Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: ntfs3: fix integer overflow in run_unpack() volume boundary check The volume boundary check `lcn + len > sbi->used.bitmap.nbits` uses raw addition which can wrap around for large lcn and len values, bypassing the validation. Use check_add_overflow() as is already done for the adjacent prev_lcn + dlcn and vcn64 + len checks added by commit 3ac37e100385 ("ntfs3: Fix integer overflow in run_unpack()"). Found by fuzzing with a source-patched harness (LibAFL + QEMU).
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.15, < 5.15.209 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/424858f9a048057bb8f834bfe03d18f5e477e747Patch
- https://git.kernel.org/stable/c/60dab3e2931f3d792438a77a6cb0cb731c43300bPatch
- https://git.kernel.org/stable/c/6175d09c23bec4b60860ee9a0170308ff4b56e10Patch
- https://git.kernel.org/stable/c/984a415f019536ea2d24de9010744e5302a9a948Patch
- https://git.kernel.org/stable/c/a954061b334ec67c79ae9d0cadd83fa521396487Patch
- https://git.kernel.org/stable/c/e73cd5aed6b15e55c1c47577bdb473b5e88d6a69Patch
- https://git.kernel.org/stable/c/f1af27cec07a9fd0847166bdb23c99e86b05bfdcPatch
FAQ
What is CVE-2026-46062?
CVE-2026-46062 is a vulnerability with a CVSS score of 7.8 (HIGH). In the Linux kernel, the following vulnerability has been resolved: ntfs3: fix integer overflow in run_unpack() volume boundary check The volume boundary check `lcn + len > sbi->used.bitmap.nbits` u...
How severe is CVE-2026-46062?
CVE-2026-46062 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-46062?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.