Incorrect Calculation of Buffer Size Affecting freerdp-libs-debuginfo package, versions <2:3.10.3-5.el10_1.6


Severity

Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.05% (14th percentile)

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  • Snyk IDSNYK-RHEL10-FREERDPLIBSDEBUGINFO-16094260
  • published17 Apr 2026
  • disclosed30 Mar 2026

Introduced: 30 Mar 2026

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

How to fix?

Upgrade RHEL:10 freerdp-libs-debuginfo to version 2:3.10.3-5.el10_1.6 or higher.
This issue was patched in RHSA-2026:8458.

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 RHEL. See How to fix? for RHEL:10 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