Bug 2531550 (CVE-2026-88047) - CVE-2026-88047 tesseract: Tesseract: Stack buffer overflow via crafted .traineddata file
Summary: CVE-2026-88047 tesseract: Tesseract: Stack buffer overflow via crafted .train...
Keywords:
Status: NEW
Alias: CVE-2026-88047
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2531773
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-10 16:33 UTC by OSIDB Bzimport
Modified: 2026-11-11 12:06 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2026:95085 0 None None None 2026-11-04 11:44:24 UTC
Red Hat Product Errata RHSA-2026:95086 0 None None None 2026-11-04 13:04:18 UTC
Red Hat Product Errata RHSA-2026:95725 0 None None None 2026-11-05 23:24:39 UTC
Red Hat Product Errata RHSA-2026:96238 0 None None None 2026-11-09 11:53:01 UTC
Red Hat Product Errata RHSA-2026:96239 0 None None None 2026-11-09 11:41:30 UTC
Red Hat Product Errata RHSA-2026:98514 0 None None None 2026-11-11 12:06:57 UTC
Red Hat Product Errata RHSA-2026:98624 0 None None None 2026-11-11 11:41:21 UTC

Description OSIDB Bzimport 2026-09-10 16:33:08 UTC 
Tesseract is an open source OCR engine. In version 5.5.3 and earlier, Classify::ReadNormProtos in src/classify/normmatch.cpp parses the NORMPROTO component of a .traineddata file and uses std::istream::operator>>(char*) to extract a whitespace-delimited token into a fixed 61-byte stack buffer without setting a stream width. The 100-byte line buffer can carry a token of up to 99 characters, so a token longer than 60 characters writes up to 39 attacker-controlled bytes past the buffer during TessBaseAPI::Init of the legacy engine, causing stack corruption, denial of service, and potentially control-flow hijacking on affected standard-library implementations. Builds using Apple's libc++ C++20 bounded array overload are incidentally protected, while typical libstdc++ builds remain affected. No fixed release is available as of this review.
Comment 1 Jon Orris 2026-11-04 11:44:24 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:95085 https://access.redhat.com/errata/RHSA-2026:95085
Comment 2 Jon Orris 2026-11-04 13:04:17 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:95086 https://access.redhat.com/errata/RHSA-2026:95086
Comment 3 Jon Orris 2026-11-05 23:24:38 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:95725 https://access.redhat.com/errata/RHSA-2026:95725
Comment 4 errata-xmlrpc 2026-11-09 11:41:28 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
  Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On

Via RHSA-2026:96239 https://access.redhat.com/errata/RHSA-2026:96239
Comment 5 errata-xmlrpc 2026-11-09 11:52:59 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions
  Red Hat Enterprise Linux 8.8 Telecommunications Update Service

Via RHSA-2026:96238 https://access.redhat.com/errata/RHSA-2026:96238
Comment 6 errata-xmlrpc 2026-11-11 11:41:20 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:98624 https://access.redhat.com/errata/RHSA-2026:98624
Comment 7 errata-xmlrpc 2026-11-11 12:06:56 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:98514 https://access.redhat.com/errata/RHSA-2026:98514
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