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Incorrect Calculation of Buffer Size The advisory has been revoked - it doesn't affect any version of package freerdp-libs  (opens in a new tab)

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EPSS
0.05% (16th percentile)

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  • Snyk IDSNYK-RHEL10-FREERDPLIBS-15881241
  • published3 Apr 2026
  • disclosed30 Mar 2026
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Introduced: 30 Mar 2026

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

Amendment

The Red Hat security team deemed this advisory irrelevant for RHEL:10.

NVD Description

Note: Versions mentioned in the description apply only to the upstream freerdp-libs package and not the freerdp-libs package as distributed by RHEL.

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.