The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9 uses an incorrect integer data type, which allows local users to gain privileges via a crafted perf_event_open system call.

Updated kernel packages that fix one security issue are now available for Red Hat Enterprise Linux 6.3 Extended Update Support.

The Red Hat Security Response Team has rated this update as having important security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section.

The kernel packages contain the Linux kernel, the core of any Linux operating system.

This update fixes the following security issue :

* It was found that the Red Hat Enterprise Linux 6.1 kernel update (RHSA-2011:0542) introduced an integer conversion issue in the Linux kernel's Performance Events implementation. This led to a user-supplied index into the perf_swevent_enabled array not being validated properly, resulting in out-of-bounds kernel memory access. A local, unprivileged user could use this flaw to escalate their privileges. (CVE-2013-2094, Important)

A public exploit that affects Red Hat Enterprise Linux 6 is available.

Refer to Red Hat Knowledge Solution 373743, linked to in the References, for further information and mitigation instructions for users who are unable to immediately apply this update.

Users should upgrade to these updated packages, which contain a backported patch to correct this issue. The system must be rebooted for this update to take effect.

The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9 uses an incorrect integer data type.
(CVE-2013-2094)

Updated kernel-rt packages that fix several security issues and multiple bugs are now available for Red Hat Enterprise MRG 2.3.

The Red Hat Security Response Team has rated this update as having important security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

Security fixes :

* It was found that the kernel-rt update RHBA-2012:0044 introduced an integer conversion issue in the Linux kernel's Performance Events implementation. This led to a user-supplied index into the perf_swevent_enabled array not being validated properly, resulting in out-of-bounds kernel memory access. A local, unprivileged user could use this flaw to escalate their privileges. (CVE-2013-2094, Important)

A public exploit for CVE-2013-2094 that affects Red Hat Enterprise MRG 2 is available. Refer to Red Hat Knowledge Solution 373743, linked to in the References, for further information and mitigation instructions for users who are unable to immediately apply this update.

* An integer overflow flaw, leading to a heap-based buffer overflow, was found in the way the Intel i915 driver in the Linux kernel handled the allocation of the buffer used for relocation copies. A local user with console access could use this flaw to cause a denial of service or escalate their privileges. (CVE-2013-0913, Important)

* It was found that the Linux kernel used effective user and group IDs instead of real ones when passing messages with SCM_CREDENTIALS ancillary data. A local, unprivileged user could leverage this flaw with a set user ID (setuid) application, allowing them to escalate their privileges. (CVE-2013-1979, Important)

* A race condition in install_user_keyrings(), leading to a NULL pointer dereference, was found in the key management facility. A local, unprivileged user could use this flaw to cause a denial of service. (CVE-2013-1792, Moderate)

* A NULL pointer dereference flaw was found in the Linux kernel's XFS file system implementation. A local user who is able to mount an XFS file system could use this flaw to cause a denial of service.
(CVE-2013-1819, Moderate)

* An information leak was found in the Linux kernel's POSIX signals implementation. A local, unprivileged user could use this flaw to bypass the Address Space Layout Randomization (ASLR) security feature.
(CVE-2013-0914, Low)

* A use-after-free flaw was found in the tmpfs implementation. A local user able to mount and unmount a tmpfs file system could use this flaw to cause a denial of service or, potentially, escalate their privileges. (CVE-2013-1767, Low)

* A NULL pointer dereference flaw was found in the Linux kernel's USB Inside Out Edgeport Serial Driver implementation. A local user with physical access to a system and with access to a USB device's tty file could use this flaw to cause a denial of service. (CVE-2013-1774, Low)

* A format string flaw was found in the ext3_msg() function in the Linux kernel's ext3 file system implementation. A local user who is able to mount an ext3 file system could use this flaw to cause a denial of service or, potentially, escalate their privileges.
(CVE-2013-1848, Low)

* A heap-based buffer overflow flaw was found in the Linux kernel's cdc-wdm driver, used for USB CDC WCM device management. An attacker with physical access to a system could use this flaw to cause a denial of service or, potentially, escalate their privileges. (CVE-2013-1860, Low)

* A heap-based buffer overflow in the way the tg3 Ethernet driver parsed the vital product data (VPD) of devices could allow an attacker with physical access to a system to cause a denial of service or, potentially, escalate their privileges. (CVE-2013-1929, Low)

* Information leaks in the Linux kernel's cryptographic API could allow a local user who has the CAP_NET_ADMIN capability to leak kernel stack memory to user-space. (CVE-2013-2546, CVE-2013-2547, CVE-2013-2548, Low)

* Information leaks in the Linux kernel could allow a local, unprivileged user to leak kernel stack memory to user-space.
(CVE-2013-2634, CVE-2013-2635, CVE-2013-3076, CVE-2013-3222, CVE-2013-3224, CVE-2013-3225, CVE-2013-3231, Low)

Red Hat would like to thank Andy Lutomirski for reporting CVE-2013-1979. CVE-2013-1792 was discovered by Mateusz Guzik of Red Hat EMEA GSS SEG Team.

