Medium [CVE-2026-91961] Denial of Service via URBDRC control-transfer request with invalid OutputBufferSize
This medium-severity Red Hat Linux advisory covers CVE-2026-91961; related products: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7.
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Summary
Denial of Service via URBDRC control-transfer request with invalid OutputBufferSize. Red Hat rates this moderate (CVSS 6.5).
Weakness: CWE-617.
Affected products named by the advisory: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; and 2 more.
Affected products named by the advisory: Red Hat Enterprise Linux 9; Red Hat package: freerdp.
- < 3.31.0
Official advisory · high-confidence parse· fetched 13 days ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.
Official advisory · high-confidence parse· fetched 13 days ago·verify at source
Mitigation checklist
- To mitigate this issue, users should only connect to trusted RDP servers. Additionally, running the FreeRDP client within a sandboxed environment can help limit the potential impact of such vulnerabilities.
Official advisory · high-confidence parse· fetched 13 days ago·verify at source
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