This is an incremental update over 4.4.2-300 which contains two fixes fix for AMD IOMMU warnings use after free in USB ---- The 4.4.2 update contains a number of important updates across the kernel tree.

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.

Ralf Spenneberg discovered that the usbvision driver in the Linux kernel did not properly sanity check the interfaces and endpoints reported by the device. An attacker with physical access could cause a denial of service (system crash). (CVE-2015-7833)

Venkatesh Pottem discovered a use-after-free vulnerability in the Linux kernel's CXGB3 driver. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code.
(CVE-2015-8812)

Xiaofei Rex Guo discovered a timing side channel vulnerability in the Linux Extended Verification Module (EVM). An attacker could use this to affect system integrity. (CVE-2016-2085)

It was discovered that the extended Berkeley Packet Filter (eBPF) implementation in the Linux kernel did not correctly compute branch offsets for backward jumps after ctx expansion. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2016-2383)

David Herrmann discovered that the Linux kernel incorrectly accounted file descriptors to the original opener for in-flight file descriptors sent over a unix domain socket. A local attacker could use this to cause a denial of service (resource exhaustion). (CVE-2016-2550)

It was discovered that the Linux kernel did not enforce limits on the amount of data allocated to buffer pipes. A local attacker could use this to cause a denial of service (resource exhaustion).
(CVE-2016-2847).

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 Ubuntu 14.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-2947-2 advisory.

    Ralf Spenneberg discovered that the usbvision driver in the Linux kernel did not properly validate the     interfaces and endpoints reported by the device. An attacker with physical access could cause a denial of     service (system crash). (CVE-2015-7833)

    Venkatesh Pottem discovered a use-after-free vulnerability in the Linux kernel's CXGB3 driver. A local     attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code.
    (CVE-2015-8812)

    Xiaofei Rex Guo discovered a timing side channel vulnerability in the Linux Extended Verification Module     (EVM). An attacker could use this to affect system integrity. (CVE-2016-2085)

    It was discovered that the extended Berkeley Packet Filter (eBPF) implementation in the Linux kernel did     not correctly compute branch offsets for backward jumps after ctx expansion. A local attacker could use     this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2016-2383)

    David Herrmann discovered that the Linux kernel incorrectly accounted file descriptors to the original     opener for in-flight file descriptors sent over a unix domain socket. A local attacker could use this to     cause a denial of service (resource exhaustion). (CVE-2016-2550)

    It was discovered that the Linux kernel did not enforce limits on the amount of data allocated to buffer     pipes. A local attacker could use this to cause a denial of service (resource exhaustion). (CVE-2016-2847)

Tenable has extracted the preceding description block directly from the Ubuntu 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 openSUSE Leap 42.1 kernel was updated to 4.1.20 to receive various security and bugfixes.

The following security bugs were fixed :

  - CVE-2015-1339: A memory leak in cuse could be used to     exhaust kernel memory. (bsc#969356).

  - CVE-2015-7799: The slhc_init 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 951638).

  - CVE-2015-7872: The key_gc_unused_keys 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-2015-7884: The vivid_fb_ioctl function in     drivers/media/platform/vivid/vivid-osd.c in the Linux     kernel did not initialize a certain structure member,     which allowed local users to obtain sensitive     information from kernel memory via a crafted application     (bnc#951626).

  - 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-2015-8709: kernel/ptrace.c in the Linux kernel     mishandled uid and gid mappings, which allowed local     users to gain privileges by establishing a user     namespace, waiting for a root process to enter that     namespace with an unsafe uid or gid, and then using the     ptrace system call. NOTE: the vendor states 'there is no     kernel bug here (bnc#959709).

  - CVE-2015-8767: net/sctp/sm_sideeffect.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 sctp_accept     call. (bsc#961509)

  - CVE-2015-8785: The fuse_fill_write_pages 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-2015-8787: The nf_nat_redirect_ipv4 function in     net/netfilter/nf_nat_redirect.c in the Linux kernel     allowed remote attackers to cause a denial of service     (NULL pointer dereference and system crash) or possibly     have unspecified other impact by sending certain IPv4     packets to an incompletely configured interface, a     related issue to CVE-2003-1604 (bnc#963931).

  - CVE-2015-8812: A flaw was found in the CXGB3 kernel     driver when the network was considered congested. The     kernel would incorrectly misinterpret the congestion as     an error condition and incorrectly free/clean up the     skb. When the device would then send the skb's queued,     these structures would be referenced and may panic the     system or allow an attacker to escalate privileges in a     use-after-free scenario. (bsc#966437).

