CVE-2025-38460

In the Linux kernel, the following vulnerability has been resolved: atm: clip: Fix potential null-ptr-deref in to_atmarpd(). atmarpd is protected by RTNL since commit f3a0592b37b8 ("[ATM]: clip causes unregister hang"). However, it is not enough because to_atmarpd() is called without RTNL, especially clip_neigh_solicit() / neigh_ops->solicit() is unsleepable. Also, there is no RTNL dependency around atmarpd. Let's use a private mutex and RCU to protect access to atmarpd in to_atmarpd().
CVSS

No CVSS.

Configurations

No configuration.

History

29 Jul 2025, 14:14

Type Values Removed Values Added
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: atm: clip: Se corrige un posible error de referencia nulo en to_atmarpd(). atmarpd está protegido por RTNL desde el commit f3a0592b37b8 ("[ATM]: clip provoca un bloqueo al cancelar el registro"). Sin embargo, esto no es suficiente, ya que to_atmarpd() se llama sin RTNL, especialmente clip_neigh_solicit() / neigh_ops->solicit() no se puede suspender. Además, atmarpd no depende de RTNL. Usemos un mutex privado y una RCU para proteger el acceso a atmarpd en to_atmarpd().

25 Jul 2025, 16:15

Type Values Removed Values Added
New CVE

Information

Published : 2025-07-25 16:15

Updated : 2025-07-29 14:14


NVD link : CVE-2025-38460

Mitre link : CVE-2025-38460

CVE.ORG link : CVE-2025-38460


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Products Affected

No product.

CWE

No CWE.