Heap-based Buffer Overflow Affecting freerdp-sdl package, versions <3.24.2-160000.1.1


Severity

Recommended
0.0
high
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.05% (16th percentile)

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  • Snyk IDSNYK-SLES1600-FREERDPSDL-16419989
  • published5 May 2026
  • disclosed30 Apr 2026

Introduced: 30 Apr 2026

NewCVE-2026-33984  (opens in a new tab)
CWE-122  (opens in a new tab)
CWE-131  (opens in a new tab)

How to fix?

Upgrade SLES:16.0.0 freerdp-sdl to version 3.24.2-160000.1.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream freerdp-sdl package and not the freerdp-sdl package as distributed by SLES. See How to fix? for SLES:16.0.0 relevant fixed versions and status.

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.24.2, in resize_vbar_entry() in libfreerdp/codec/clear.c, vBarEntry->size is updated to vBarEntry->count before the winpr_aligned_recalloc() call. If realloc fails, size is inflated while pixels still points to the old, smaller buffer. On a subsequent call where count <= size (the inflated value), realloc is skipped. The caller then writes count * bpp bytes of attacker-controlled pixel data into the undersized buffer, causing a heap buffer overflow. This issue has been patched in version 3.24.2.

CVSS Base Scores

version 3.1