CVE-2026-46062

Summary

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).

Affected Software

VendorProductVersion RangeStatus
LinuxLinux82cae269cfa953032fbb8980a7d554d60fb00b17 < 424858f9a048057bb8f834bfe03d18f5e477e747affected
LinuxLinux82cae269cfa953032fbb8980a7d554d60fb00b17 < e73cd5aed6b15e55c1c47577bdb473b5e88d6a69affected
LinuxLinux82cae269cfa953032fbb8980a7d554d60fb00b17 < a954061b334ec67c79ae9d0cadd83fa521396487affected
LinuxLinux82cae269cfa953032fbb8980a7d554d60fb00b17 < 60dab3e2931f3d792438a77a6cb0cb731c43300baffected
LinuxLinux82cae269cfa953032fbb8980a7d554d60fb00b17 < f1af27cec07a9fd0847166bdb23c99e86b05bfdcaffected
LinuxLinux82cae269cfa953032fbb8980a7d554d60fb00b17 < 6175d09c23bec4b60860ee9a0170308ff4b56e10affected
LinuxLinux82cae269cfa953032fbb8980a7d554d60fb00b17 < 984a415f019536ea2d24de9010744e5302a9a948affected
LinuxLinux5.15affected
LinuxLinux0 < 5.15unaffected
LinuxLinux5.15.209 <= 5.15.*unaffected
LinuxLinux6.1.175 <= 6.1.*unaffected
LinuxLinux6.6.140 <= 6.6.*unaffected
LinuxLinux6.12.86 <= 6.12.*unaffected
LinuxLinux6.18.27 <= 6.18.*unaffected
LinuxLinux7.0.4 <= 7.0.*unaffected
LinuxLinux7.1 <= *unaffected

Weaknesses

References