fkie_cve-2025-38618
Vulnerability from fkie_nvd
Published
2025-08-22 14:15
Modified
2025-08-28 15:15
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
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/32950b1907919be86a7a2697d6f93d57068b3865
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/44bd006d5c93f6a8f28b106cbae2428c5d0275b7
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8f01093646b49f6330bb2d36761983fd829472b1
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/aba0c94f61ec05315fa7815d21aefa4c87f6a9f4
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c04a2c1ca25b9b23104124d3b2d349d934e302de
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/cf86704798c1b9c46fa59dfc2d662f57d1394d79
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d1a5b1964cef42727668ac0d8532dae4f8c19386
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d73960f0cf03ef1dc9e96ec7a20e538accc26d87
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f138be5d7f301fddad4e65ec66dfc3ceebf79be3
Impacted products
Vendor Product Version


To clipboard 

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "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."
    },
    {
      "lang": "es",
      "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."
    }
  ],
  "id": "CVE-2025-38618",
  "lastModified": "2025-08-28T15:15:56.060",
  "metrics": {},
  "published": "2025-08-22T14:15:46.303",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/32950b1907919be86a7a2697d6f93d57068b3865"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/44bd006d5c93f6a8f28b106cbae2428c5d0275b7"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/8f01093646b49f6330bb2d36761983fd829472b1"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/aba0c94f61ec05315fa7815d21aefa4c87f6a9f4"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/c04a2c1ca25b9b23104124d3b2d349d934e302de"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/cf86704798c1b9c46fa59dfc2d662f57d1394d79"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/d1a5b1964cef42727668ac0d8532dae4f8c19386"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/d73960f0cf03ef1dc9e96ec7a20e538accc26d87"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/f138be5d7f301fddad4e65ec66dfc3ceebf79be3"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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