Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: ntfs3: add buffer boundary checks to run_unpack() run_unpack() checks `run_buf < run_last` at the top of the while loop but then reads size_size and offset_size bytes via run_unpack_s64() without verifying they fit within the remaining buffer. A crafted NTFS image with truncated run data in an MFT attribute triggers an OOB heap read of up to 15 bytes when the filesystem is mounted. Add boundary checks before each run_unpack_s64() call to ensure the declared field size does not exceed the remaining buffer. Found by fuzzing with a source-patched harness (LibAFL + QEMU).
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.15, < 5.15.209 |
References
- https://git.kernel.org/stable/c/41aadf5cb482793a24e05aa136224e179a778586Patch
- https://git.kernel.org/stable/c/425de2aba0d061b3e715d51a3b1992c112ed5b99Patch
- https://git.kernel.org/stable/c/b62567bca47408e6739dee75f02a2113548af875Patch
- https://git.kernel.org/stable/c/bbad75336870b51b81979b97613746237fcb02fePatch
- https://git.kernel.org/stable/c/bf7ac4a1d3bfc6e56e54635c3d331a68170d37c9Patch
- https://git.kernel.org/stable/c/d3012690a7065d9ca86521a525ad11e8af491d45Patch
- https://git.kernel.org/stable/c/e64f7dfcaff79e7dfff9121a382dd77f9b462f62Patch
FAQ
What is CVE-2026-46072?
CVE-2026-46072 is a vulnerability with a CVSS score of 5.5 (MEDIUM). In the Linux kernel, the following vulnerability has been resolved: ntfs3: add buffer boundary checks to run_unpack() run_unpack() checks `run_buf < run_last` at the top of the while loop but then r...
How severe is CVE-2026-46072?
CVE-2026-46072 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-46072?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.