RHSA-2021:4513MediumCVSS 3.3

Red Hat Security Advisory: libsepol security update

Published
November 9, 2021
Last Modified
November 6, 2026

🔗 CVE IDs covered (4)

CVE-2021-36084 →CVE-2021-36085 →CVE-2021-36086 →CVE-2021-36087 →

📋 Description

CVE-2021-36084 — libsepol: use-after-free in __cil_verify_classperms() CVE-2021-36085 — libsepol: use-after-free in __cil_verify_classperms() CVE-2021-36086 — libsepol: use-after-free in cil_reset_classpermission() CVE-2021-36087 — libsepol: heap-based buffer overflow in ebitmap_match_any()

🎯 Affected products38

  • Red Hat CodeReady Linux Builder (v. 8)
  • Red Hat Enterprise Linux BaseOS (v. 8)
  • libsepol-0:2.9-3.el8.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • libsepol-0:2.9-3.el8.i686 as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • libsepol-0:2.9-3.el8.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • libsepol-0:2.9-3.el8.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • libsepol-0:2.9-3.el8.src as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • libsepol-0:2.9-3.el8.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • libsepol-debuginfo-0:2.9-3.el8.aarch64 as a component of Red Hat CodeReady Linux Builder (v. 8)
  • libsepol-debuginfo-0:2.9-3.el8.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • libsepol-debuginfo-0:2.9-3.el8.i686 as a component of Red Hat CodeReady Linux Builder (v. 8)
  • libsepol-debuginfo-0:2.9-3.el8.i686 as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • libsepol-debuginfo-0:2.9-3.el8.ppc64le as a component of Red Hat CodeReady Linux Builder (v. 8)
  • libsepol-debuginfo-0:2.9-3.el8.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • libsepol-debuginfo-0:2.9-3.el8.s390x as a component of Red Hat CodeReady Linux Builder (v. 8)
  • libsepol-debuginfo-0:2.9-3.el8.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • libsepol-debuginfo-0:2.9-3.el8.x86_64 as a component of Red Hat CodeReady Linux Builder (v. 8)
  • libsepol-debuginfo-0:2.9-3.el8.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • libsepol-debugsource-0:2.9-3.el8.aarch64 as a component of Red Hat CodeReady Linux Builder (v. 8)
  • libsepol-debugsource-0:2.9-3.el8.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • libsepol-debugsource-0:2.9-3.el8.i686 as a component of Red Hat CodeReady Linux Builder (v. 8)
  • libsepol-debugsource-0:2.9-3.el8.i686 as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • libsepol-debugsource-0:2.9-3.el8.ppc64le as a component of Red Hat CodeReady Linux Builder (v. 8)
  • libsepol-debugsource-0:2.9-3.el8.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • libsepol-debugsource-0:2.9-3.el8.s390x as a component of Red Hat CodeReady Linux Builder (v. 8)
  • libsepol-debugsource-0:2.9-3.el8.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • libsepol-debugsource-0:2.9-3.el8.x86_64 as a component of Red Hat CodeReady Linux Builder (v. 8)
  • libsepol-debugsource-0:2.9-3.el8.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • libsepol-devel-0:2.9-3.el8.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • libsepol-devel-0:2.9-3.el8.i686 as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • +8 more not shown

✅ Remediation

For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258

🔗 References (8)