The openSUSE 12.2 kernel was updated to fix security issue and other bugs.

Security issues fixed: CVE-2013-2850: Incorrect strncpy usage in the network listening part of the iscsi target driver could have been used by remote attackers to crash the kernel or execute code.

This required the iscsi target running on the machine and the attacker able to make a network connection to it (aka not filtered by firewalls).

CVE-2013-2094: The perf_swevent_init function in kernel/events/core.c in the Linux kernel used an incorrect integer data type, which allowed local users to gain privileges via a crafted perf_event_open system call.

CVE-2013-0290: The __skb_recv_datagram function in net/core/datagram.c in the Linux kernel did not properly handle the MSG_PEEK flag with zero-length data, which allowed local users to cause a denial of service (infinite loop and system hang) via a crafted application.

Bugs fixed :

  - reiserfs: fix spurious multiple-fill in     reiserfs_readdir_dentry (bnc#822722).

  - reiserfs: fix problems with chowning setuid file w/     xattrs (bnc#790920).

  - qlge: fix dma map leak when the last chunk is not     allocated (bnc#819519).

  - Update config files: disable UCB1400 on all but ARM     Currently UCB1400 is only used on ARM OMAP systems, and     part of the code is dead code that can't even be     modularized.

  - CONFIG_UCB1400_CORE=n

  - CONFIG_TOUCHSCREEN_UCB1400=n

  - CONFIG_GPIO_UCB1400=n

  - mm/mmap: check for RLIMIT_AS before unmapping     (bnc#818327).

  - unix/stream: fix peeking with an offset larger than data     in queue (bnc#803931 CVE-2013-0290).

  - unix/dgram: fix peeking with an offset larger than data     in queue (bnc#803931 CVE-2013-0290).

  - unix/dgram: peek beyond 0-sized skbs (bnc#803931     CVE-2013-0290).

The openSUSE 12.1 kernel was updated to fix a severe secrutiy issue and various bugs.

Security issues fixed: CVE-2013-2094: The perf_swevent_init function in kernel/events/core.c in the Linux kernel used an incorrect integer data type, which allowed local users to gain privileges via a crafted perf_event_open system call.

CVE-2013-1774: The chase_port function in drivers/usb/serial/io_ti.c in the Linux kernel allowed local users to cause a denial of service (NULL pointer dereference and system crash) via an attempted /dev/ttyUSB read or write operation on a disconnected Edgeport USB serial converter.

CVE-2013-1928: The do_video_set_spu_palette function in fs/compat_ioctl.c in the Linux kernel lacked a certain error check, which might have allowed local users to obtain sensitive information from kernel stack memory via a crafted VIDEO_SET_SPU_PALETTE ioctl call on a /dev/dvb device.

CVE-2013-1796: The kvm_set_msr_common function in arch/x86/kvm/x86.c in the Linux kernel did not ensure a required time_page alignment during an MSR_KVM_SYSTEM_TIME operation, which allowed guest OS users to cause a denial of service (buffer overflow and host OS memory corruption) or possibly have unspecified other impact via a crafted application.

CVE-2013-1797: Use-after-free vulnerability in arch/x86/kvm/x86.c in the Linux kernel allowed guest OS users to cause a denial of service (host OS memory corruption) or possibly have unspecified other impact via a crafted application that triggers use of a guest physical address (GPA) in (1) movable or (2) removable memory during an MSR_KVM_SYSTEM_TIME kvm_set_msr_common operation.

CVE-2013-1798: The ioapic_read_indirect function in virt/kvm/ioapic.c in the Linux kernel did not properly handle a certain combination of invalid IOAPIC_REG_SELECT and IOAPIC_REG_WINDOW operations, which allowed guest OS users to obtain sensitive information from host OS memory or cause a denial of service (host OS OOPS) via a crafted application.

CVE-2013-1767: Use-after-free vulnerability in the shmem_remount_fs function in mm/shmem.c in the Linux kernel allowed local users to gain privileges or cause a denial of service (system crash) by remounting a tmpfs filesystem without specifying a required mpol (aka mempolicy) mount option.

CVE-2013-0913: Integer overflow in drivers/gpu/drm/i915/i915_gem_execbuffer.c in the i915 driver in the Direct Rendering Manager (DRM) subsystem in the Linux kernel allowed local users to cause a denial of service (heap-based buffer overflow) or possibly have unspecified other impact via a crafted application that triggers many relocation copies, and potentially leads to a race condition.

Bugs fixed :

  - qlge: fix dma map leak when the last chunk is not     allocated (bnc#819519).

  - TTY: fix atime/mtime regression (bnc#815745).

  - fs/compat_ioctl.c: VIDEO_SET_SPU_PALETTE missing error     check (bnc#813735).

  - USB: io_ti: Fix NULL dereference in chase_port()     (bnc#806976, CVE-2013-1774).

  - KVM: Convert MSR_KVM_SYSTEM_TIME to use     gfn_to_hva_cache_init (bnc#806980 CVE-2013-1797).

  - KVM: Fix bounds checking in ioapic indirect register     read (bnc#806980 CVE-2013-1798).

