ALSA-2021:4513

The libsepol library provides an API for the manipulation of SELinux binary policies. It is used by checkpolicy (the policy compiler) and similar tools, as well as by programs like load_policy that need to perform specific transformations on binary policies (for example, customizing policy boolean settings).

Security Fix(es):

• libsepol: use-after-free in _cilverify_classperms() (CVE-2021-36084)

• libsepol: use-after-free in _cilverify_classperms() (CVE-2021-36085)

• libsepol: use-after-free in cilresetclasspermission() (CVE-2021-36086)

• libsepol: heap-based buffer overflow in ebitmapmatchany() (CVE-2021-36087)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section.