Bug 2567613 (CVE-2026-121954) - CVE-2026-121954 freerdp: freerdp: Denial of Service via heap out-of-bounds write in planar codec
Summary: CVE-2026-121954 freerdp: freerdp: Denial of Service via heap out-of-bounds wr...
Keywords:
Status: NEW
Alias: CVE-2026-121954
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: 2026-11-05 22:12 UTC by OSIDB Bzimport
Modified: 2026-11-06 12:52 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
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Description OSIDB Bzimport 2026-11-05 22:12:10 UTC 
FreeRDP before 3.32.2 has a heap out-of-bounds write in the planar codec because freerdp_bitmap_planar_context_reset commits new dimensions before buffer reallocation succeeds, and a failed ResetGraphics is only logged. A malicious RDP server can send an oversized ResetGraphics PDU, then a GFX PLANAR command, to corrupt client heap memory and crash the client.
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