Bug 2453221 (CVE-2026-33986) - CVE-2026-33986 FreeRDP: FreeRDP: Arbitrary code execution or denial of service via H.264 codec memory allocation vulnerability
Summary: CVE-2026-33986 FreeRDP: FreeRDP: Arbitrary code execution or denial of servic...
Keywords:
Status: NEW
Alias: CVE-2026-33986
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
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Depends On: 2453251 2453253 2453252
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-03-30 22:01 UTC by OSIDB Bzimport
Modified: 2026-03-30 23:00 UTC (History)
0 users

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Description OSIDB Bzimport 2026-03-30 22:01:58 UTC 
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.24.2, in yuv_ensure_buffer() in libfreerdp/codec/h264.c, h264->width and h264->height are updated before the reallocation loop. If any winpr_aligned_recalloc() call fails, the function returns FALSE but width/height are already inflated. This issue has been patched in version 3.24.2.
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