CVE-2018-12180
edk2: Buffer Overflow in BlockIo service for RAM disk
Severity
ImportantRed Hat Product Security
CVSS 3.0
Review impact separately from score.
Published · February 26, 2019
Updated · June 28, 2026
Description
A flaw was found in edk2. When registering a RAM disk whose size is not a multiple of 512 bytes, the BlockIo protocol produced by the RamDiskDxe driver will incur memory read/write overrun. The memory overrun will happen when reading/writing the last block on the RAM disk. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.0 · 8.3CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L
CWE-805 · Buffer Access with Incorrect Length Value