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.

Metrics

No CVSS v4.0

Attack Vector Local

Attack Complexity High

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Key SSVC decision points have not yet been added.

Affected Vendors & Products

Vendors Products
Linux
  • Linux Kernel

No data.

No data.

References
Link Providers
https://git.kernel.org/stable/c/32950b1907919be86a7a2697d6f93d57068b3865 cve-icon cve-icon
https://git.kernel.org/stable/c/44bd006d5c93f6a8f28b106cbae2428c5d0275b7 cve-icon cve-icon
https://git.kernel.org/stable/c/8f01093646b49f6330bb2d36761983fd829472b1 cve-icon cve-icon
https://git.kernel.org/stable/c/aba0c94f61ec05315fa7815d21aefa4c87f6a9f4 cve-icon cve-icon
https://git.kernel.org/stable/c/c04a2c1ca25b9b23104124d3b2d349d934e302de cve-icon cve-icon
https://git.kernel.org/stable/c/cf86704798c1b9c46fa59dfc2d662f57d1394d79 cve-icon cve-icon
https://git.kernel.org/stable/c/d1a5b1964cef42727668ac0d8532dae4f8c19386 cve-icon cve-icon
https://git.kernel.org/stable/c/d73960f0cf03ef1dc9e96ec7a20e538accc26d87 cve-icon cve-icon
https://git.kernel.org/stable/c/f138be5d7f301fddad4e65ec66dfc3ceebf79be3 cve-icon cve-icon
https://lore.kernel.org/linux-cve-announce/2025082213-CVE-2025-38618-1f1a@gregkh/T cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2025-38618 cve-icon
https://www.cve.org/CVERecord?id=CVE-2025-38618 cve-icon
History

Thu, 28 Aug 2025 15:00:00 +0000

Type Values Removed Values Added
References

Sat, 23 Aug 2025 11:00:00 +0000

Type Values Removed Values Added
First Time appeared Linux
Linux linux Kernel
Vendors & Products Linux
Linux linux Kernel

Sat, 23 Aug 2025 00:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

 cvssV3_1

{'score': 7.0, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H'}

threat_severity

Moderate

Fri, 22 Aug 2025 13:30:00 +0000

Type Values Removed Values Added
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.
Title vsock: Do not allow binding to VMADDR_PORT_ANY
References
cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2025-08-22T13:01:24.678Z

Updated: 2025-08-28T14:44:15.728Z

Reserved: 2025-04-16T04:51:24.029Z

Link: CVE-2025-38618

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-08-22T14:15:46.303

Modified: 2025-08-28T15:15:56.060

Link: CVE-2025-38618

cve-icon Redhat

Severity : Moderate

Publid Date: 2025-08-22T00:00:00Z

Links: CVE-2025-38618 - Bugzilla