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.

This security upload has been prepared in cooperation of the Debian Kernel, Security and LTS Teams and features the upstream stable release 2.6.32.64 (see https://lkml.org/lkml/2014/11/23/181 for more information for that). It fixes the CVEs described below.

Note: if you are using the openvz flavors, please consider three things: a.) we haven't got any feedback on them (while we have for all other flavors) b.) so do your test before deploying them and c.) once you have done so, please give feedback to debian-lts@lists.debian.org. 

If you are not using openvz flavors, please still consider b+c :-)

CVE-2012-6657

Fix the sock_setsockopt function to prevent local users from being able to cause a denial of service (system crash) attack.

CVE-2013-0228

Fix a XEN priviledge escalation, which allowed guest OS users to gain guest OS priviledges.

CVE-2013-7266

Fix the mISDN_sock_recvmsg function to prevent local users from obtaining sensitive information from kernel memory.

CVE-2014-4157

MIPS platform: prevent local users from bypassing intended PR_SET_SECCOMP restrictions.

CVE-2014-4508

Prevent local users from causing a denial of service (OOPS and system crash) when syscall auditing is enabled .

CVE-2014-4653 CVE-2014-4654 CVE-2014-4655

Fix the ALSA control implementation to prevent local users from causing a denial of service attack and from obtaining sensitive information from kernel memory.

CVE-2014-4943

Fix PPPoL2TP feature to prevent local users to from gaining privileges.

CVE-2014-5077

Prevent remote attackers from causing a denial of service attack involving SCTP.

CVE-2014-5471 CVE-2014-5472

Fix the parse_rock_ridge_inode_internal function to prevent local users from causing a denial of service attack via a crafted iso9660 images.

CVE-2014-9090

Fix the do_double_fault function to prevent local users from causing a denial of service (panic) attack.

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

The remote OracleVM system is missing necessary patches to address critical security updates :

  - x86/xen: don't assume %ds is usable in xen_iret for     32-bit PVOPS. (Chuck Anderson) [Orabug: 16325076]     [CVE-2013-0228 XSA-42 CVE-2013-0190]

The remote Oracle Linux 5 / 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2013-2507 advisory.

    - vhost: fix length for cross region descriptor (Michael S. Tsirkin) [Orabug:
    16387183] {CVE-2013-0311}
    - x86/xen: don't assume %ds is usable in xen_iret for 32-bit PVOPS. (Jan     Beulich) {CVE-2013-0228}
    - kmod: make __request_module() killable (Oleg Nesterov) [Orabug: 16286305]     {CVE-2012-4398}
    - kmod: introduce call_modprobe() helper (Oleg Nesterov) [Orabug: 16286305]     {CVE-2012-4398}
    - usermodehelper: implement UMH_KILLABLE (Oleg Nesterov) [Orabug: 16286305]     {CVE-2012-4398}
    - usermodehelper: introduce umh_complete(sub_info) (Oleg Nesterov) [Orabug:
    16286305] {CVE-2012-4398}
    - KVM: x86: invalid opcode oops on SET_SREGS with OSXSAVE bit set     (CVE-2012-4461) (Jerry Snitselaar) [Orabug: 16286290] {CVE-2012-4461}
    - exec: do not leave bprm->interp on stack (Kees Cook) [Orabug: 16286267]     {CVE-2012-4530}
    - exec: use -ELOOP for max recursion depth (Kees Cook) [Orabug: 16286267]     {CVE-2012-4530}
    - xen-pciback: rate limit error messages from xen_pcibk_enable_msi{,x}() (Jan     Beulich) [Orabug: 16243736] {CVE-2013-0231}
    - netback: correct netbk_tx_err to handle wrap around. (Ian Campbell) [Orabug:
    16243309] {CVE-2013-0216 CVE-2013-0217}
    - xen/netback: free already allocated memory on failure in     xen_netbk_get_requests (Ian Campbell) [Orabug: 16243309] {CVE-2013-0216     CVE-2013-0217}
    - xen/netback: don't leak pages on failure in xen_netbk_tx_check_gop. (Ian     Campbell) [Orabug: 16243309] {CVE-2013-0216 CVE-2013-0217}
    - xen: Fix stack corruption in xen_failsafe_callback for 32bit PVOPS guests.
    (Andrew Cooper) {CVE-2013-0190}
    - Fix length of buffer copied in __nfs4_get_acl_uncached (Sachin Prabhu) [Bug-     db: 14798] {CVE-2012-2375}
    - Avoid reading past buffer when calling GETACL (Sachin Prabhu) [Bug-db: 14798]     {CVE-2012-2375}
    - Avoid beyond bounds copy while caching ACL (Sachin Prabhu) [Bug-db: 14798]     {CVE-2012-2375}

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues 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 multiple vulnerabilities as referenced in the ELSA-2013-0630 advisory.

