Bug 2519822 (CVE-2026-63652) - CVE-2026-63652 FreeRDP: FreeRDP: Denial of Service and heap corruption via malformed RDP audio PDU
Summary: CVE-2026-63652 FreeRDP: FreeRDP: Denial of Service and heap corruption via ma...
Keywords:
Status: NEW
Alias: CVE-2026-63652
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
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Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-08-19 18:07 UTC by OSIDB Bzimport
Modified: 2026-08-20 13:36 UTC (History)
2 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-08-19 18:07:56 UTC 
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.28.0, rdpsnd_server_recv_formats in channels/rdpsnd/server/rdpsnd_main.c frees context->client_formats on a malformed Client Audio Formats PDU without clearing the owning pointer or num_client_formats. An authenticated RDP client can trigger an error such as a cbSize larger than the remaining record, leave the dangling pointer in the server context, and cause rdpsnd_server_context_free to free the same allocation again at session teardown. This reliably terminates the server and can create allocator-dependent heap corruption. This issue is fixed in version 3.28.0.
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