SUSE-SU-2016:2074-1

The SUSE Linux Enterprise 11 SP2 kernel was updated to receive various security and bug fixes.

The following security bugs were fixed: - CVE-2016-4486: Fixed 4 byte information leak in net/core/rtnetlink.c (bsc#978822). - CVE-2016-3134: The netfilter subsystem in the Linux kernel did not validate certain offset fields, which allowed local users to gain privileges or cause a denial of service (heap memory corruption) via an IPTSOSETREPLACE setsockopt call (bnc#971126). - CVE-2016-2847: fs/pipe.c in the Linux kernel did not limit the amount of unread data in pipes, which allowed local users to cause a denial of service (memory consumption) by creating many pipes with non-default sizes (bnc#970948). - CVE-2016-2188: The iowarriorprobe function in drivers/usb/misc/iowarrior.c in the Linux kernel allowed physically proximate attackers to cause a denial of service (NULL pointer dereference and system crash) via a crafted endpoints value in a USB device descriptor (bnc#970956). - CVE-2016-3138: The acmprobe function in drivers/usb/class/cdc-acm.c in the Linux kernel allowed physically proximate attackers to cause a denial of service (NULL pointer dereference and system crash) via a USB device without both a control and a data endpoint descriptor (bnc#970911). - CVE-2016-3137: drivers/usb/serial/cypressm8.c in the Linux kernel allowed physically proximate attackers to cause a denial of service (NULL pointer dereference and system crash) via a USB device without both an interrupt-in and an interrupt-out endpoint descriptor, related to the cypressgenericportprobe and cypressopen functions (bnc#970970). - CVE-2016-3140: The digiportinit function in drivers/usb/serial/digiacceleport.c in the Linux kernel allowed physically proximate attackers to cause a denial of service (NULL pointer dereference and system crash) via a crafted endpoints value in a USB device descriptor (bnc#970892). - CVE-2016-2186: The powermateprobe function in drivers/input/misc/powermate.c in the Linux kernel allowed physically proximate attackers to cause a denial of service (NULL pointer dereference and system crash) via a crafted endpoints value in a USB device descriptor (bnc#970958). - CVE-2016-2185: The atiremote2probe function in drivers/input/misc/atiremote2.c in the Linux kernel allowed physically proximate attackers to cause a denial of service (NULL pointer dereference and system crash) via a crafted endpoints value in a USB device descriptor (bnc#971124). - CVE-2016-3156: The IPv4 implementation in the Linux kernel mishandles destruction of device objects, which allowed guest OS users to cause a denial of service (host OS networking outage) by arranging for a large number of IP addresses (bnc#971360). - CVE-2016-2184: The createfixedstreamquirk function in sound/usb/quirks.c in the snd-usb-audio driver in the Linux kernel allowed physically proximate attackers to cause a denial of service (NULL pointer dereference or double free, and system crash) via a crafted endpoints value in a USB device descriptor (bnc#971125). - CVE-2016-3139: The wacomprobe function in drivers/input/tablet/wacomsys.c in the Linux kernel allowed physically proximate attackers to cause a denial of service (NULL pointer dereference and system crash) via a crafted endpoints value in a USB device descriptor (bnc#970909). - CVE-2016-2143: The fork implementation in the Linux kernel on s390 platforms mishandled the case of four page-table levels, which allowed local users to cause a denial of service (system crash) or possibly have unspecified other impact via a crafted application, related to arch/s390/include/asm/mmucontext.h and arch/s390/include/asm/pgalloc.h (bnc#970504). - CVE-2016-2782: The treoattach function in drivers/usb/serial/visor.c in the Linux kernel allowed physically proximate attackers to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact by inserting a USB device that lacks a (1) bulk-in or (2) interrupt-in endpoint (bnc#968670). - CVE-2015-8816: The hubactivate function in drivers/usb/core/hub.c in the Linux kernel did not properly maintain a hub-interface data structure, which allowed physically proximate attackers to cause a denial of service (invalid memory access and system crash) or possibly have unspecified other impact by unplugging a USB hub device (bnc#968010). - CVE-2015-7566: The clie5attach function in drivers/usb/serial/visor.c in the Linux kernel allowed physically proximate attackers to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact by inserting a USB device that lacks a bulk-out endpoint (bnc#961512). - CVE-2016-2549: sound/core/hrtimer.c