5.5 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
0.0004 Low
EPSS
Percentile
14.2%
Qemu before 2.0 block driver for Hyper-V VHDX Images is vulnerable to
infinite loops and other potential issues when calculating BAT entries, due
to missing bounds checks for block_size and logical_sector_size variables.
These are used to derive other fields like ‘sectors_per_block’ etc. A user
able to alter the Qemu disk image could ise this flaw to crash the Qemu
instance resulting in DoS.