Linux kernel vulnerabilities

Releases

• Ubuntu 4.10

Details

Georgi Guninski discovered two Denial of Service vulnerabilities in
the Linux kernel.

An integer overflow in the vc_resize() function caused the memory
allocation for the new screen being too short, thus causing a buffer
overflow and a kernel crash.

There was also a memory leak in the ip_options_get() function. Calling
ip_cmsg_send() very often would gradually exhaust memory.

Note: The original advisory (see URL above) also mentions a
“ip_options_get integer overflow”. This was already fixed in USN-38-1
(known as CAN-2004-1016).