RHSA-2026:48760 - Security Advisory

Topic

An update for python-pillow is now available for Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support and Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On.

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

Python is an interpreted, interactive, object-oriented programming language, which includes modules, classes, exceptions, very high level dynamic data types and dynamic typing. Python supports interfaces to many system calls and libraries, as well as to various windowing systems.

Security Fix(es):

• python-pillow: Pillow: Denial of Service via crafted BDF font file (CVE-2026-55379)
• python-pillow: Pillow: Denial of Service via crafted GD 2.x image file (CVE-2026-55380)
• python-pillow: Pillow: Denial of Service via crafted PCF font data (CVE-2026-54059)
• python-pillow: Pillow: Denial of Service via excessive memory allocation when processing font files (CVE-2026-54060)

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

• Red Hat Enterprise Linux for x86_64 - Extended Life Cycle Long Life 8.6 x86_64
• Red Hat Enterprise Linux Server - AUS 8.6 x86_64

Fixes

• BZ - 2497452 - CVE-2026-55379 python-pillow: Pillow: Denial of Service via crafted BDF font file
• BZ - 2497455 - CVE-2026-55380 python-pillow: Pillow: Denial of Service via crafted GD 2.x image file
• BZ - 2497464 - CVE-2026-54059 python-pillow: Pillow: Denial of Service via crafted PCF font data
• BZ - 2497466 - CVE-2026-54060 python-pillow: Pillow: Denial of Service via excessive memory allocation when processing font files

CVEs

• CVE-2026-54059
• CVE-2026-54060
• CVE-2026-55379
• CVE-2026-55380

References

• https://access.redhat.com/security/updates/classification/#important