  - KVM: Fix for buffer overflow in handling of     MSR_KVM_SYSTEM_TIME (bnc#806980 CVE-2013-1796).

  - kabi/severities: Allow kvm module abi changes - modules     are self consistent

  - loopdev: fix a deadlock (bnc#809748).

  - block: use i_size_write() in bd_set_size() (bnc#809748).

  - drm/i915: bounds check execbuffer relocation count     (bnc#808829,CVE-2013-0913).

  - tmpfs: fix use-after-free of mempolicy object     (bnc#806138, CVE-2013-1767).

The openSUSE 12.3 kernel was updated to fix a critical security issue, other security issues and several bugs.

Security issues fixed: CVE-2013-2094: The perf_swevent_init function in kernel/events/core.c in the Linux kernel used an incorrect integer data type, which allowed local users to gain privileges via a crafted perf_event_open system call.

CVE-2013-0290: The __skb_recv_datagram function in net/core/datagram.c in the Linux kernel did not properly handle the MSG_PEEK flag with zero-length data, which allowed local users to cause a denial of service (infinite loop and system hang) via a crafted application.

Bugs fixed :

  - qlge: fix dma map leak when the last chunk is not     allocated (bnc#819519).

  - ACPI / thermal: do not always return     THERMAL_TREND_RAISING for active trip points     (bnc#820048).

  - perf: Treat attr.config as u64 in perf_swevent_init()     (bnc#819789, CVE-2013-2094).

  - cxgb4: fix error recovery when t4_fw_hello returns a     positive value (bnc#818497).

  - kabi/severities: Ignore drivers/mfd/ucb1400_core It     provides internal exports to UCB1400 drivers, that we     have just disabled.

  - Fix -devel package for armv7hl armv7hl kernel flavors in     the non-multiplatform configuration (which is the     default for our openSUSE 12.3 release), needs more     header files from the machine specific directories to be     included in kernel-devel.

  - Update config files: disable UCB1400 on all but ARM     Currently UCB1400 is only used on ARM OMAP systems, and     part of the code is dead code that can't even be     modularized.

  - CONFIG_UCB1400_CORE=n

  - CONFIG_TOUCHSCREEN_UCB1400=n

  - CONFIG_GPIO_UCB1400=n

  - rpm/config.sh: Drop the ARM repository, the KOTD will     build against the 'ports' repository of openSUSE:12.3

  - mm/mmap: check for RLIMIT_AS before unmapping     (bnc#818327).

  - rpm/kernel-spec-macros: Properly handle KOTD release     numbers with .g<commit> suffix

  - rpm/kernel-spec-macros: Drop the %release_num macro We     no longer put the -rcX tag into the release string.

  - xen-pciback: notify hypervisor about devices intended to     be assigned to guests.

  - unix/stream: fix peeking with an offset larger than data     in queue (bnc#803931 CVE-2013-0290).

  - unix/dgram: fix peeking with an offset larger than data     in queue (bnc#803931 CVE-2013-0290).

  - unix/dgram: peek beyond 0-sized skbs (bnc#803931     CVE-2013-0290).

  - net: fix infinite loop in __skb_recv_datagram()     (bnc#803931 CVE-2013-0290).

  - TTY: fix atime/mtime regression (bnc#815745).

  - md/raid1,raid10: fix deadlock with freeze_array()     (813889).

  - md: raid1,10: Handle REQ_WRITE_SAME flag in write bios     (bnc#813889).

  - KMS: fix EDID detailed timing vsync parsing.

  - KMS: fix EDID detailed timing frame rate.

  - Add Netfilter/ebtables support Those modues are needed     for proper OpenStack support on ARM, and are also     enabled on x86(_64)

A flaw was found in the way index into perf_swevent_enabled array was sanitized. A local, unprivileged user could leverage this flaw to gain elevated privileges on the system.

The remote Oracle Linux 5 / 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2013-2546 advisory.

  - The mmc_ioctl_cdrom_read_data function in drivers/cdrom/cdrom.c in the Linux kernel through 3.10 allows     local users to obtain sensitive information from kernel memory via a read operation on a malfunctioning     CD-ROM drive. (CVE-2013-2164)

  - The (1) key_notify_sa_flush and (2) key_notify_policy_flush functions in net/key/af_key.c in the Linux     kernel before 3.10 do not initialize certain structure members, which allows local users to obtain     sensitive information from kernel heap memory by reading a broadcast message from the notify interface of     an IPSec key_socket. (CVE-2013-2234)

  - The isofs_export_encode_fh function in fs/isofs/export.c in the Linux kernel before 3.6 does not     initialize a certain structure member, which allows local users to obtain sensitive information from     kernel heap memory via a crafted application. (CVE-2012-6549)

  - The log_prefix function in kernel/printk.c in the Linux kernel 3.x before 3.4.33 does not properly remove     a prefix string from a syslog header, which allows local users to cause a denial of service (buffer     overflow and system crash) by leveraging /dev/kmsg write access and triggering a call_console_drivers     function call. (CVE-2013-1772)

