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CVE-2021-42252

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Date: October 11, 2021

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.

Language: C

Severity Score

Related Resources (7)

https://people.canonical.com/~ubuntu-security/cve/CVE-2021-42252
https://security.netapp.com/advisory/ntap-20211112-0006/
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.14.6
https://nvd.nist.gov/vuln/detail/CVE-2021-42252
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b49a0e69a7b1a68c8d3f64097d06dabb770fec96
https://security-tracker.debian.org/tracker/CVE-2021-42252
https://www.mend.io/vulnerability-database/CVE-2021-42252

Severity Score

Weakness Type (CWE)

Insufficient Information

NVD-CWE-noinfo

Top Fix

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CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): LOCAL
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): PARTIAL
Availability (A): PARTIAL
Additional information:

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