d315c1b51b914fca5 and < d07e281f2a7710502985d6f80b95ddac8f4e81d5; >= 4342306f0f0d5ff4315a204d315c1b51b914fca5 and < a84f3db72561c4d9281c5ff721ce46b9ffa7f30e; >= 4342306f0f0d5ff4315a204d315c1b51b914fca5 and < 7c4841e2a62794a3bab7c1ff0540580f387e377f; 5.15; fixed in < 5.15, >= 6.6.157 and <= 6.6.*, >= 6.12.110 and <= 6.12.*, >= 6.18.51 and <= 6.18.*, >= 7.2.5 and <= 7.2.*, >= 7.3-rc1 and <= *

A version outside these ranges is not a statement that it is unaffected.

## Impact

Kernel heap OOB write via ntfs3 leading to kernel crash, local privilege escalation, or potential arbitrary kernel code execution.

## Action

Immediate action required

## Recommendation

Update to patched kernel or apply ntfs3 commits; avoid mounting untrusted NTFS images.

## References

- [other] https://git.kernel.org/stable/c/3a38f3c71bcd9bd58d86489c364bd29a4c2c860e
- [other] https://git.kernel.org/stable/c/7e9aee7e4d9767cc3e423b3beecb01c7ebb6bbcd
- [other] https://git.kernel.org/stable/c/fa2215cf451414b0512cd6f7d37a057893811f4d
- [other] https://git.kernel.org/stable/c/d07e281f2a7710502985d6f80b95ddac8f4e81d5
- [other] https://git.kernel.org/stable/c/a84f3db72561c4d9281c5ff721ce46b9ffa7f30e
- [other] https://git.kernel.org/stable/c/7c4841e2a62794a3bab7c1ff0540580f387e377f

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Summary, impact and action are written by the vulneraibility.com AI analysis pipeline from the CVE record, NVD, CISA and FIRST data; verify against the references.