  - The dispatch_discard_io function in drivers/block/xen-blkback/blkback.c in the Xen blkback implementation     in the Linux kernel before 3.10.5 allows guest OS users to cause a denial of service (data loss) via     filesystem write operations on a read-only disk that supports the (1) BLKIF_OP_DISCARD (aka discard or     TRIM) or (2) SCSI UNMAP feature. (CVE-2013-2140)

  - The crypto API in the Linux kernel through 3.9-rc8 does not initialize certain length variables, which     allows local users to obtain sensitive information from kernel stack memory via a crafted recvmsg or     recvfrom system call, related to the hash_recvmsg function in crypto/algif_hash.c and the skcipher_recvmsg     function in crypto/algif_skcipher.c. (CVE-2013-3076)

  - The ip6_append_data_mtu function in net/ipv6/ip6_output.c in the IPv6 implementation in the Linux kernel     through 3.10.3 does not properly maintain information about whether the IPV6_MTU setsockopt option had     been specified, which allows local users to cause a denial of service (BUG and system crash) via a crafted     application that uses the UDP_CORK option in a setsockopt system call. (CVE-2013-4163)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 5 / 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2013-2525 advisory.

  - The llc_ui_getname function in net/llc/af_llc.c in the Linux kernel before 3.6 has an incorrect return     value in certain circumstances, which allows local users to obtain sensitive information from kernel stack     memory via a crafted application that leverages an uninitialized pointer argument. (CVE-2012-6542)

  - Heap-based buffer overflow in the tg3_read_vpd function in drivers/net/ethernet/broadcom/tg3.c in the     Linux kernel before 3.8.6 allows physically proximate attackers to cause a denial of service (system     crash) or possibly execute arbitrary code via crafted firmware that specifies a long string in the Vital     Product Data (VPD) data structure. (CVE-2013-1929)

  - Heap-based buffer overflow in the wdm_in_callback function in drivers/usb/class/cdc-wdm.c in the Linux     kernel before 3.8.4 allows physically proximate attackers to cause a denial of service (system crash) or     possibly execute arbitrary code via a crafted cdc-wdm USB device. (CVE-2013-1860)

  - fs/ext3/super.c in the Linux kernel before 3.8.4 uses incorrect arguments to functions in certain     circumstances related to printk input, which allows local users to conduct format-string attacks and     possibly gain privileges via a crafted application. (CVE-2013-1848)

  - The scm_set_cred function in include/net/scm.h in the Linux kernel before 3.8.11 uses incorrect uid and     gid values during credentials passing, which allows local users to gain privileges via a crafted     application. (CVE-2013-1979)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 5 / 6 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2013-2524 advisory.

  - The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9 uses an incorrect     integer data type, which allows local users to gain privileges via a crafted perf_event_open system call.
    (CVE-2013-2094)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 6 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2013-0830 advisory.

  - The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9 uses an incorrect     integer data type, which allows local users to gain privileges via a crafted perf_event_open system call.
    (CVE-2013-2094)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Multiple vulnerabilities has been found and corrected in the Linux kernel :

The scm_set_cred function in include/net/scm.h in the Linux kernel before 3.8.11 uses incorrect uid and gid values during credentials passing, which allows local users to gain privileges via a crafted application. (CVE-2013-1979)

The nr_recvmsg function in net/netrom/af_netrom.c in the Linux kernel before 3.9-rc7 does not initialize a certain data structure, which allows local users to obtain sensitive information from kernel stack memory via a crafted recvmsg or recvfrom system call. (CVE-2013-3232)

net/tipc/socket.c in the Linux kernel before 3.9-rc7 does not initialize a certain data structure and a certain length variable, which allows local users to obtain sensitive information from kernel stack memory via a crafted recvmsg or recvfrom system call.
(CVE-2013-3235)

The rose_recvmsg function in net/rose/af_rose.c in the Linux kernel before 3.9-rc7 does not initialize a certain data structure, which allows local users to obtain sensitive information from kernel stack memory via a crafted recvmsg or recvfrom system call. (CVE-2013-3234)

The llcp_sock_recvmsg function in net/nfc/llcp/sock.c in the Linux kernel before 3.9-rc7 does not initialize a certain length variable and a certain data structure, which allows local users to obtain sensitive information from kernel stack memory via a crafted recvmsg or recvfrom system call. (CVE-2013-3233)

The llc_ui_recvmsg function in net/llc/af_llc.c in the Linux kernel before 3.9-rc7 does not initialize a certain length variable, which allows local users to obtain sensitive information from kernel stack memory via a crafted recvmsg or recvfrom system call. (CVE-2013-3231)

The iucv_sock_recvmsg function in net/iucv/af_iucv.c in the Linux kernel before 3.9-rc7 does not initialize a certain length variable, which allows local users to obtain sensitive information from kernel stack memory via a crafted recvmsg or recvfrom system call.
(CVE-2013-3229)

The irda_recvmsg_dgram function in net/irda/af_irda.c in the Linux kernel before 3.9-rc7 does not initialize a certain length variable, which allows local users to obtain sensitive information from kernel stack memory via a crafted recvmsg or recvfrom system call.
(CVE-2013-3228)

