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Multiple Linux Vendor IP Options Vulnerability

A vulnerability in the Linux Kernel's IPv4 option processing may allow a remote user to crash the system.

The vulnerability is the result of the kernel freeing a socket buffer when it shouldn't while sending an ICMP Parameter Problem error message in response to an IP packet with a malformed IP option. This results in the buffer being freed twice and in memory corruption.

Of the Debian Linux 2.1 supported architectures only the SPARC one is vulnerable.