CVE-2026-24678: FreeRDP has a Heap-use-after-free in cam_v4l_stream_capture_thread

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-02-09 · updated 2026-07-15
Weakness: CWE-416

Description

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.22.0, A capture thread sends sample responses using a freed channel callback after a device channel close, leading to a use after free in ecam_channel_write. This vulnerability is fixed in 3.22.0.

Affected products

FreeRDP: before 3.22.0 — fixed in 3.22.0

How to fix

Upgrade to a fixed version: FreeRDP 3.22.0. Check the vendor advisory for mitigations.

References

https://github.com/FreeRDP/FreeRDP/commit/f3ab1a16139036179d9852745fdade18fec11600
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-6gvg-29wx-6v7h
https://access.redhat.com/errata/RHSA-2026:19033
https://access.redhat.com/errata/RHSA-2026:3068
https://access.redhat.com/errata/RHSA-2026:4121
https://access.redhat.com/security/cve/CVE-2026-24678
https://bugzilla.redhat.com/show_bug.cgi?id=2438197
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-24678.json

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