Microsoft Patches BPF Race Flaw in WSL2 and Azure Linux, Deploys CSAF/VEX Attestations to Advance Kernel Security
TL;DR
* CVE-2025-39863 use-after-free in Broadcom Wi-Fi driver (brcmfmac) exploited via timer-race, affects Azure Linux and AKS nodes; patch deployed upstream
* Microsoft patches CVE-2025-39886 BPF allocation flaw in WSL2 and CBL-Mariner kernels, publishes CSAF/VEX attestations for Azure Linux
* F2FS remount flaw (CVE-2023-53447) causes kernel crashes during concurrent file operations;
