CVE-2026-33986

Description

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.

PUBLISHED Reserved 2026-03-24 | Published 2026-03-30 | Updated 2026-04-01 | Assigner GitHub_M

Problem types

CWE-122: Heap-based Buffer Overflow

CWE-131: Incorrect Calculation of Buffer Size

Product status

References

github.com/...reeRDP/security/advisories/GHSA-h6qw-wxvm-hf97

github.com/...ommit/f6e43e208958140074ae9bb93cd0c9045a371c77

cve.org (CVE-2026-33986)

nvd.nist.gov (CVE-2026-33986)

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