ntfs3: fix integer overflow in run_unpack() volume boundary check
At a glance
Severity
HIGH 7.8
EPSS
EPSS 0.14 % · percentile 3 (2026-10-27)
State
PUBLISHED
Published
Updated
Assigner
Linux
NVD status
Analyzed
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).