  - CVE-2016-0723: Race condition in the tty_ioctl function     in drivers/tty/tty_io.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-2016-2069: When Linux invalidated a paging structure     that is not in use locally, it could, in principle, race     against another CPU that is switching to a process that     uses the paging structure in question. (bsc#963767)

  - CVE-2016-2184: A malicious USB device could cause a     kernel crash in the alsa usb-audio driver. (bsc#971125)

  - CVE-2016-2383: Incorrect branch fixups for eBPF allow     arbitrary read of kernel memory. (bsc#966684)

  - CVE-2016-2384: A malicious USB device could cause a     kernel crash in the alsa usb-audio driver. (bsc#966693)

The following non-security bugs were fixed :

  - alsa: hda - Apply clock gate workaround to Skylake, too     (bsc#966137).

  - alsa: hda - disable dynamic clock gating on Broxton     before reset (bsc#966137).

  - alsa: hda - Fix playback noise with 24/32 bit sample     size on BXT (bsc#966137).

  - alsa: seq: Fix double port list deletion (bsc#968018).

  - alsa: seq: Fix leak of pool buffer at concurrent writes     (bsc#968018).

  - alsa: timer: Fix race between stop and interrupt     (bsc#968018).

  - alsa: timer: Fix wrong instance passed to slave     callbacks (bsc#968018).

  - arm64: Add workaround for Cavium erratum 27456.

  - arm64: Backport arm64 patches from SLE12-SP1-ARM

  - btrfs: teach backref walking about backrefs with     underflowed (bsc#966259).

  - cgroup kabi fix for 4.1.19.

  - config: Disable CONFIG_DDR. CONFIG_DDR is selected     automatically by drivers which need it.

  - config: Disable MFD_TPS65218 The TPS65218 is a power     management IC for 32-bit ARM systems.

  - config: Modularize NF_REJECT_IPV4/V6 There is no reason     why these helper modules should be built-in when the     rest of netfilter is built as modules.

  - config: Update x86 config files: Enable Intel RAPL This     driver is useful when power caping is needed. It was     enabled in the SLE kernel 2 years ago.

  - Delete patches.fixes/bridge-module-get-put.patch. As     discussed in     http://lists.opensuse.org/opensuse-kernel/2015-11/msg000     46.html

  - drm/i915: Fix double unref in intelfb_alloc failure path     (boo#962866, boo#966179).

  - drm/i915: Fix failure paths around initial fbdev     allocation (boo#962866, boo#966179).

  - drm/i915: Pin the ifbdev for the info->system_base GGTT     mmapping (boo#962866, boo#966179).

  - e1000e: Avoid divide by zero error (bsc#965125).

  - e1000e: fix division by zero on jumbo MTUs (bsc#965125).

  - e1000e: fix systim issues (bsc#965125).

  - e1000e: Fix tight loop implementation of systime read     algorithm (bsc#965125).

  - ibmvnic: Fix ibmvnic_capability struct.

  - intel: Disable Skylake support in intel_idle driver     again (boo#969582) This turned out to bring a regression     on some machines, unfortunately. It should be addressed     in the upstream at first.

  - intel_idle: allow idle states to be freeze-mode specific     (boo#969582).

  - intel_idle: Skylake Client Support (boo#969582).

  - intel_idle: Skylake Client Support - updated     (boo#969582).

  - libceph: fix scatterlist last_piece calculation     (bsc#963746).

  - lio: Add LIO clustered RBD backend (fate#318836)

  - net kabi fixes for 4.1.19.

  - numa patches updated to v15

  - ocfs2: fix dlmglue deadlock issue(bnc#962257)

  - pci: thunder: Add driver for ThunderX-pass(1,2) on-chip     devices

  - pci: thunder: Add PCIe host driver for ThunderX     processors

  - sd: Optimal I/O size is in bytes, not sectors     (boo#961263).

  - sd: Reject optimal transfer length smaller than page     size (boo#961263).

  - series.conf: move cxgb3 patch to network drivers section

Update to the latest upstream stable release, Linux v4.3.6

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.

Incremental update from 4.4.3-200 bringing in a few missed ARMv7 fixes
---- The 4.4.3 update contains a number of important fixes across the tree

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.

When running as a Xen 64-bit PV guest, user mode processes not supposed to be able to access I/O ports may be granted such permission, potentially resulting in one or more of in-guest privilege escalation, guest crashes (Denial of Service), or in-guest information leaks. (CVE-2016-3157)

In some cases, the kernel did not correctly fix backward jumps in a new eBPF program, which could allow arbitrary reads. (CVE-2016-2383)

The kernel incorrectly accounted for the number of in-flight fds over a unix domain socket to the original opener of the file descriptor.
Another process could arbitrarily deplete the original file opener's maximum open files resource limit. (CVE-2016-2550)

