UBUNTU-CVE-2025-38618
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.
02 / AFFECTED SOFTWARE
Affected packages
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63 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
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.
05 / REFERENCES
Further evidence
- https://git.kernel.org/linus/aba0c94f61ec05315fa7815d21aefa4c87f6a9f4
- https://git.kernel.org/stable/c/32950b1907919be86a7a2697d6f93d57068b3865
- https://git.kernel.org/stable/c/44bd006d5c93f6a8f28b106cbae2428c5d0275b7
- https://git.kernel.org/stable/c/8f01093646b49f6330bb2d36761983fd829472b1
- https://git.kernel.org/stable/c/aba0c94f61ec05315fa7815d21aefa4c87f6a9f4
- https://git.kernel.org/stable/c/d73960f0cf03ef1dc9e96ec7a20e538accc26d87
- https://git.kernel.org/stable/c/f138be5d7f301fddad4e65ec66dfc3ceebf79be3
- https://ubuntu.com/security/CVE-2025-38618
- https://ubuntu.com/security/notices/USN-7791-1
- https://ubuntu.com/security/notices/USN-7791-2
- https://ubuntu.com/security/notices/USN-7791-3
- https://ubuntu.com/security/notices/USN-7791-4
- https://ubuntu.com/security/notices/USN-7792-1
- https://ubuntu.com/security/notices/USN-7792-2
- https://ubuntu.com/security/notices/USN-7792-3
- https://ubuntu.com/security/notices/USN-7793-1
- https://ubuntu.com/security/notices/USN-7793-2
- https://ubuntu.com/security/notices/USN-7793-3
- https://ubuntu.com/security/notices/USN-7793-4
- https://ubuntu.com/security/notices/USN-7793-5
- https://ubuntu.com/security/notices/USN-7795-1
- https://ubuntu.com/security/notices/USN-7795-2
- https://ubuntu.com/security/notices/USN-7795-3
- https://ubuntu.com/security/notices/USN-7795-4
- https://ubuntu.com/security/notices/USN-7795-5
- https://ubuntu.com/security/notices/USN-7796-1
- https://ubuntu.com/security/notices/USN-7796-2
- https://ubuntu.com/security/notices/USN-7796-3
- https://ubuntu.com/security/notices/USN-7796-4
- https://ubuntu.com/security/notices/USN-7797-1
- https://ubuntu.com/security/notices/USN-7797-2
- https://ubuntu.com/security/notices/USN-7797-3
- https://ubuntu.com/security/notices/USN-7798-1
- https://ubuntu.com/security/notices/USN-7799-1
- https://ubuntu.com/security/notices/USN-7800-1
- https://ubuntu.com/security/notices/USN-7801-1
- https://ubuntu.com/security/notices/USN-7801-2
- https://ubuntu.com/security/notices/USN-7801-3
- https://ubuntu.com/security/notices/USN-7808-1
- https://ubuntu.com/security/notices/USN-7808-2
- https://ubuntu.com/security/notices/USN-7809-1
- https://ubuntu.com/security/notices/USN-7810-1
- https://ubuntu.com/security/notices/USN-7810-2
- https://ubuntu.com/security/notices/USN-7810-3
- https://ubuntu.com/security/notices/USN-7811-1
- https://ubuntu.com/security/notices/USN-7819-1
- https://ubuntu.com/security/notices/USN-7819-2
- https://ubuntu.com/security/notices/USN-7820-1
- https://ubuntu.com/security/notices/USN-7821-1
- https://ubuntu.com/security/notices/USN-7854-1
- https://ubuntu.com/security/notices/USN-7865-1
- https://ubuntu.com/security/notices/USN-7933-1
- https://www.cve.org/CVERecord?id=CVE-2025-38618