Several vulnerabilities have been discovered in the Linux kernel that may lead to a denial of service or privilege escalation. The Common Vulnerabilities and Exposures project identifies the following problems: Joe Jin reported a local denial of service vulnerability that allows system users to trigger an oops due to an improperly initialized data structure. Jan Kratochvil reported a local denial of service vulnerability in the ptrace interface for the s390 architecture. Local users can trigger an invalid pointer dereference, leading to a system panic. Eugene Teo reported an integer overflow in the DCCP subsystem that may allow remote attackers to cause a denial of service in the form of a kernel panic. Eugene Teo reported a lack of capability checks in the kernel driver for Granch SBNI12 leased line adapters (sbni), allowing local users to perform privileged operations. The S_ISUID/S_ISGID bits were not being cleared during an inode splice, which, under certain conditions, can be exploited by local users to obtain the privileges of a group for which they are not a member. Mark Fasheh reported this issue. David Watson reported an issue in the open()/creat() system calls which, under certain conditions, can be exploited by local users to obtain the privileges of a group for which they are not a member. A coding error in the splice subsystem allows local users to attempt to unlock a page structure that has not been locked, resulting in a system crash.