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=====================================================================
                   Red Hat Security Advisory

Synopsis:          Moderate: lz4 security update
Advisory ID:       RHSA-2021:2575-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2021:2575
Issue date:        2021-06-29
CVE Names:         CVE-2021-3520 
=====================================================================

1. Summary:

An update for lz4 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.

2. Relevant releases/architectures:

Red Hat Enterprise Linux BaseOS (v. 8) - aarch64, ppc64le, s390x, x86_64

3. Description:

The lz4 packages provide support for LZ4, a very fast, lossless compression
algorithm that provides compression speeds of 400 MB/s per core and scales
with multicore CPUs. It also features an extremely fast decoder that
reaches speeds of multiple GB/s per core and typically reaches RAM speed
limits on multicore systems.

Security Fix(es):

* lz4: memory corruption due to an integer overflow bug caused by memmove
argument (CVE-2021-3520)

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.

4. 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

5. Bugs fixed (https://bugzilla.redhat.com/):

1954559 - CVE-2021-3520 lz4: memory corruption due to an integer overflow bug
 caused by memmove argument

6. Package List:

Red Hat Enterprise Linux BaseOS (v. 8):

Source:
lz4-1.8.3-3.el8_4.src.rpm

aarch64:
lz4-1.8.3-3.el8_4.aarch64.rpm
lz4-debuginfo-1.8.3-3.el8_4.aarch64.rpm
lz4-debugsource-1.8.3-3.el8_4.aarch64.rpm
lz4-devel-1.8.3-3.el8_4.aarch64.rpm
lz4-libs-1.8.3-3.el8_4.aarch64.rpm
lz4-libs-debuginfo-1.8.3-3.el8_4.aarch64.rpm

ppc64le:
lz4-1.8.3-3.el8_4.ppc64le.rpm
lz4-debuginfo-1.8.3-3.el8_4.ppc64le.rpm
lz4-debugsource-1.8.3-3.el8_4.ppc64le.rpm
lz4-devel-1.8.3-3.el8_4.ppc64le.rpm
lz4-libs-1.8.3-3.el8_4.ppc64le.rpm
lz4-libs-debuginfo-1.8.3-3.el8_4.ppc64le.rpm

s390x:
lz4-1.8.3-3.el8_4.s390x.rpm
lz4-debuginfo-1.8.3-3.el8_4.s390x.rpm
lz4-debugsource-1.8.3-3.el8_4.s390x.rpm
lz4-devel-1.8.3-3.el8_4.s390x.rpm
lz4-libs-1.8.3-3.el8_4.s390x.rpm
lz4-libs-debuginfo-1.8.3-3.el8_4.s390x.rpm

x86_64:
lz4-1.8.3-3.el8_4.x86_64.rpm
lz4-debuginfo-1.8.3-3.el8_4.i686.rpm
lz4-debuginfo-1.8.3-3.el8_4.x86_64.rpm
lz4-debugsource-1.8.3-3.el8_4.i686.rpm
lz4-debugsource-1.8.3-3.el8_4.x86_64.rpm
lz4-devel-1.8.3-3.el8_4.i686.rpm
lz4-devel-1.8.3-3.el8_4.x86_64.rpm
lz4-libs-1.8.3-3.el8_4.i686.rpm
lz4-libs-1.8.3-3.el8_4.x86_64.rpm
lz4-libs-debuginfo-1.8.3-3.el8_4.i686.rpm
lz4-libs-debuginfo-1.8.3-3.el8_4.x86_64.rpm

These packages are GPG signed by Red Hat for security.  Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/

7. References:

https://access.redhat.com/security/cve/CVE-2021-3520
https://access.redhat.com/security/updates/classification/#moderate

8. Contact:

The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2021 Red Hat, Inc.
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