CVE-2025-38618

vsock: Do not allow binding to VMADDR_PORT_ANY

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.

N/A

CVSS

Severity:

EPSS 0.02%

Affected: Linux Linux

References

Link	Tags
https://git.kernel.org/stable/c/c04a2c1ca25b9b23104124d3b2d349d934e302de
https://git.kernel.org/stable/c/d1a5b1964cef42727668ac0d8532dae4f8c19386
https://git.kernel.org/stable/c/cf86704798c1b9c46fa59dfc2d662f57d1394d79
https://git.kernel.org/stable/c/f138be5d7f301fddad4e65ec66dfc3ceebf79be3
https://git.kernel.org/stable/c/44bd006d5c93f6a8f28b106cbae2428c5d0275b7
https://git.kernel.org/stable/c/32950b1907919be86a7a2697d6f93d57068b3865
https://git.kernel.org/stable/c/8f01093646b49f6330bb2d36761983fd829472b1
https://git.kernel.org/stable/c/d73960f0cf03ef1dc9e96ec7a20e538accc26d87
https://git.kernel.org/stable/c/aba0c94f61ec05315fa7815d21aefa4c87f6a9f4

Frequently Asked Questions

What is the severity of CVE-2025-38618?: CVE-2025-38618 has not yet been assigned a CVSS score.
How to fix CVE-2025-38618?: To fix CVE-2025-38618, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-38618 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2025-38618 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-38618?: CVE-2025-38618 affects Linux Linux, Linux Linux.

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