The caif_seqpkt_recvmsg function in net/caif/caif_socket.c in the Linux kernel before 3.9-rc7 does not initialize a certain length variable, which allows local users to obtain sensitive information from kernel stack memory via a crafted recvmsg or recvfrom system call. (CVE-2013-3227)

The rfcomm_sock_recvmsg function in net/bluetooth/rfcomm/sock.c in the Linux kernel before 3.9-rc7 does not initialize a certain length variable, which allows local users to obtain sensitive information from kernel stack memory via a crafted recvmsg or recvfrom system call. (CVE-2013-3225)

The bt_sock_recvmsg function in net/bluetooth/af_bluetooth.c in the Linux kernel before 3.9-rc7 does not properly initialize a certain length variable, which allows local users to obtain sensitive information from kernel stack memory via a crafted recvmsg or recvfrom system call. (CVE-2013-3224)

The ax25_recvmsg function in net/ax25/af_ax25.c in the Linux kernel before 3.9-rc7 does not initialize a certain data structure, which allows local users to obtain sensitive information from kernel stack memory via a crafted recvmsg or recvfrom system call. (CVE-2013-3223)

The vcc_recvmsg function in net/atm/common.c in the Linux kernel before 3.9-rc7 does not initialize a certain length variable, which allows local users to obtain sensitive information from kernel stack memory via a crafted recvmsg or recvfrom system call. (CVE-2013-3222)

Integer overflow in the fb_mmap function in drivers/video/fbmem.c in the Linux kernel before 3.8.9, as used in a certain Motorola build of Android 4.1.2 and other products, allows local users to create a read-write memory mapping for the entirety of kernel memory, and consequently gain privileges, via crafted /dev/graphics/fb0 mmap2 system calls, as demonstrated by the Motochopper pwn program.
(CVE-2013-2596)

arch/x86/kernel/cpu/perf_event_intel.c in the Linux kernel before 3.8.9, when the Performance Events Subsystem is enabled, specifies an incorrect bitmask, which allows local users to cause a denial of service (general protection fault and system crash) by attempting to set a reserved bit. (CVE-2013-2146)

The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9 uses an incorrect integer data type, which allows local users to gain privileges via a crafted perf_event_open system call. (CVE-2013-2094)

The ioapic_read_indirect function in virt/kvm/ioapic.c in the Linux kernel through 3.8.4 does not properly handle a certain combination of invalid IOAPIC_REG_SELECT and IOAPIC_REG_WINDOW operations, which allows guest OS users to obtain sensitive information from host OS memory or cause a denial of service (host OS OOPS) via a crafted application. (CVE-2013-1798)

Use-after-free vulnerability in arch/x86/kvm/x86.c in the Linux kernel through 3.8.4 allows guest OS users to cause a denial of service (host OS memory corruption) or possibly have unspecified other impact via a crafted application that triggers use of a guest physical address (GPA) in (1) movable or (2) removable memory during an MSR_KVM_SYSTEM_TIME kvm_set_msr_common operation. (CVE-2013-1797)

The kvm_set_msr_common function in arch/x86/kvm/x86.c in the Linux kernel through 3.8.4 does not ensure a required time_page alignment during an MSR_KVM_SYSTEM_TIME operation, which allows guest OS users to cause a denial of service (buffer overflow and host OS memory corruption) or possibly have unspecified other impact via a crafted application. (CVE-2013-1796)

The do_tkill function in kernel/signal.c in the Linux kernel before 3.8.9 does not initialize a certain data structure, which allows local users to obtain sensitive information from kernel memory via a crafted application that makes a (1) tkill or (2) tgkill system call.
(CVE-2013-2141)

Heap-based buffer overflow in the tg3_read_vpd function in drivers/net/ethernet/broadcom/tg3.c in the Linux kernel before 3.8.6 allows physically proximate attackers to cause a denial of service (system crash) or possibly execute arbitrary code via crafted firmware that specifies a long string in the Vital Product Data (VPD) data structure. (CVE-2013-1929)

The main function in tools/hv/hv_kvp_daemon.c in hypervkvpd, as distributed in the Linux kernel before 3.8-rc1, allows local users to cause a denial of service (daemon exit) via a crafted application that sends a Netlink message. NOTE: this vulnerability exists because of an incorrect fix for CVE-2012-2669. (CVE-2012-5532)

The udf_encode_fh function in fs/udf/namei.c in the Linux kernel before 3.6 does not initialize a certain structure member, which allows local users to obtain sensitive information from kernel heap memory via a crafted application. (CVE-2012-6548)

The isofs_export_encode_fh function in fs/isofs/export.c in the Linux kernel before 3.6 does not initialize a certain structure member, which allows local users to obtain sensitive information from kernel heap memory via a crafted application. (CVE-2012-6549)

net/dcb/dcbnl.c in the Linux kernel before 3.8.4 does not initialize certain structures, which allows local users to obtain sensitive information from kernel stack memory via a crafted application.
(CVE-2013-2634)

