Bug 2533954 (CVE-2026-91950) - CVE-2026-91950 FreeRDP: FreeRDP: Out-of-bounds read leads to denial of service or information disclosure
Summary: CVE-2026-91950 FreeRDP: FreeRDP: Out-of-bounds read leads to denial of servic...
Keywords:
Status: NEW
Alias: CVE-2026-91950
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2534068 2534069
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-15 15:52 UTC by OSIDB Bzimport
Modified: 2026-11-12 06:31 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-2026:75570 0 None None None 2026-10-05 04:23:40 UTC
Red Hat Product Errata RHSA-2026:98598 0 None None None 2026-11-11 11:28:06 UTC
Red Hat Product Errata RHSA-2026:99516 0 None None None 2026-11-12 06:31:06 UTC

Description OSIDB Bzimport 2026-09-15 15:52:12 UTC
FreeRDP before 3.31.0 contains an out-of-bounds read vulnerability in the rdpdr_dump_packet function due to 32-bit unsigned integer wraparound in buffer bounds validation. A malicious RDP server can send a crafted RDPDR packet with computerNameLen set to 0xFFFFFFF0 to bypass bounds checks and trigger memory reads past the packet buffer, causing client crashes or heap disclosure in logs.

Comment 1 Jon Orris 2026-10-05 04:23:39 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:75570 https://access.redhat.com/errata/RHSA-2026:75570

Comment 3 errata-xmlrpc 2026-11-11 11:28:05 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:98598 https://access.redhat.com/errata/RHSA-2026:98598

Comment 4 errata-xmlrpc 2026-11-12 06:31:05 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10.0 Extended Update Support

Via RHSA-2026:99516 https://access.redhat.com/errata/RHSA-2026:99516


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