Issued:
2021-11-09
Updated:
2021-11-09

RHSA-2021:4513 - Moderate: libsepol security update

Synopsis

Moderate: libsepol security update

Type/Severity

Security Advisory Moderate

Topic

An update for libsepol is now available for Red Hat Enterprise Linux 8.

Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

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 __cil_verify_classperms() (CVE-2021-36084)

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

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

  • libsepol: heap-based buffer overflow in ebitmap_match_any() (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 Red Hat Enterprise Linux 8.5 Release Notes linked from the References section.

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

Affected Products

ProductVersionArch
Red Hat Enterprise Linux for x86_648x86_64
Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions8.8x86_64
Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions8.6x86_64
Red Hat Enterprise Linux for x86_64 - Extended Update Support8.8x86_64
Red Hat Enterprise Linux for x86_64 - Extended Update Support8.6x86_64
Red Hat Enterprise Linux for x86_64 - Extended Update Support Extension8.8x86_64
Red Hat Enterprise Linux for x86_64 - Extended Update Support Extension8.6x86_64
Red Hat Enterprise Linux for x86_64 - Extended Life Cycle8.10x86_64
Red Hat Enterprise Linux for Power, little endian8ppc64le
Red Hat Enterprise Linux for Power, little endian - Extended Update Support8.8ppc64le
Red Hat Enterprise Linux for Power, little endian - Extended Update Support8.6ppc64le
Red Hat Enterprise Linux for Power, little endian - Extended Life Cycle8.10ppc64le
Red Hat Enterprise Linux for IBM z Systems8s390x
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support8.8s390x
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support8.6s390x
Red Hat Enterprise Linux for IBM z Systems - Extended Life Cycle8.10s390x
Red Hat Enterprise Linux for ARM 648aarch64
Red Hat Enterprise Linux for ARM 64 - Extended Update Support8.8aarch64
Red Hat Enterprise Linux for ARM 64 - Extended Update Support8.6aarch64
Red Hat Enterprise Linux for ARM 64 - Extended Life Cycle8.10aarch64
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions8.8ppc64le
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions8.6ppc64le
Red Hat Enterprise Linux Server - TUS8.8x86_64
Red Hat Enterprise Linux Server - TUS8.6x86_64
Red Hat Enterprise Linux Server - AUS8.6x86_64
Red Hat CodeReady Linux Builder for x86_648x86_64
Red Hat CodeReady Linux Builder for x86_64 - Extended Update Support8.8x86_64
Red Hat CodeReady Linux Builder for x86_64 - Extended Update Support8.6x86_64
Red Hat CodeReady Linux Builder for Power, little endian8ppc64le
Red Hat CodeReady Linux Builder for Power, little endian - Extended Update Support8.8ppc64le
Red Hat CodeReady Linux Builder for Power, little endian - Extended Update Support8.6ppc64le
Red Hat CodeReady Linux Builder for IBM z Systems8s390x
Red Hat CodeReady Linux Builder for IBM z Systems - Extended Update Support8.8s390x
Red Hat CodeReady Linux Builder for IBM z Systems - Extended Update Support8.6s390x
Red Hat CodeReady Linux Builder for ARM 648aarch64
Red Hat CodeReady Linux Builder for ARM 64 - Extended Update Support8.8aarch64
Red Hat CodeReady Linux Builder for ARM 64 - Extended Update Support8.6aarch64

Updated Packages

  • libsepol-debugsource-2.9-3.el8.aarch64.rpm
  • libsepol-2.9-3.el8.x86_64.rpm
  • libsepol-debuginfo-2.9-3.el8.ppc64le.rpm
  • libsepol-2.9-3.el8.s390x.rpm
  • libsepol-2.9-3.el8.ppc64le.rpm
  • libsepol-debuginfo-2.9-3.el8.x86_64.rpm
  • libsepol-devel-2.9-3.el8.s390x.rpm
  • libsepol-devel-2.9-3.el8.aarch64.rpm
  • libsepol-static-2.9-3.el8.s390x.rpm
  • libsepol-devel-2.9-3.el8.i686.rpm
  • libsepol-devel-2.9-3.el8.x86_64.rpm
  • libsepol-debugsource-2.9-3.el8.s390x.rpm
  • libsepol-debuginfo-2.9-3.el8.aarch64.rpm
  • libsepol-static-2.9-3.el8.ppc64le.rpm
  • libsepol-2.9-3.el8.aarch64.rpm
  • libsepol-debuginfo-2.9-3.el8.s390x.rpm
  • libsepol-static-2.9-3.el8.x86_64.rpm
  • libsepol-debugsource-2.9-3.el8.x86_64.rpm
  • libsepol-2.9-3.el8.i686.rpm
  • libsepol-static-2.9-3.el8.aarch64.rpm
  • libsepol-static-2.9-3.el8.i686.rpm
  • libsepol-2.9-3.el8.src.rpm
  • libsepol-debugsource-2.9-3.el8.i686.rpm
  • libsepol-devel-2.9-3.el8.ppc64le.rpm
  • libsepol-debugsource-2.9-3.el8.ppc64le.rpm
  • libsepol-debuginfo-2.9-3.el8.i686.rpm

Fixes

CVEs

References

Additional information