RHSA-2024:2973 - Security Advisory

Topic

An update for libX11 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 libX11 packages contain the core X11 protocol client library.

Security Fix(es):

• libX11: out-of-bounds memory access in _XkbReadKeySyms() (CVE-2023-43785)
• libX11: stack exhaustion from infinite recursion in PutSubImage() (CVE-2023-43786)
• libX11: integer overflow in XCreateImage() leading to a heap overflow (CVE-2023-43787)

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 8.10 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

• Red Hat Enterprise Linux for x86_64 8 x86_64
• Red Hat Enterprise Linux for IBM z Systems 8 s390x
• Red Hat Enterprise Linux for Power, little endian 8 ppc64le
• Red Hat Enterprise Linux for ARM 64 8 aarch64

Fixes

• BZ - 2242252 - CVE-2023-43785 libX11: out-of-bounds memory access in _XkbReadKeySyms()
• BZ - 2242253 - CVE-2023-43786 libX11: stack exhaustion from infinite recursion in PutSubImage()
• BZ - 2242254 - CVE-2023-43787 libX11: integer overflow in XCreateImage() leading to a heap overflow
• RHEL-23452 - [el8] Deadlock in _XReply when recursing through _XSeqSyncFunction

CVEs

• CVE-2023-43785
• CVE-2023-43786
• CVE-2023-43787

References

• https://access.redhat.com/security/updates/classification/#moderate
• https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/8.10_release_notes/index