The rtnl_fill_ifinfo function in net/core/rtnetlink.c in the Linux kernel before 3.8.4 does not initialize a certain structure member, which allows local users to obtain sensitive information from kernel stack memory via a crafted application. (CVE-2013-2635)

fs/ext3/super.c in the Linux kernel before 3.8.4 uses incorrect arguments to functions in certain circumstances related to printk input, which allows local users to conduct format-string attacks and possibly gain privileges via a crafted application. (CVE-2013-1848)

The flush_signal_handlers function in kernel/signal.c in the Linux kernel before 3.8.4 preserves the value of the sa_restorer field across an exec operation, which makes it easier for local users to bypass the ASLR protection mechanism via a crafted application containing a sigaction system call. (CVE-2013-0914)

Heap-based buffer overflow in the wdm_in_callback function in drivers/usb/class/cdc-wdm.c in the Linux kernel before 3.8.4 allows physically proximate attackers to cause a denial of service (system crash) or possibly execute arbitrary code via a crafted cdc-wdm USB device. (CVE-2013-1860)

Race condition in the install_user_keyrings function in security/keys/process_keys.c in the Linux kernel before 3.8.3 allows local users to cause a denial of service (NULL pointer dereference and system crash) via crafted keyctl system calls that trigger keyring operations in simultaneous threads. (CVE-2013-1792)

The report API in the crypto user configuration API in the Linux kernel through 3.8.2 uses an incorrect C library function for copying strings, which allows local users to obtain sensitive information from kernel stack memory by leveraging the CAP_NET_ADMIN capability.
(CVE-2013-2546)

The crypto_report_one function in crypto/crypto_user.c in the report API in the crypto user configuration API in the Linux kernel through 3.8.2 does not initialize certain structure members, which allows local users to obtain sensitive information from kernel heap memory by leveraging the CAP_NET_ADMIN capability. (CVE-2013-2547)

The crypto_report_one function in crypto/crypto_user.c in the report API in the crypto user configuration API in the Linux kernel through 3.8.2 uses an incorrect length value during a copy operation, which allows local users to obtain sensitive information from kernel memory by leveraging the CAP_NET_ADMIN capability. (CVE-2013-2548)

The translate_desc function in drivers/vhost/vhost.c in the Linux kernel before 3.7 does not properly handle cross-region descriptors, which allows guest OS users to obtain host OS privileges by leveraging KVM guest OS privileges. (CVE-2013-0311)

Array index error in the __sock_diag_rcv_msg function in net/core/sock_diag.c in the Linux kernel before 3.7.10 allows local users to gain privileges via a large family value in a Netlink message. (CVE-2013-1763)

The __skb_recv_datagram function in net/core/datagram.c in the Linux kernel before 3.8 does not properly handle the MSG_PEEK flag with zero-length data, which allows local users to cause a denial of service (infinite loop and system hang) via a crafted application.
(CVE-2013-0290)

Use-after-free vulnerability in the shmem_remount_fs function in mm/shmem.c in the Linux kernel before 3.7.10 allows local users to gain privileges or cause a denial of service (system crash) by remounting a tmpfs filesystem without specifying a required mpol (aka mempolicy) mount option. (CVE-2013-1767)

The xen_iret function in arch/x86/xen/xen-asm_32.S in the Linux kernel before 3.7.9 on 32-bit Xen paravirt_ops platforms does not properly handle an invalid value in the DS segment register, which allows guest OS users to gain guest OS privileges via a crafted application.
(CVE-2013-0228)

Memory leak in drivers/net/xen-netback/netback.c in the Xen netback functionality in the Linux kernel before 3.7.8 allows guest OS users to cause a denial of service (memory consumption) by triggering certain error conditions. (CVE-2013-0217)

The Xen netback functionality in the Linux kernel before 3.7.8 allows guest OS users to cause a denial of service (loop) by triggering ring pointer corruption. (CVE-2013-0216)

The __tun_chr_ioctl function in drivers/net/tun.c in the Linux kernel before 3.6 does not initialize a certain structure, which allows local users to obtain sensitive information from kernel stack memory via a crafted application. (CVE-2012-6547)

The updated packages provides a solution for these security issues.

A flaw was discovered in the Linux kernel's perf_events interface. A local user could exploit this flaw to escalate privileges on the system.

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

New Linux kernel packages are available for Slackware 13.37 and 14.0 to fix a security issue.

This update to the SUSE Linux Enterprise 11 SP2 kernel fixes the following critical security issue :

  - A bounds checking problem in the perf systemcall could     be used by local attackers to crash the kernel or     execute code in kernel context. (CVE-2013-2094)

Updated kernel packages that fix one security issue are now available for Red Hat Enterprise Linux 6.1 Extended Update Support.

The Red Hat Security Response Team has rated this update as having important security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section.

The kernel packages contain the Linux kernel, the core of any Linux operating system.

This update fixes the following security issue :

* It was found that the Red Hat Enterprise Linux 6.1 kernel update (RHSA-2011:0542) introduced an integer conversion issue in the Linux kernel's Performance Events implementation. This led to a user-supplied index into the perf_swevent_enabled array not being validated properly, resulting in out-of-bounds kernel memory access. A local, unprivileged user could use this flaw to escalate their privileges. (CVE-2013-2094, Important)

A public exploit that affects Red Hat Enterprise Linux 6 is available.