    - [kernel] utrace: ensure arch_ptrace/ptrace_request can never race with SIGKILL (Oleg Nesterov) [912073     912074] {CVE-2013-0871}
    - [x86] msr: Add capabilities check (Nikola Pajkovsky) [908698 908699] {CVE-2013-0268}
    - [x86] msr: Remove incorrect, duplicated code in the MSR driver (Nikola Pajkovsky) [908698 908699]     {CVE-2013-0268}
    - [virt] xen: dont assume ds is usable in xen_iret for 32-bit PVOPS (Andrew Jones) [906310 906311]     {CVE-2013-0228}

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues 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.

Mathias Krause discovered an information leak in the Linux kernel's getsockname implementation for Logical Link Layer (llc) sockets. A local user could exploit this flaw to examine some of the kernel's stack memory. (CVE-2012-6542)

Mathias Krause discovered information leaks in the Linux kernel's Bluetooth Logical Link Control and Adaptation Protocol (L2CAP) implementation. A local user could exploit these flaws to examine some of the kernel's stack memory. (CVE-2012-6544)

Mathias Krause discovered information leaks in the Linux kernel's Bluetooth RFCOMM protocol implementation. A local user could exploit these flaws to examine parts of kernel memory. (CVE-2012-6545)

Mathias Krause discovered information leaks in the Linux kernel's Asynchronous Transfer Mode (ATM) networking stack. A local user could exploit these flaws to examine some parts of kernel memory.
(CVE-2012-6546)

Mathias Krause discovered an information leak in the Linux kernel's UDF file system implementation. A local user could exploit this flaw to examine some of the kernel's heap memory. (CVE-2012-6548)

Andrew Jones discovered a flaw with the xen_iret function in Linux kernel's Xen virtualizeation. In the 32-bit Xen paravirt platform an unprivileged guest OS user could exploit this flaw to cause a denial of service (crash the system) or gain guest OS privilege.
(CVE-2013-0228)

An information leak was discovered in the Linux kernel's Bluetooth stack when HIDP (Human Interface Device Protocol) support is enabled.
A local unprivileged user could exploit this flaw to cause an information leak from the kernel. (CVE-2013-0349)

A flaw was discovered in the Edgeort USB serial converter driver when the device is disconnected while it is in use. A local user could exploit this flaw to cause a denial of service (system crash).
(CVE-2013-1774)

Andrew Honig discovered a flaw in guest OS time updates in the Linux kernel's KVM (Kernel-based Virtual Machine). A privileged guest user could exploit this flaw to cause a denial of service (crash host system) or potential escalate privilege to the host kernel level.
(CVE-2013-1796).

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.

Andrew Jones discovered a flaw with the xen_iret function in Linux kernel's Xen virtualizeation. In the 32-bit Xen paravirt platform an unprivileged guest OS user could exploit this flaw to cause a denial of service (crash the system) or gain guest OS privilege.
(CVE-2013-0228)

Emese Revfy discovered that in the Linux kernel signal handlers could leak address information across an exec, making it possible to by pass ASLR (Address Space Layout Randomization). A local user could use this flaw to by pass ASLR to reliably deliver an exploit payload that would otherwise be stopped (by ASLR). (CVE-2013-0914)

A memory use after free error was discover in the Linux kernel's tmpfs filesystem. A local user could exploit this flaw to gain privileges or cause a denial of service (system crash). (CVE-2013-1767)

Mateusz Guzik discovered a race in the Linux kernel's keyring. A local user could exploit this flaw to cause a denial of service (system crash). (CVE-2013-1792)

Mathias Krause discovered a memory leak in the Linux kernel's crypto report API. A local user with CAP_NET_ADMIN could exploit this leak to examine some of the kernel's stack memory. (CVE-2013-2546)

Mathias Krause discovered a memory leak in the Linux kernel's crypto report API. A local user with CAP_NET_ADMIN could exploit this leak to examine some of the kernel's heap memory. (CVE-2013-2547)

Mathias Krause discovered information leaks in the Linux kernel's crypto algorithm report API. A local user could exploit these flaws to leak kernel stack and heap memory contents. (CVE-2013-2548).

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.