in the Linux kernel did not prevent recursive callback access, which allowed local users to cause a denial of service (deadlock) via a crafted ioctl call (bnc#968013). - CVE-2016-2547: sound/core/timer.c in the Linux kernel employed a locking approach that did not consider slave timer instances, which allowed local users to cause a denial of service (race condition, use-after-free, and system crash) via a crafted ioctl call (bnc#968011). - CVE-2016-2548: sound/core/timer.c in the Linux kernel retained certain linked lists after a close or stop action, which allowed local users to cause a denial of service (system crash) via a crafted ioctl call, related to the (1) sndtimerclose and (2) _sndtimerstop functions (bnc#968012). - CVE-2016-2546: sound/core/timer.c in the Linux kernel used an incorrect type of mutex, which allowed local users to cause a denial of service (race condition, use-after-free, and system crash) via a crafted ioctl call (bnc#967975). - CVE-2016-2545: The sndtimerinterrupt function in sound/core/timer.c in the Linux kernel did not properly maintain a certain linked list, which allowed local users to cause a denial of service (race condition and system crash) via a crafted ioctl call (bnc#967974). - CVE-2016-2544: Race condition in the queuedelete function in sound/core/seq/seqqueue.c in the Linux kernel allowed local users to cause a denial of service (use-after-free and system crash) by making an ioctl call at a certain time (bnc#967973). - CVE-2016-2543: The sndseqioctlremoveevents function in sound/core/seq/seqclientmgr.c in the Linux kernel did not verify FIFO assignment before proceeding with FIFO clearing, which allowed local users to cause a denial of service (NULL pointer dereference and OOPS) via a crafted ioctl call (bnc#967972). - CVE-2016-2384: Double free vulnerability in the sndusbmidicreate function in sound/usb/midi.c in the Linux kernel allowed physically proximate attackers to cause a denial of service (panic) or possibly have unspecified other impact via vectors involving an invalid USB descriptor (bnc#966693). - CVE-2015-8812: drivers/infiniband/hw/cxgb3/iwchcm.c in the Linux kernel did not properly identify error conditions, which allowed remote attackers to execute arbitrary code or cause a denial of service (use-after-free) via crafted packets (bnc#966437). - CVE-2015-8785: The fusefillwritepages function in fs/fuse/file.c in the Linux kernel allowed local users to cause a denial of service (infinite loop) via a writev system call that triggers a zero length for the first segment of an iov (bnc#963765). - CVE-2016-2069: Race condition in arch/x86/mm/tlb.c in the Linux kernel .4.1 allowed local users to gain privileges by triggering access to a paging structure by a different CPU (bnc#963767). - CVE-2016-0723: Race condition in the ttyioctl function in drivers/tty/ttyio.c in the Linux kernel allowed local users to obtain sensitive information from kernel memory or cause a denial of service (use-after-free and system crash) by making a TIOCGETD ioctl call during processing of a TIOCSETD ioctl call (bnc#961500). - CVE-2013-7446: Use-after-free vulnerability in net/unix/afunix.c in the Linux kernel allowed local users to bypass intended AFUNIX socket permissions or cause a denial of service (panic) via crafted epollctl calls (bnc#955654). - CVE-2015-8767: net/sctp/smsideeffect.c in the Linux kernel did not properly manage the relationship between a lock and a socket, which allowed local users to cause a denial of service (deadlock) via a crafted sctpaccept call (bnc#961509). - CVE-2015-7515: The aiptekprobe function in drivers/input/tablet/aiptek.c in the Linux kernel allowed physically proximate attackers to cause a denial of service (NULL pointer dereference and system crash) via a crafted USB device that lacks endpoints (bnc#956708). - CVE-2015-8215: net/ipv6/addrconf.c in the IPv6 stack in the Linux kernel did not validate attempted changes to the MTU value, which allowed context-dependent attackers to cause a denial of service (packet loss) via a value that is (1) smaller than the minimum compliant value or (2) larger than the MTU of an interface, as demonstrated by a Router Advertisement (RA) message that is not validated by a daemon, a different vulnerability than CVE-2015-0272 (bnc#955354). - CVE-2015-7550: The keyctlreadkey function in security/keys/keyctl.c in the Linux kernel did not properly use a semaphore, which allowed local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact via a crafted application that leverages a race condition between keyctlrevoke and keyctlread calls (bnc#958951). - CVE-2015-8569: The (1) pptpbind and (2) pptpconnect functions in drivers/net/ppp/pptp.c in the Linux kernel did not verify an address length, which allowed local users to obtain sensitive information from kernel memory and bypass the KASLR protection mechanism via a crafted application (bnc#959190). - CVE-2015-8575: The scosockbind function in net/bluetooth/sco.c in the Linux kernel did not verify an address length, which allowed local users to obtain sensitive information from kernel memory and bypass the KASLR protection mechanism via a crafted application (bnc#959399). - CVE-2015-8543: The networking implementation in the Linux kernel did not validate protocol identifiers for certain protocol families, which allowed local users to cause a denial of service (NULL function pointer dereference and system crash) or possibly gain privileges by leveraging CLONENEWUSER support to execute a crafted SOCKRAW application (bnc#958886). - CVE-2015-8539: The KEYS subsystem in the Linux kernel allowed local users to gain privileges or cause a denial of service (BUG) via crafted keyctl commands that negatively instantiate a key, related to security/keys/encrypted-keys/encrypted.c, security/keys/trusted.c, and security/keys/userdefined.c (bnc#958463). - CVE-2015-7509: fs/ext4/namei.c in the Linux kernel allowed physically proximate attackers to cause a denial of service (system crash) via a crafted no-journal filesystem, a related issue to CVE-2013-2015 (bnc#956709). - CVE-2015-7799: The slhcinit function in drivers/net/slip/slhc.c in the Linux kernel did not ensure that certain slot numbers are valid, which allowed local users to cause a denial of service (NULL pointer dereference and system crash) via a crafted PPPIOCSMAXCID ioctl call (bnc#949936). - CVE-2015-8104: The KVM subsystem in the Linux kernel allowed guest OS users to cause a denial of service (host OS panic or hang) by triggering many #DB (aka Debug) exceptions, related to svm.c (bnc#954404). - CVE-2015-5307: The KVM subsystem in the Linux kernel allowed guest OS users to cause a denial of service (host OS panic or hang) by triggering many #AC (aka Alignment Check) exceptions, related to svm.c and vmx.c (bnc#953527). - CVE-2015-7990: Race condition in the rdssendmsg function in net/rds/sendmsg.c in the Linux kernel allowed local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact by using a socket that was not properly bound (bnc#952384). - CVE-2015-7872: The keygcunusedkeys function in security/keys/gc.c in the Linux kernel allowed local users to cause a denial of service (OOPS) via crafted keyctl commands (bnc#951440). - CVE-2015-6937: The _rdsconncreate function in net/rds/connection.c in the Linux kernel allowed local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact by using a socket that was not properly bound (bnc#945825). - CVE-2015-6252: The vhostdevioctl function in drivers/vhost/vhost.c in the Linux kernel allowed local users to cause a denial of service (memory consumption) via a VHOSTSETLOGFD ioctl call that triggers permanent file-descriptor allocation (bnc#942367). - CVE-2015-3339: Race condition in the prepare_binprm function in fs/exec.c in the Linux kernel allowed local users to gain privileges by executing a setuid program at a time instant when a chown to root is in progress, and the ownership is changed but the setuid bit is not yet stripped (bnc#928130).

The following non-security bugs were fixed: - Fix handling of re-write-before-commit for mmapped NFS pages (bsc#964201). - Fix lpfcsendrscnevent allocation size claims bnc#935757 - Fix ntpd clock synchronization in Xen PV domains (bnc#816446). - Fix vmallocfault oops during lazy MMU updates (bsc#948562). - Make sure XPRTCONNECTING gets cleared when needed (bsc#946309). - SCSI: bfa: Fix to handle firmware tskim abort request response (bsc#972510). - USB: usbip: fix potential out-of-bounds write (bnc#975945). - afunix: Guard against other == sk in unixdgramsendmsg (bsc#973570). - dm-snap: avoid deadock on s->lock when a read is split (bsc#939826). - mm/hugetlb: check for pte NULL pointer in _pagecheckaddress() (bsc#977847). - nfconntrack: fix bsc#758540 kabi fix (bsc#946117). - privcmd: allow preempting long running user-mode originating hypercalls (bnc#861093). - s390/cio: collect format 1 channel-path description data (bsc#966460, bsc#966662). - s390/cio: ensure consistent measurement state (bsc#966460, bsc#966662). - s390/cio: fix measurement characteristics memleak (bsc#966460, bsc#966662). - s390/cio: update measurement characteristics (bsc#966460, bsc#966662). - xfs: Fix lost direct IO write in the last block (bsc#949744).