Refer to Red Hat Knowledge Solution 373743, linked to in the References, for further information and mitigation instructions for users who are unable to immediately apply this update.

Users should upgrade to these updated packages, which contain a backported patch to correct this issue. The system must be rebooted for this update to take effect.

Updated kernel packages that fix one security issue are now available for Red Hat Enterprise Linux 6.2 Extended Update Support.

The Red Hat Security Response Team has rated this update as having important security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section.

The kernel packages contain the Linux kernel, the core of any Linux operating system.

This update fixes the following security issue :

* It was found that the Red Hat Enterprise Linux 6.1 kernel update (RHSA-2011:0542) introduced an integer conversion issue in the Linux kernel's Performance Events implementation. This led to a user-supplied index into the perf_swevent_enabled array not being validated properly, resulting in out-of-bounds kernel memory access. A local, unprivileged user could use this flaw to escalate their privileges. (CVE-2013-2094, Important)

A public exploit that affects Red Hat Enterprise Linux 6 is available.

Refer to Red Hat Knowledge Solution 373743, linked to in the References, for further information and mitigation instructions for users who are unable to immediately apply this update.

Users should upgrade to these updated packages, which contain a backported patch to correct this issue. The system must be rebooted for this update to take effect.

Updated kernel packages that fix one security issue are now available for Red Hat Enterprise Linux 6.

The Red Hat Security Response Team has rated this update as having important security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section.

The kernel packages contain the Linux kernel, the core of any Linux operating system.

This update fixes the following security issue :

* It was found that the Red Hat Enterprise Linux 6.1 kernel update (RHSA-2011:0542) introduced an integer conversion issue in the Linux kernel's Performance Events implementation. This led to a user-supplied index into the perf_swevent_enabled array not being validated properly, resulting in out-of-bounds kernel memory access. A local, unprivileged user could use this flaw to escalate their privileges. (CVE-2013-2094, Important)

A public exploit that affects Red Hat Enterprise Linux 6 is available.

Refer to Red Hat Knowledge Solution 373743, linked to in the References, for further information and mitigation instructions for users who are unable to immediately apply this update.

Users should upgrade to these updated packages, which contain a backported patch to correct this issue. The system must be rebooted for this update to take effect.

This update fixes the following security issue :

  - It was found that the Scientific Linux 6.1 kernel update     (SLSA-2011:0542) introduced an integer conversion issue     in the Linux kernel's Performance Events implementation.
    This led to a user-supplied index into the     perf_swevent_enabled array not being validated properly,     resulting in out-of-bounds kernel memory access. A     local, unprivileged user could use this flaw to escalate     their privileges. (CVE-2013-2094, Important)

A public exploit that affects Scientific Linux 6 is available.

Refer to Red Hat Knowledge Solution 373743 for further information and mitigation instructions for users who are unable to immediately apply this update.

The system must be rebooted for this update to take effect.

Several vulnerabilities have been discovered in the Linux kernel that may lead to a denial of service, information leak or privilege escalation. The Common Vulnerabilities and Exposures project identifies the following problems :

  - CVE-2013-0160     vladz reported a timing leak with the /dev/ptmx     character device. A local user could use this to     determine sensitive information such as password length.

  - CVE-2013-1796     Andrew Honig of Google reported an issue in the KVM     subsystem. A user in a guest operating system could     corrupt kernel memory, resulting in a denial of service.

  - CVE-2013-1929     Oded Horovitz and Brad Spengler reported an issue in the     device driver for Broadcom Tigon3 based gigabit     Ethernet. Users with the ability to attach untrusted     devices can create an overflow condition, resulting in a     denial of service or elevated privileges.

  - CVE-2013-1979     Andy Lutomirski reported an issue in the socket level     control message processing subsystem. Local users may be     able to gain eleveated privileges.

  - CVE-2013-2015     Theodore Ts'o provided a fix for an issue in the ext4     filesystem. Local users with the ability to mount a     specially crafted filesystem can cause a denial of     service (infinite loop).

  - CVE-2013-2094     Tommie Rantala discovered an issue in the perf     subsystem. An out-of-bounds access vulnerability allows     local users to gain elevated privileges.

  - CVE-2013-3076     Mathias Krause discovered an issue in the userspace     interface for hash algorithms. Local users can gain     access to sensitive kernel memory.

  - CVE-2013-3222     Mathias Krause discovered an issue in the Asynchronous     Transfer Mode (ATM) protocol support. Local users can     gain access to sensitive kernel memory.

  - CVE-2013-3223     Mathias Krause discovered an issue in the Amateur Radio     AX.25 protocol support. Local users can gain access to     sensitive kernel memory.

  - CVE-2013-3224     Mathias Krause discovered an issue in the Bluetooth     subsystem. Local users can gain access to sensitive     kernel memory.