Andrew Cooper of Citrix reported a Xen stack corruption in the Linux kernel. An unprivileged user in a 32bit PVOPS guest can cause the guest kernel to crash, or operate erroneously. (CVE-2013-0190)

A failure to validate input was discovered in the Linux kernel's Xen netback (network backend) driver. A user in a guest OS may exploit this flaw to cause a denial of service to the guest OS and other guest domains. (CVE-2013-0216)

A memory leak was discovered in the Linux kernel's Xen netback (network backend) driver. A user in a guest OS could trigger this flaw to cause a denial of service on the system. (CVE-2013-0217)

Andrew Jones discovered a flaw with the xen_iret function in Linux kernel's Xen virtualizeation. In the 32-bit Xen paravirt platform an unprivileged guest OS user could exploit this flaw to cause a denial of service (crash the system) or gain guest OS privilege.
(CVE-2013-0228)

A flaw was discovered in the Linux kernel Xen PCI backend driver. If a PCI device is assigned to the guest OS, the guest OS could exploit this flaw to cause a denial of service on the host. (CVE-2013-0231)

A flaw was reported in the permission checks done by the Linux kernel for /dev/cpu/*/msr. A local root user with all capabilities dropped could exploit this flaw to execute code with full root capabilities.
(CVE-2013-0268)

A flaw was discovered in the Linux kernel's vhost driver used to accelerate guest networking in KVM based virtual machines. A privileged guest user could exploit this flaw to crash the host system. (CVE-2013-0311)

A flaw was discovered in the Extended Verification Module (EVM) of the Linux kernel. An unprivileged local user code exploit this flaw to cause a denial of service (system crash). (CVE-2013-0313)

An information leak was discovered in the Linux kernel's Bluetooth stack when HIDP (Human Interface Device Protocol) support is enabled.
A local unprivileged user could exploit this flaw to cause an information leak from the kernel. (CVE-2013-0349)

A flaw was discovered in the Edgeort USB serial converter driver when the device is disconnected while it is in use. A local user could exploit this flaw to cause a denial of service (system crash).
(CVE-2013-1774).

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.

This update fixes the following security issues :

  - A flaw was found in the way the xen_iret() function in     the Linux kernel used the DS (the CPU's Data Segment)     register. A local, unprivileged user in a 32-bit,     para-virtualized Xen hypervisor guest could use this     flaw to crash the guest or, potentially, escalate their     privileges. (CVE-2013-0228, Important)

  - A flaw was found in the way file permission checks for     the '/dev/cpu/[x]/msr' files were performed in     restricted root environments (for example, when using a     capability-based security model). A local user with the     ability to write to these files could use this flaw to     escalate their privileges to kernel level, for example,     by writing to the SYSENTER_EIP_MSR register.
    (CVE-2013-0268, Important)

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

Updated kernel packages that fix two security issues and several bugs are now available for Red Hat Enterprise Linux 6.

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.

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

This update fixes the following security issues :

* A flaw was found in the way the xen_iret() function in the Linux kernel used the DS (the CPU's Data Segment) register. A local, unprivileged user in a 32-bit, para-virtualized Xen hypervisor guest could use this flaw to crash the guest or, potentially, escalate their privileges. (CVE-2013-0228, Important)

* A flaw was found in the way file permission checks for the '/dev/cpu/[x]/msr' files were performed in restricted root environments (for example, when using a capability-based security model). A local user with the ability to write to these files could use this flaw to escalate their privileges to kernel level, for example, by writing to the SYSENTER_EIP_MSR register. (CVE-2013-0268, Important)

The CVE-2013-0228 issue was discovered by Andrew Jones of Red Hat.

This update also fixes several bugs. Documentation for these changes will be available shortly from the Technical Notes document linked to in the References section.

Users should upgrade to these updated packages, which contain backported patches to correct these issues, and fix the bugs noted in the Technical Notes. The system must be rebooted for this update to take effect.

A failure to validate input was discovered in the Linux kernel's Xen netback (network backend) driver. A user in a guest OS may exploit this flaw to cause a denial of service to the guest OS and other guest domains. (CVE-2013-0216)

A memory leak was discovered in the Linux kernel's Xen netback (network backend) driver. A user in a guest OS could trigger this flaw to cause a denial of service on the system. (CVE-2013-0217)

Andrew Jones discovered a flaw with the xen_iret function in Linux kernel's Xen virtualizeation. In the 32-bit Xen paravirt platform an unprivileged guest OS user could exploit this flaw to cause a denial of service (crash the system) or gain guest OS privilege.
(CVE-2013-0228)

A flaw was reported in the permission checks done by the Linux kernel for /dev/cpu/*/msr. A local root user with all capabilities dropped could exploit this flaw to execute code with full root capabilities.
(CVE-2013-0268)

