In the Linux kernel, the following vulnerability has been resolved:
f2fs: validate MOVE_RANGE destination size
F2FS_IOC_MOVE_RANGE checks the source range, but not the destination end
before updating i_size. A source hole can expose this: __clone_blkaddrs()
skips NULL_ADDR entries and returns success, so the caller can still extend
the destination inode with unchecked pos_out + len.
Reject destination overflow and use inode_newsize_ok() before extending
the destination inode.
Attack Parameters
Attack Vector
Local
Requires local access
Attack Complexity
Low
Easy to exploit
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
None
No data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service
CVSS Vector v3.1
Vulnerable Products 3
| Configuration | From (including) | Up to (excluding) |
|---|---|---|
|
Linux Linux_Kernel
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
|
4.8
|
6.18.53
|
|
Linux Linux_Kernel
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
|
4.8
|
7.2.5
|
|
Linux Linux_Kernel
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
|
4.8
|
7.3-rc1
|
References 4
https://git.kernel.org/stable/c/dcae1eeda53149f219dd6af93b3083b7271c1c63
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/e533889fc26aea0cd83c90327063f272061dd820
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/db13064669526494cd78ba3a4394063b740e940c
NVD
https://git.kernel.org/stable/c/bca61ee5192ea47003722486ae9588a2a4bb47b6
416baaa9-dc9f-4396-8d5f-8c081fb06d67