RHSA-2026:96239 - Security Advisory

Topic

An update for tesseract 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

A commercial quality OCR engine originally developed at HP between 1985 and 1995. In 1995, this engine was among the top 3 evaluated by UNLV. It was open-sourced by HP and UNLV in 2005.

Security Fix(es):

• tesseract: Tesseract: Heap out-of-bounds write/read leading to information disclosure via crafted data (CVE-2026-88048)
• tesseract: Tesseract: Stack buffer overflow via crafted .traineddata file (CVE-2026-88047)
• tesseract: Tesseract: Heap out-of-bounds write allows arbitrary code execution or denial of service (CVE-2026-88049)
• tesseract: Tesseract: Heap out-of-bounds write via crafted .traineddata model (CVE-2026-88051)
• tesseract: Tesseract: Heap out-of-bounds write leads to heap corruption via crafted data file (CVE-2026-88053)
• tesseract: Tesseract: Heap out-of-bounds write can lead to arbitrary code execution (CVE-2026-88052)

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 - 2531546 - CVE-2026-88048 tesseract: Tesseract: Heap out-of-bounds write/read leading to information disclosure via crafted data
• BZ - 2531550 - CVE-2026-88047 tesseract: Tesseract: Stack buffer overflow via crafted .traineddata file
• BZ - 2531554 - CVE-2026-88049 tesseract: Tesseract: Heap out-of-bounds write allows arbitrary code execution or denial of service
• BZ - 2531566 - CVE-2026-88051 tesseract: Tesseract: Heap out-of-bounds write via crafted .traineddata model
• BZ - 2531573 - CVE-2026-88053 tesseract: Tesseract: Heap out-of-bounds write leads to heap corruption via crafted data file
• BZ - 2531579 - CVE-2026-88052 tesseract: Tesseract: Heap out-of-bounds write can lead to arbitrary code execution

CVEs

• CVE-2026-88047
• CVE-2026-88048
• CVE-2026-88049
• CVE-2026-88051
• CVE-2026-88052
• CVE-2026-88053

References

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