SUSE-SU-2016:0386-1

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SUSE-SU-2016:0386-1

Summary: Security update for kernel live patch 6

Details: This kernel live patch for Linux Kernel 3.12.44-52.10.1 fixes security issues and bugs: Security issues fixed: - CVE-2015-8539: A negatively instantiated user key could have been used by a local user to leverage privileges (bnc#958601). - CVE-2015-6937: A NULL pointer dereference flaw was found in the Reliable Datagram Sockets (RDS) implementation allowing a local user to cause system DoS. A verification was missing that the underlying transport exists when a connection was created. (bsc#953052) - CVE-2015-7990: RDS: Verify the underlying transport exists before creating a connection, preventing possible DoS (bsc#953052). - CVE-2015-7872: Possible crash when trying to garbage collect an uninstantiated keyring (bsc#951542). - CVE-2015-2925: The prepend_path function in fs/dcache.c in the Linux kernel did not properly handle rename actions inside a bind mount, which allowed local users to bypass an intended container protection mechanism by renaming a directory, related to a 'double-chroot attack (bnc#951625). Non-security bugfix were also done: - xfs: Fix lost direct IO write in the last block (bsc#954005). - simple fix in kallsyms initialization (bsc#940342 bsc#916225)

References: https://www.suse.com/support/update/announcement/2016/suse-su-20160386-1/, https://bugzilla.suse.com/916225, https://bugzilla.suse.com/940342, https://bugzilla.suse.com/951542, https://bugzilla.suse.com/951625, https://bugzilla.suse.com/953052, https://bugzilla.suse.com/954005, https://bugzilla.suse.com/958601, https://www.suse.com/security/cve/CVE-2015-2925, https://www.suse.com/security/cve/CVE-2015-6937, https://www.suse.com/security/cve/CVE-2015-7872, https://www.suse.com/security/cve/CVE-2015-7990, https://www.suse.com/security/cve/CVE-2015-8539