CVE-2025-38618 - "vsock: VMADDR_PORT_ANY Binding Vulnerability"

CVE-2025-38618 - "vsock: VMADDR_PORT_ANY Binding Vulnerability"

https://cvefeed.io/rssfeed/latest.atom / Fri, 08/22/2025 - 17:35
CVE ID : CVE-2025-38618
Published : Aug. 22, 2025, 2:15 p.m. | 51 minutes ago
Description : In the Linux kernel, the following vulnerability has been resolved: vsock: Do not allow binding to VMADDR_PORT_ANY It is possible for a vsock to autobind to VMADDR_PORT_ANY. This can cause a use-after-free when a connection is made to the bound socket. The socket returned by accept() also has port VMADDR_PORT_ANY but is not on the list of unbound sockets. Binding it will result in an extra refcount decrement similar to the one fixed in fcdd2242c023 (vsock: Keep the binding until socket destruction). Modify the check in __vsock_bind_connectible() to also prevent binding to VMADDR_PORT_ANY.
Severity: 0.0 | NA
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