Race Condition Affecting libwinpr-devel package, versions <2:3.6.3-1.amzn2023.0.13


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.36% (29th percentile)

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  • Snyk IDSNYK-AMZN2023-LIBWINPRDEVEL-18530193
  • published5 Aug 2026
  • disclosed8 Jul 2026

Introduced: 8 Jul 2026

CVE-2026-56297  (opens in a new tab)
CWE-364  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 libwinpr-devel to version 2:3.6.3-1.amzn2023.0.13 or higher.
This issue was patched in ALAS2023-2026-2012.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libwinpr-devel package and not the libwinpr-devel package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2023 relevant fixed versions and status.

FreeRDP before 3.22.0 contains a use-after-free vulnerability in dvcman_channel_close and dvcman_call_on_receive due to improper synchronization of channel_callback access. A malicious RDP server can trigger a race condition by sending DYNVC_DATA and DYNVC_CLOSE messages concurrently, causing heap-use-after-free in the drdynvc client thread and potentially enabling remote code execution or denial of service.

CVSS Base Scores

version 3.1