FKIE_CVE-2025-38618
Vulnerability from fkie_nvd - Published: 2025-08-22 14:15 - Updated: 2026-01-07 16:56
Severity ?
Summary
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.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | 6.17 | |
| debian | debian_linux | 11.0 |
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nvsock: Do not allow binding to VMADDR_PORT_ANY\n\nIt is possible for a vsock to autobind to VMADDR_PORT_ANY. This can\ncause a use-after-free when a connection is made to the bound socket.\nThe socket returned by accept() also has port VMADDR_PORT_ANY but is not\non the list of unbound sockets. Binding it will result in an extra\nrefcount decrement similar to the one fixed in fcdd2242c023 (vsock: Keep\nthe binding until socket destruction).\n\nModify the check in __vsock_bind_connectible() to also prevent binding\nto VMADDR_PORT_ANY."
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"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: vsock: No permitir la vinculaci\u00f3n a VMADDR_PORT_ANY. Es posible que un vsock se autoenlace a VMADDR_PORT_ANY. Esto puede causar un use-after-free cuando se establece una conexi\u00f3n al socket enlazado. El socket devuelto por accept() tambi\u00e9n tiene el puerto VMADDR_PORT_ANY, pero no est\u00e1 en la lista de sockets no enlazados. Vincularlo resultar\u00e1 en una disminuci\u00f3n adicional del recuento de referencias similar a la corregida en fcdd2242c023 (vsock: Mantener la vinculaci\u00f3n hasta la destrucci\u00f3n del socket). Modifique la comprobaci\u00f3n en __vsock_bind_connectible() para evitar tambi\u00e9n la vinculaci\u00f3n a VMADDR_PORT_ANY."
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"id": "CVE-2025-38618",
"lastModified": "2026-01-07T16:56:23.250",
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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