CVE-2021-33639: High severity openeuler kernel vulnerability
Published Mar 8, 2023
·Updated
REMAP cmd of SVM driver can be used to remap read only memory as read-write, then cause read only memory/file modified.
Affected Software
2 affected components
Openatom Openeuler Kernel<=4.19.90-2211.4.0.0177
Openatom Openeuler Kernel>=5.0<=5.10.0-60.67.0.92
Event History
Mar 8, 2023
CVE Published
via MITRE·12:00 AM
Data Sourced
via MITRE·12:00 AM
DescriptionWeakness
Frequently Asked Questions
1
What is the severity of CVE-2021-33639?
The severity of CVE-2021-33639 is classified as high due to its potential to allow modification of read-only memory.
2
How do I fix CVE-2021-33639?
To fix CVE-2021-33639, update the OpenEuler kernel to a version that addresses the vulnerability.
3
Which versions of OpenEuler kernel are affected by CVE-2021-33639?
CVE-2021-33639 affects OpenEuler kernel versions up to 4.19.90-2211.4.0.0177 and between 5.0 and 5.10.0-60.67.0.92.
4
What could happen if CVE-2021-33639 is exploited?
Exploitation of CVE-2021-33639 could lead to unintended modifications of memory or files that are otherwise read-only.
5
Is there a workaround for CVE-2021-33639?
Currently, the recommended action for CVE-2021-33639 is to upgrade to a secure version of the OpenEuler kernel.