PT-2024-11452 · Linux+2 · Linux Kernel+2
Valentin Vidic
·
Published
2021-10-18
·
Updated
2024-06-25
·
CVE-2021-47458
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 5.11 and later, built with CONFIG FORTIFY SOURCE, are affected.
Description
The issue arises from the fact that strings for cluster stack and cluster name are not guaranteed to be null terminated in the disk representation, while the
strlcpy function assumes that the source string is always null terminated. This causes a read outside of the source string, triggering the buffer overflow detection. The problem occurs when mounting an ocfs2 filesystem with either o2cb or pcmk cluster stack.Recommendations
To resolve the issue, update the Linux kernel to a version that includes the fix for this vulnerability.
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Memory Corruption
Heap Based Buffer Overflow
Buffer Overflow
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Related Identifiers
Affected Products
Astra Linux
Linux Kernel
Suse