Bug 2562593 - CVE-2026-109951 freerdp: FreeRDP 3.17.1 before 3.32.0 Heap Buffer Over-Read via Proxy DRDYNVC Channel Name [fedora-43]
Summary: CVE-2026-109951 freerdp: FreeRDP 3.17.1 before 3.32.0 Heap Buffer Over-Read v...
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": ["137ed680-51e1-47ef-9038-5...
Depends On:
Blocks: CVE-2026-109951
TreeView+ depends on / blocked
 
Reported: 2026-10-28 08:38 UTC by Srikanth Balasubramanian
Modified: 2026-11-02 15:10 UTC (History)
4 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed: 2026-11-02 15:10:29 UTC
Type: ---
Embargoed:


Attachments (Terms of Use)

Description Srikanth Balasubramanian 2026-10-28 08:38:29 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 3.17.1 before 3.32.0 contains a heap buffer over-read vulnerability in DynvcTrackerHandleCreateBack of the freerdp-proxy DRDYNVC channel handler that allows malicious backend RDP servers to read heap memory out of bounds. Attackers can send a CREATE_REQUEST_PDU whose channel name lacks a NUL byte, causing an unbounded snprintf read that leaks memory into proxy logs or crashes the process.

Comment 1 Ondrej Holy 2026-11-02 15:10:29 UTC
Fixed in FreeRDP 3.32.0 (upstream). Fedora 43, 44, 45 and Rawhide ship freerdp 3.32.2, which contains the fix. Closing as ERRATA.


Note You need to log in before you can comment on or make changes to this bug.