CVE-2021-42252

Description

An issue was discovered in aspeed_lpc_ctrl_mmap in drivers/soc/aspeed/aspeed-lpc-ctrl.c in the Linux kernel before 5.14.6. Local attackers able to access the Aspeed LPC control interface could overwrite memory in the kernel and potentially execute privileges, aka CID-b49a0e69a7b1. This occurs because a certain comparison uses values that are not memory sizes.

7.8

CVSS

Severity: High

CVSS 3.1 •

CVSS 2.0 •

EPSS 0.05%

Vendor Advisory kernel.org Vendor Advisory kernel.org

Affected: n/a n/a

References

Link	Tags
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b49a0e69a7b1a68c8d3f64097d06dabb770fec96	patch vendor advisory
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.14.6	release notes vendor advisory
https://security.netapp.com/advisory/ntap-20211112-0006/	third party advisory

Frequently Asked Questions

What is the severity of CVE-2021-42252?: CVE-2021-42252 has been scored as a high severity vulnerability.
How to fix CVE-2021-42252?: To fix CVE-2021-42252, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-42252 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2021-42252 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.

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