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.
Platform | Package | Release Date | Advisory |
---|---|---|---|
Amazon Linux 2 - Core | edk2 | 2019-08-23 03:26 | ALAS2-2019-1273 |
Score Type | Score | Vector | |
---|---|---|---|
Amazon Linux | CVSSv3 | 8.3 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L |
NVD | CVSSv2 | 6.8 | AV:N/AC:M/Au:N/C:P/I:P/A:P |
NVD | CVSSv3 | 8.8 | CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |