PT-2020-2224 · Linux+2 · Linux Kernel+2
Tom Hatskevich
·
Published
2020-01-15
·
Updated
2021-05-28
·
CVE-2020-12652
CVSS v2.0
6.0
Medium
| Vector | AV:L/AC:H/Au:S/C:C/I:C/A:C |
Name of the Vulnerable Software and Affected Versions
Linux kernel versions prior to 5.4.14
Description
The issue is related to the
mptctl ioctl function in drivers/message/fusion/mptctl.c and involves synchronization errors when using a shared resource. This can lead to a race condition, specifically a "double fetch" vulnerability, allowing an attacker to impact the confidentiality, integrity, and availability of protected information. The vendor notes that the security impact is limited because the affected operations are privileged and the root user already has significant destructive power.Recommendations
For Linux kernel versions prior to 5.4.14, update to version 5.4.14 or later to resolve the issue. As a temporary workaround, consider restricting access to the
mptctl ioctl function to minimize the risk of exploitation.Fix
Race Condition
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Weakness Enumeration
Related Identifiers
Affected Products
Alt Linux
Linux Kernel
Suse