Issued:
2026-04-20
Updated:
2026-04-20

RHSA-2026:8866 - Important: libarchive security update

Synopsis

Important: libarchive security update

Type/Severity

Security Advisory Important

Topic

An update for libarchive is now available for Red Hat Enterprise Linux 9.6 Extended Update Support.

Red Hat Product Security has rated this update as having a security impact of Important. 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 libarchive programming library can create and read several different streaming archive formats, including GNU tar, cpio, and ISO 9660 CD-ROM images. Libarchive is used notably in the bsdtar utility, scripting language bindings such as python-libarchive, and several popular desktop file managers.

Security Fix(es):

  • libarchive: libarchive: Information disclosure via heap out-of-bounds read in RAR archive processing (CVE-2026-4424)

  • libarchive: libarchive: Arbitrary code execution via integer overflow in ISO9660 image processing (CVE-2026-5121)

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.

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_64 - Update Services for SAP Solutions9.6x86_64
Red Hat Enterprise Linux for x86_64 - Extended Update Support9.6x86_64
Red Hat Enterprise Linux for x86_64 - Extended Life Cycle9.6x86_64
Red Hat Enterprise Linux for Power, little endian - Extended Update Support9.6ppc64le
Red Hat Enterprise Linux for Power, little endian - Extended Life Cycle9.6ppc64le
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support9.6s390x
Red Hat Enterprise Linux for IBM z Systems - Extended Life Cycle9.6s390x
Red Hat Enterprise Linux for IBM z Systems - 4 years of updates9.6s390x
Red Hat Enterprise Linux for ARM 64 - Extended Update Support9.6aarch64
Red Hat Enterprise Linux for ARM 64 - Extended Life Cycle9.6aarch64
Red Hat Enterprise Linux for ARM 64 - 4 years of updates9.6aarch64
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions9.6ppc64le
Red Hat Enterprise Linux Server - AUS9.6x86_64

Updated Packages

  • libarchive-3.5.3-7.el9_6.1.i686.rpm
  • libarchive-3.5.3-7.el9_6.1.src.rpm
  • bsdcpio-debuginfo-3.5.3-7.el9_6.1.aarch64.rpm
  • bsdcpio-debuginfo-3.5.3-7.el9_6.1.ppc64le.rpm
  • libarchive-3.5.3-7.el9_6.1.ppc64le.rpm
  • libarchive-3.5.3-7.el9_6.1.s390x.rpm
  • libarchive-debuginfo-3.5.3-7.el9_6.1.s390x.rpm
  • libarchive-3.5.3-7.el9_6.1.aarch64.rpm
  • libarchive-debuginfo-3.5.3-7.el9_6.1.ppc64le.rpm
  • bsdtar-3.5.3-7.el9_6.1.x86_64.rpm
  • bsdtar-debuginfo-3.5.3-7.el9_6.1.x86_64.rpm
  • libarchive-debuginfo-3.5.3-7.el9_6.1.x86_64.rpm
  • libarchive-3.5.3-7.el9_6.1.x86_64.rpm
  • libarchive-debugsource-3.5.3-7.el9_6.1.x86_64.rpm
  • libarchive-devel-3.5.3-7.el9_6.1.i686.rpm
  • libarchive-debuginfo-3.5.3-7.el9_6.1.i686.rpm
  • bsdtar-debuginfo-3.5.3-7.el9_6.1.ppc64le.rpm
  • bsdcpio-debuginfo-3.5.3-7.el9_6.1.x86_64.rpm
  • bsdcat-debuginfo-3.5.3-7.el9_6.1.ppc64le.rpm
  • bsdtar-debuginfo-3.5.3-7.el9_6.1.i686.rpm
  • libarchive-debugsource-3.5.3-7.el9_6.1.i686.rpm
  • libarchive-debugsource-3.5.3-7.el9_6.1.s390x.rpm
  • libarchive-devel-3.5.3-7.el9_6.1.ppc64le.rpm
  • bsdcpio-debuginfo-3.5.3-7.el9_6.1.i686.rpm
  • libarchive-debuginfo-3.5.3-7.el9_6.1.aarch64.rpm
  • libarchive-devel-3.5.3-7.el9_6.1.s390x.rpm
  • bsdtar-3.5.3-7.el9_6.1.s390x.rpm
  • libarchive-devel-3.5.3-7.el9_6.1.aarch64.rpm
  • bsdcat-debuginfo-3.5.3-7.el9_6.1.x86_64.rpm
  • bsdcat-debuginfo-3.5.3-7.el9_6.1.aarch64.rpm
  • bsdcat-debuginfo-3.5.3-7.el9_6.1.s390x.rpm
  • bsdtar-3.5.3-7.el9_6.1.ppc64le.rpm
  • bsdcat-debuginfo-3.5.3-7.el9_6.1.i686.rpm
  • libarchive-debugsource-3.5.3-7.el9_6.1.aarch64.rpm
  • bsdtar-debuginfo-3.5.3-7.el9_6.1.s390x.rpm
  • bsdcpio-debuginfo-3.5.3-7.el9_6.1.s390x.rpm
  • libarchive-debugsource-3.5.3-7.el9_6.1.ppc64le.rpm
  • libarchive-devel-3.5.3-7.el9_6.1.x86_64.rpm
  • bsdtar-debuginfo-3.5.3-7.el9_6.1.aarch64.rpm
  • bsdtar-3.5.3-7.el9_6.1.aarch64.rpm

Fixes

CVEs

References

Additional information