A flaw was discovered in the Linux kernel's vhost driver used to accelerate guest networking in KVM based virtual machines. A privileged guest user could exploit this flaw to crash the host system. (CVE-2013-0311)

An information leak was discovered in the Linux kernel's Bluetooth stack when HIDP (Human Interface Device Protocol) support is enabled.
A local unprivileged user could exploit this flaw to cause an information leak from the kernel. (CVE-2013-0349)

A flaw was discovered on the Linux kernel's VFAT filesystem driver when a disk is mounted with the utf8 option (this is the default on Ubuntu). On a system where disks/images can be auto-mounted or a FAT filesystem is mounted an unprivileged user can exploit the flaw to gain root privileges. (CVE-2013-1773).

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.

The remote Redhat Enterprise Linux 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2013:0630 advisory.

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

    This update fixes the following security issues:

    * A flaw was found in the way the xen_iret() function in the Linux kernel     used the DS (the CPU's Data Segment) register. A local, unprivileged user     in a 32-bit, para-virtualized Xen hypervisor guest could use this flaw to     crash the guest or, potentially, escalate their privileges. (CVE-2013-0228,     Important)

    * A flaw was found in the way file permission checks for the     /dev/cpu/[x]/msr files were performed in restricted root environments     (for example, when using a capability-based security model). A local user     with the ability to write to these files could use this flaw to escalate     their privileges to kernel level, for example, by writing to the     SYSENTER_EIP_MSR register. (CVE-2013-0268, Important)

    The CVE-2013-0228 issue was discovered by Andrew Jones of Red Hat.

    This update also fixes several bugs. Documentation for these changes will     be available shortly from the Technical Notes document linked to in the     References section.

    Users should upgrade to these updated packages, which contain backported     patches to correct these issues, and fix the bugs noted in the Technical     Notes. The system must be rebooted for this update to take effect.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

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

Upstream stable kernel 3.7.9 contains a number of bug fixes across the tree, as well as important security fixes.

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

ID	Name	Product	Family	Severity
82087	Debian DLA-103-1 : linux-2.6 security update	Nessus	Debian Local Security Checks	medium
79501	OracleVM 3.2 : kernel-uek (OVMSA-2013-0015)	Nessus	OracleVM Local Security Checks	medium
68847	Oracle Linux 5 / 6 : Unbreakable Enterprise kernel (ELSA-2013-2507)	Nessus	Oracle Linux Local Security Checks	high
68789	Oracle Linux 6 : kernel (ELSA-2013-0630)	Nessus	Oracle Linux Local Security Checks	high
66975	Mandriva Linux Security Advisory : kernel (MDVSA-2013:176)	Nessus	Mandriva Local Security Checks	high
66232	Ubuntu 10.04 LTS : linux-ec2 vulnerabilities (USN-1808-1)	Nessus	Ubuntu Local Security Checks	medium
66171	Ubuntu 10.04 LTS : linux vulnerabilities (USN-1805-1)	Nessus	Ubuntu Local Security Checks	medium
65871	Ubuntu 12.10 : linux vulnerabilities (USN-1796-1)	Nessus	Ubuntu Local Security Checks	medium
65870	Ubuntu 12.04 LTS : linux-lts-quantal vulnerabilities (USN-1795-1)	Nessus	Ubuntu Local Security Checks	medium
65609	Ubuntu 12.04 LTS : linux vulnerabilities (USN-1767-1)	Nessus	Ubuntu Local Security Checks	medium
65564	Scientific Linux Security Update : kernel on SL6.x i386/x86_64 (20130312)	Nessus	Scientific Linux Local Security Checks	medium
65554	CentOS 6 : kernel (CESA-2013:0630)	Nessus	CentOS Local Security Checks	medium
65252	Ubuntu 10.04 LTS : linux-lts-backport-oneiric vulnerabilities (USN-1760-1)	Nessus	Ubuntu Local Security Checks	medium
65237	RHEL 6 : kernel (RHSA-2013:0630)	Nessus	Red Hat Local Security Checks	high
65077	Ubuntu 11.10 : linux vulnerabilities (USN-1756-1)	Nessus	Ubuntu Local Security Checks	medium
64872	Fedora 17 : kernel-3.7.9-101.fc17 (2013-2597)	Nessus	Fedora Local Security Checks	medium

Detections

Analytics

CVE-2013-0228

high

Tenable Plugins

medium

medium

high

high

high

medium

medium

medium

medium

medium

medium

medium

medium

high

medium

medium