Bug 2549766 (CVE-2026-109257) - CVE-2026-109257 freerdp: freerdp: Denial of Service via double-free in NSCodec
Summary: CVE-2026-109257 freerdp: freerdp: Denial of Service via double-free in NSCodec
Keywords:
Status: NEW
Alias: CVE-2026-109257
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:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-10-12 16:45 UTC by OSIDB Bzimport
Modified: 2026-10-13 10:33 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)

Description OSIDB Bzimport 2026-10-12 16:45:13 UTC 
FreeRDP before 3.32.0 contains a double-free vulnerability in nsc_context_initialize_encode() that leaves dangling plane pointers after a partial buffer growth failure. Attackers using a crafted RDP client can negotiate NSCodec with a large desktop geometry to trigger allocation failure, crashing the server during context teardown.
Note You need to log in before you can comment on or make changes to this bug.