cbcvebase.
CVE-2025-40068
published 2025-10-28

CVE-2025-40068: In the Linux kernel, the following vulnerability has been resolved: fs: ntfs3: Fix integer overflow in run_unpack() The MFT record relative to the file being…

PriorityP345high8.4CVSS 3.1
AVLACLPRNUINSUCHIHAH
EPSS
0.17%
6.6th percentile
In the Linux kernel, the following vulnerability has been resolved: fs: ntfs3: Fix integer overflow in run_unpack() The MFT record relative to the file being opened contains its runlist, an array containing information about the file's location on the physical disk. Analysis of all Call Stack paths showed that the values of the runlist array, from which LCNs are calculated, are not validated before run_unpack function. The run_unpack function decodes the compressed runlist data format from MFT attributes (for example, $DATA), converting them into a runs_tree structure, which describes the mapping of virtual clusters (VCN) to logical clusters (LCN). The NTFS3 subsystem also has a shortcut for deleting files from MFT records - in this case, the RUN_DEALLOCATE command is sent to the run_unpack input, and the function logic provides that all data transferred to the runlist about file or directory is deleted without creating a runs_tree structure. Substituting the runlist in the $DATA attribute of the MFT record for an arbitrary file can lead either to access to arbitrary data on the disk bypassing access checks to them (since the inode access check occurs above) or to destruction of arbitrary data on the disk. Add overflow check for addition operation. Found by Linux Verification Center (linuxtesting.org) with SVACE.

Affected

27 ranges· showing 25
VendorProductVersion rangeFixed in
debianlinux< linux 6.1.158-1 (bookworm)linux 6.1.158-1 (bookworm)
debianlinux-6.1< linux 6.1.158-1 (bookworm)linux 6.1.158-1 (bookworm)
linuxlinux
linuxlinux>= 4342306f0f0d5ff4315a204d315c1b51b914fca5 < f6b36cfd25cbadad63447c673743cf771090e756f6b36cfd25cbadad63447c673743cf771090e756
linuxlinux>= 4342306f0f0d5ff4315a204d315c1b51b914fca5 < 3ac37e100385b59ac821a62118494442238aaac43ac37e100385b59ac821a62118494442238aaac4
linuxlinux>= 4342306f0f0d5ff4315a204d315c1b51b914fca5 < a86c8b9d03f7101e1750233846fe989df6f0d631a86c8b9d03f7101e1750233846fe989df6f0d631
linuxlinux>= 4342306f0f0d5ff4315a204d315c1b51b914fca5 < 9378cfe228c2c679564a4116bcb28c8e89dff9899378cfe228c2c679564a4116bcb28c8e89dff989
linuxlinux>= 4342306f0f0d5ff4315a204d315c1b51b914fca5 < 5aa5799d162ad1b8e8b699d48b6218143c695a785aa5799d162ad1b8e8b699d48b6218143c695a78
linuxlinux>= 4342306f0f0d5ff4315a204d315c1b51b914fca5 < 736fc7bf5f68f6b74a0925b7e072c571838657d2736fc7bf5f68f6b74a0925b7e072c571838657d2
linuxlinux_kernel>= 0 < 6.1.158-16.1.158-1
linuxlinux_kernel>= 0 < 6.12.57-16.12.57-1
linuxlinux_kernel>= 0 < 6.17.6-16.17.6-1
linuxlinux_kernel>= 0 < 5.15.0-170.1805.15.0-170.180
linuxlinux_kernel>= 0 < 6.8.0-106.1066.8.0-106.106
linuxlinux_kernel>= 0 < 6.17.0-14.146.17.0-14.14
linuxlinux_kernel>= 5.15.0 < 5.15.1955.15.195
linuxlinux_kernel>= 5.16.0 < 6.1.1566.1.156
linuxlinux_kernel>= 6.13.0 < 6.17.36.17.3
linuxlinux_kernel>= 6.2.0 < 6.6.1126.6.112
linuxlinux_kernel>= 6.7.0 < 6.12.536.12.53
msrcazl3_kernel_6.6.104.2-4_on_azure_linux_3.0
ubuntulinux-aws
ubuntulinux-azure-5.15
ubuntulinux-intel-iotg-5.15
ubuntulinux-oracle

CVSS provenance

nvdv3.18.4HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
osv7.8HIGH
vendor_msrc7.8HIGH
vendor_ubuntu7.8HIGH
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