CVE-2021-36084

Name of the Vulnerable Software and Affected Versions SELinux version 3.2

Description The issue is related to a use-after-free error in the cil verify classperms() function of the SELinux access control system. This error can be exploited to cause a denial of service. The cil verify classperms() function is called from cil verify classpermission and cil pre verify helper.

Recommendations For SELinux version 3.2, consider disabling the cil verify classperms() function as a temporary workaround until a patch is available. Restrict access to the affected components to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.