CVE-2025-21792

CVE-2025-21792 is a Linux kernel issue affecting AX25 binding via SO_BINDTODEVICE or ax25_bind, where refcount leaks occur in ax25_release due to improper refcount handling. The root cause is that when a device is bound to a socket, refcounts must already be incremented for the bound device, but ...

The vulnerability of the ax25_release() function in the Linux operating system’s kernel allows a hacker to trigger a service failure.

The vulnerability of the ax25release function in the Linux operating system’s kernel is related to pointer arithmetic errors. Exploiting this vulnerability can allow a remote attacker to cause service interruptions...