CVE-2021-42252
kernel: memory overwrite in the kernel with potential privileges execution
Severity
ImportantRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · October 11, 2021
Updated · August 6, 2026
Description
A vulnerability was found in aspeed_lpc_ctrl_mmap in drivers/soc/aspeed/aspeed-lpc-ctrl.c in Aspeed Low Pin Count (LPC) Bus Controller in the Linux kernel. A miss in the sanity check may allow a malicious local normal privileged user to bypass the boundary check, and map pages that are located outside the memory region reserved by the driver.
Statement
There was no shipped kernel version that was seen affected by this problem. These files are not built in our source code.
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 3.1 · 7.8CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
CWE-119 · Improper Restriction of Operations within the Bounds of a Memory Buffer