Heap-based Buffer Overflow Affecting freerdp-libs-debuginfo package, versions <2:2.11.7-7.el8_10


Severity

Recommended
high

Based on Rocky Linux security rating.

Threat Intelligence

EPSS
0.05% (14th percentile)

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  • Snyk IDSNYK-ROCKY8-FREERDPLIBSDEBUGINFO-16191056
  • published24 Apr 2026
  • disclosed30 Mar 2026

Introduced: 30 Mar 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 Rocky-Linux:8 freerdp-libs-debuginfo to version 2:2.11.7-7.el8_10 or higher.
This issue was patched in RLSA-2026:8945.

NVD Description

Note: Versions mentioned in the description apply only to the upstream freerdp-libs-debuginfo package and not the freerdp-libs-debuginfo package as distributed by Rocky-Linux. See How to fix? for Rocky-Linux:8 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