PT-2021-7381 · Linux+5 · Linux Kernel+5
Iwona Winiarska
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Published
2021-08-17
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Updated
2023-08-14
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CVE-2021-42252
CVSS v3.1
7.8
High
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel versions prior to 5.14.6
Description
An issue was discovered in the
aspeed lpc ctrl mmap function in the Linux kernel, which could allow local attackers to overwrite memory in the kernel and potentially execute privileges. This occurs because a certain comparison uses values that are not memory sizes, leading to a buffer overflow in memory. The exploitation of this issue could allow an attacker to access confidential data, compromise data integrity, and cause a denial of service.Recommendations
For Linux kernel versions prior to 5.14.6, update to version 5.14.6 or later to resolve the issue. As a temporary workaround, consider restricting access to the Aspeed LPC control interface to minimize the risk of exploitation.
Fix
Buffer Overflow
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Weakness Enumeration
Related Identifiers
Affected Products
Alt Linux
Astra Linux
Linuxmint
Linux Kernel
Suse
Ubuntu