Bug 2510010 (CVE-2026-67291) - CVE-2026-67291 FreeRDP: FreeRDP: Denial of Service via heap out-of-bounds read
Summary: CVE-2026-67291 FreeRDP: FreeRDP: Denial of Service via heap out-of-bounds read
Keywords:
Status: NEW
Alias: CVE-2026-67291
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2511522 2511523
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-08-01 13:03 UTC by OSIDB Bzimport
Modified: 2026-10-06 10:16 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-2026:61378 0 None None None 2026-08-31 12:41:29 UTC
Red Hat Product Errata RHSA-2026:61379 0 None None None 2026-08-31 12:31:48 UTC
Red Hat Product Errata RHSA-2026:62571 0 None None None 2026-09-02 11:06:46 UTC
Red Hat Product Errata RHSA-2026:65855 0 None None None 2026-09-09 08:35:25 UTC
Red Hat Product Errata RHSA-2026:66281 0 None None None 2026-09-10 01:23:42 UTC
Red Hat Product Errata RHSA-2026:66282 0 None None None 2026-09-10 01:27:19 UTC
Red Hat Product Errata RHSA-2026:68706 0 None None None 2026-09-17 17:54:44 UTC
Red Hat Product Errata RHSA-2026:68707 0 None None None 2026-09-17 18:37:56 UTC
Red Hat Product Errata RHSA-2026:71387 0 None None None 2026-09-24 08:58:55 UTC
Red Hat Product Errata RHSA-2026:71388 0 None None None 2026-09-24 06:23:10 UTC
Red Hat Product Errata RHSA-2026:71390 0 None None None 2026-09-24 06:43:09 UTC

Description OSIDB Bzimport 2026-08-01 13:03:08 UTC 
FreeRDP before 3.29.0 (affected versions <= 3.28.0) contains a heap out-of-bounds read in update_process_glyph_fragments()/glyph_cache_fragment_put() in libfreerdp/cache/glyph.c. When handling a GLYPH_FRAGMENT_ADD update, the code reads a one-byte server-controlled declared fragment size but does not verify it fits within the remaining received buffer before allocating and copying that many bytes. A malicious RDP server can send a short fragment with an oversized declared size, causing the client to read beyond the allocated buffer, resulting in an out-of-bounds read and client crash.
Comment 2 errata-xmlrpc 2026-08-31 12:31:47 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:61379 https://access.redhat.com/errata/RHSA-2026:61379
Comment 3 errata-xmlrpc 2026-08-31 12:41:29 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:61378 https://access.redhat.com/errata/RHSA-2026:61378
Comment 4 errata-xmlrpc 2026-09-02 11:06:45 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:62571 https://access.redhat.com/errata/RHSA-2026:62571
Comment 5 errata-xmlrpc 2026-09-09 08:35:24 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
  Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On

Via RHSA-2026:65855 https://access.redhat.com/errata/RHSA-2026:65855
Comment 6 errata-xmlrpc 2026-09-10 01:23:41 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-2026:66281 https://access.redhat.com/errata/RHSA-2026:66281
Comment 7 errata-xmlrpc 2026-09-10 01:27:18 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-2026:66282 https://access.redhat.com/errata/RHSA-2026:66282
Comment 9 Jon Orris 2026-09-17 17:54:43 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10.0 Extended Update Support

Via RHSA-2026:68706 https://access.redhat.com/errata/RHSA-2026:68706
Comment 10 Jon Orris 2026-09-17 18:37:55 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7 Extended Lifecycle Support

Via RHSA-2026:68707 https://access.redhat.com/errata/RHSA-2026:68707
Comment 11 Jon Orris 2026-09-24 06:23:09 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

Via RHSA-2026:71388 https://access.redhat.com/errata/RHSA-2026:71388
Comment 12 Jon Orris 2026-09-24 06:43:09 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions

Via RHSA-2026:71390 https://access.redhat.com/errata/RHSA-2026:71390
Comment 13 Jon Orris 2026-09-24 08:58:54 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.6 Extended Update Support

Via RHSA-2026:71387 https://access.redhat.com/errata/RHSA-2026:71387
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