KB5017259—Windows devices that have the newest supported processors might be susceptible to data damage
Summary
Windows devices that support the newest Vector Advanced Encryption Standard (AES) (VAES) instruction set might be susceptible to data damage. The affected Windows devices use one of the following on new hardware:
AES XEX-based tweaked-codebook mode with ciphertext stealing (AES-XTS)
AES with Galois/Counter Mode (GCM) (AES-GCM)
To prevent further data damage, we addressed this issue in the May 24, 2022 preview release and the June 14, 2022 security release. After applying those updates, you might notice slower performance for almost one month after you install them on Windows Server 2022 and Windows 11 (original release). The scenarios that might have performance degradation include:
BitLocker
Transport Layer Security (TLS) (specifically load balancers)
Disk throughput, especially for enterprise customers
If this affects you, we strongly urge you to install the May 24, 2022 preview release or the June 14, 2022 security release as soon as possible to prevent further damage. Performance will be restored after you install the June 23, 2022 preview release or the July 12, 2022 security release.
Microsoft has published KB5017259 - Windows devices that have the newest supported processors might be susceptible to data damage for Windows 11 and Windows Server 2022.