  - CVE-2013-3225     Mathias Krause discovered an issue in the Bluetooth     RFCOMM protocol support. Local users can gain access to     sensitive kernel memory.

  - CVE-2013-3227     Mathias Krause discovered an issue in the Communication     CPU to Application CPU Interface (CAIF). Local users can     gain access to sensitive kernel memory.

  - CVE-2013-3228     Mathias Krause discovered an issue in the IrDA     (infrared) subsystem support. Local users can gain     access to sensitive kernel memory.

  - CVE-2013-3229     Mathias Krause discovered an issue in the IUCV support     on s390 systems. Local users can gain access to     sensitive kernel memory.

  - CVE-2013-3231     Mathias Krause discovered an issue in the ANSI/IEEE     802.2 LLC type 2 protocol support. Local users can gain     access to sensitive kernel memory.

  - CVE-2013-3234     Mathias Krause discovered an issue in the Amateur Radio     X.25 PLP (Rose) protocol support. Local users can gain     access to sensitive kernel memory.

  - CVE-2013-3235     Mathias Krause discovered an issue in the Transparent     Inter Process Communication (TIPC) protocol support.
    Local users can gain access to sensitive kernel memory.

  - CVE-2013-3301     Namhyung Kim reported an issue in the tracing subsystem.
    A privileged local user could cause a denial of service     (system crash). This vulnerabililty is not applicable to     Debian systems by default.

An flaw was discovered in the Linux kernel's perf_events interface. A local user could exploit this flaw to escalate privileges on the system.

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

ID	Name	Product	Family	Severity
78957	RHEL 6 : kernel (RHSA-2013:0832)	Nessus	Red Hat Local Security Checks	high
78150	F5 Networks BIG-IP : Linux kernel vulnerability (K14445)	Nessus	F5 Networks Local Security Checks	high
76660	RHEL 6 : MRG (RHSA-2013:0829)	Nessus	Red Hat Local Security Checks	high
75048	openSUSE Security Update : kernel (openSUSE-SU-2013:1042-1)	Nessus	SuSE Local Security Checks	high
75018	openSUSE Security Update : kernel (openSUSE-SU-2013:0847-1)	Nessus	SuSE Local Security Checks	high
75016	openSUSE Security Update : kernel (openSUSE-SU-2013:0951-1)	Nessus	SuSE Local Security Checks	high
73126	Amazon Linux AMI : kernel Privilege Escalation (ALAS-2013-190)	Nessus	Amazon Linux Local Security Checks	high
69942	Oracle Linux 5 / 6 : Unbreakable Enterprise Kernel (ELSA-2013-2546)	Nessus	Oracle Linux Local Security Checks	high
68855	Oracle Linux 5 / 6 : Unbreakable Enterprise kernel Security (ELSA-2013-2525)	Nessus	Oracle Linux Local Security Checks	high
68854	Oracle Linux 5 / 6 : Unbreakable Enterprise kernel Security (ELSA-2013-2524)	Nessus	Oracle Linux Local Security Checks	high
68823	Oracle Linux 6 : kernel (ELSA-2013-0830)	Nessus	Oracle Linux Local Security Checks	high
66975	Mandriva Linux Security Advisory : kernel (MDVSA-2013:176)	Nessus	Mandriva Local Security Checks	high
66716	Ubuntu 12.04 LTS : linux-lts-raring vulnerability (USN-1849-1)	Nessus	Ubuntu Local Security Checks	high
66638	Slackware 13.37 / 14.0 : kernel (SSA:2013-140-01)	Nessus	Slackware Local Security Checks	high
66539	SuSE 11.2 Security Update : Linux Kernel (SAT Patch Numbers 7723 / 7726 / 7727)	Nessus	SuSE Local Security Checks	high
66525	RHEL 6 : kernel (RHSA-2013:0841)	Nessus	Red Hat Local Security Checks	high
66524	RHEL 6 : kernel (RHSA-2013:0840)	Nessus	Red Hat Local Security Checks	high
66521	CentOS 6 : kernel (CESA-2013:0830)	Nessus	CentOS Local Security Checks	high
66490	Scientific Linux Security Update : kernel on SL6.x i386/x86_64 (20130516)	Nessus	Scientific Linux Local Security Checks	high
66488	RHEL 6 : kernel (RHSA-2013:0830)	Nessus	Red Hat Local Security Checks	high
66486	Debian DSA-2669-1 : linux - privilege escalation/denial of service/information leak	Nessus	Debian Local Security Checks	high
66471	Ubuntu 12.04 LTS : linux-lts-quantal vulnerability (USN-1828-1)	Nessus	Ubuntu Local Security Checks	high
66470	Ubuntu 13.04 : linux vulnerability (USN-1827-1)	Nessus	Ubuntu Local Security Checks	high
66469	Ubuntu 12.10 : linux vulnerability (USN-1826-1)	Nessus	Ubuntu Local Security Checks	high
66468	Ubuntu 12.04 LTS : linux vulnerability (USN-1825-1)	Nessus	Ubuntu Local Security Checks	high

Detections

Analytics

CVE-2013-2094

high

Tenable Plugins

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