CVE-2026-46062
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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.14%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 0.14% probability · 4th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-190
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
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
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.