High severity7.8NVD Advisory· Published May 27, 2026· Updated Jun 16, 2026
CVE-2026-46062
CVE-2026-46062
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).
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Affected products
4Patches
Vulnerability mechanics
References
7- git.kernel.org/stable/c/424858f9a048057bb8f834bfe03d18f5e477e747nvdPatch
- git.kernel.org/stable/c/60dab3e2931f3d792438a77a6cb0cb731c43300bnvdPatch
- git.kernel.org/stable/c/6175d09c23bec4b60860ee9a0170308ff4b56e10nvdPatch
- git.kernel.org/stable/c/984a415f019536ea2d24de9010744e5302a9a948nvdPatch
- git.kernel.org/stable/c/a954061b334ec67c79ae9d0cadd83fa521396487nvdPatch
- git.kernel.org/stable/c/e73cd5aed6b15e55c1c47577bdb473b5e88d6a69nvdPatch
- git.kernel.org/stable/c/f1af27cec07a9fd0847166bdb23c99e86b05bfdcnvdPatch
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