Bug 2560923 - CVE-2026-109939 freerdp: FreeRDP 3.27.1 before 3.32.0 NULL Pointer Dereference via Cache Bitmap V3 Order [fedora-43]
Summary: CVE-2026-109939 freerdp: FreeRDP 3.27.1 before 3.32.0 NULL Pointer Dereferenc...
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Fedora
Classification: Fedora
Component: freerdp
Version: 43
Hardware: Unspecified
OS: Unspecified
medium
medium
Target Milestone: ---
Assignee: Simone Caronni
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard: {"flaws": ["e76f215e-6d37-4bb7-aee7-d...
Depends On:
Blocks: CVE-2026-109939
TreeView+ depends on / blocked
 
Reported: 2026-10-26 16:28 UTC by Srikanth Balasubramanian
Modified: 2026-11-02 13:55 UTC (History)
4 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed: 2026-11-02 13:55:58 UTC
Type: ---
Embargoed:


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Description Srikanth Balasubramanian 2026-10-26 16:28:22 UTC
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

FreeRDP 3.27.1 before 3.32.0 contains a NULL pointer dereference in update_read_cache_bitmap_v3_order() in libfreerdp/core/orders.c, which accesses the client bitmap cache when the CBR3_DO_NOT_CACHE flag is set, even though the cache is not yet initialized before Demand Active. A malicious or compromised RDP server can send a Cache Bitmap V3 order during connection setup to crash a connecting client that has enabled the non-default Bitmap Cache V3 feature (/cache:codec:<rfx|nsc|jpeg>).

Comment 1 Ondrej Holy 2026-11-02 13:55:58 UTC
This issue is fixed in FreeRDP 3.32.0. Fedora currently ships freerdp 3.32.2 in all supported branches (F43, F44, F45 and Rawhide), so this flaw is no longer present. Closing as ERRATA.


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