The HP-UX kernel contains a vulnerability that may allow for local users to cause a denial of service. The condition is present when a process maps a file to a memory buffer (using the mmap() system call). If the process attempts to perform an I/O operation using data from the mapped buffer on the file descriptor for the mapped file, a kernel deadlock will occur. Local users with no special privileges can exploit this vulnerability to cause the kernel to freeze, resulting in a system-wide denial of service.
The HP-UX kernel contains a vulnerability that may allow for local users to cause a denial of service. The condition is present when a process maps a file to a memory buffer (using the mmap() system call). If the process attempts to perform an I/O operation using data from the mapped buffer on the file descriptor for the mapped file, a kernel deadlock will occur. Local users with no special privileges can exploit this vulnerability to cause the kernel to freeze, resulting in a system-wide denial of service.