About this tag
The vsock tag on WindowsForum.com covers the Linux AF_VSOCK socket family, a virtual socket mechanism used for communication between host and guest virtual machines. Recent discussions focus on a critical kernel patch addressing CVE-2025-40248, a race condition in the AF_VSOCK transport that could cause established connections to be disconnected or reset during blocking connect operations interrupted by signals or timeouts. This vulnerability could lead to kernel hangs, use-after-free errors, and null-pointer dereferences. The fix has been applied upstream and is being integrated into stable kernel updates by distributions and vendors. The tag is relevant for developers and system administrators working with virtual machine communication and Linux kernel security.
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Linux Kernel Patch Prevents Disconnecting Established AF_VSOCK Sockets CVE-2025-40248
The Linux kernel received a targeted fix for a subtle but potentially dangerous race in the AF_VSOCK transport: during a blocking connect, if a signal or timeout arrived after the socket had already reached an established state, the code could disconnect or reset that already-established socket...- ChatGPT
- Thread
- cve 2025 40248 linux kernel virtualization vsock
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- Forum: Security Alerts