A resource-exhaustion vulnerability was found in the kernel, where an unprivileged process could allocate and accumulate far more file descriptors than the process' limit. A local, unauthenticated user could exploit this flaw by sending file descriptors over a Unix socket and then closing them to keep the process' fd count low, thereby creating kernel-memory or file-descriptors exhaustion (denial of service). (CVE-2016-2847)

According to the versions of the kernel packages installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerabilities :

  - The hid_input_field() function in     'drivers/hid/hid-core.c' in the Linux kernel before 4.6     allows physically proximate attackers to obtain     sensitive information from kernel memory or cause a     denial of service (out-of-bounds read) by connecting a     device.(CVE-2016-7915i1/4%0

  - The Linux kernel, before version 4.14.2, is vulnerable     to a deadlock caused by     fs/ocfs2/file.c:ocfs2_setattr(), as the function does     not wait for DIO requests before locking the inode.
    This can be exploited by local users to cause a     subsequent denial of service.(CVE-2017-18204i1/4%0

  - The vmw_gb_surface_define_ioctl function (accessible     via DRM_IOCTL_VMW_GB_SURFACE_CREATE) in     drivers/gpu/drm/vmwgfx/vmwgfx_surface.c in the Linux     kernel through 4.11.4 defines a backup_handle variable     but does not give it an initial value. If one attempts     to create a GB surface, with a previously allocated DMA     buffer to be used as a backup buffer, the backup_handle     variable does not get written to and is then later     returned to user space, allowing local users to obtain     sensitive information from uninitialized kernel memory     via a crafted ioctl call.(CVE-2017-9605i1/4%0

  - Use-after-free vulnerability in the nfqnl_zcopy     function in net/netfilter/nfnetlink_queue_core.c in the     Linux kernel through 3.13.6 allows attackers to obtain     sensitive information from kernel memory by leveraging     the absence of a certain orphaning operation. NOTE: the     affected code was moved to the skb_zerocopy function in     net/core/skbuff.c before the vulnerability was     announced.(CVE-2014-2568i1/4%0

  - It was found that the Linux kernel's ISO file system     implementation did not correctly limit the traversal of     Rock Ridge extension Continuation Entries (CE). An     attacker with physical access to the system could use     this flaw to trigger an infinite loop in the kernel,     resulting in a denial of service.(CVE-2014-9420i1/4%0

  - An integer overflow vulnerability was found in the     ring_buffer_resize() calculations in which a privileged     user can adjust the size of the ringbuffer message     size. These calculations can create an issue where the     kernel memory allocator will not allocate the correct     count of pages yet expect them to be usable. This can     lead to the ftrace() output to appear to corrupt kernel     memory and possibly be used for privileged escalation     or more likely kernel panic.(CVE-2016-9754i1/4%0

  - A symlink size validation was missing in Linux kernels     built with UDF file system (CONFIG_UDF_FS) support,     allowing the corruption of kernel memory. An attacker     able to mount a corrupted/malicious UDF file system     image could cause the kernel to crash.(CVE-2014-9730i1/4%0

  - In was found that in the Linux kernel, in     vmw_surface_define_ioctl() function in     'drivers/gpu/drm/vmwgfx/vmwgfx_surface.c' file, a     'num_sizes' parameter is assigned a user-controlled     value which is not checked if it is zero. This is used     in a call to kmalloc() and later leads to dereferencing     ZERO_SIZE_PTR, which in turn leads to a GPF and     possibly to a kernel panic.(CVE-2017-7261i1/4%0

  - A race condition flaw was found in the way the Linux     kernel keys management subsystem performed key garbage     collection. A local attacker could attempt accessing a     key while it was being garbage collected, which would     cause the system to crash.(CVE-2014-9529i1/4%0

  - A flaw was found in the Linux kernel's implementation     of i8042 serial ports. An attacker could cause a kernel     panic if they are able to add and remove devices as the     module is loaded.(CVE-2017-18079i1/4%0

  - drivers/hid/hid-pl.c in the Human Interface Device     (HID) subsystem in the Linux kernel through 3.11, when     CONFIG_HID_PANTHERLORD is enabled, allows physically     proximate attackers to cause a denial of service     (heap-based out-of-bounds write) via a crafted     device.(CVE-2013-2892i1/4%0

  - The __clear_user function in     arch/arm64/lib/clear_user.S in the Linux kernel before     3.17.4 on the ARM64 platform allows local users to     cause a denial of service (system crash) by reading one     byte beyond a /dev/zero page boundary.(CVE-2014-7843i1/4%0

  - A divide-by-zero vulnerability was found in a way the     kernel processes TCP connections. The error can occur     if a connection starts another cwnd reduction phase by     setting tp-i1/4zprior_cwnd to the current cwnd (0) in     tcp_init_cwnd_reduction(). A remote, unauthenticated     attacker could use this flaw to crash the kernel     (denial of service).(CVE-2016-2070i1/4%0

  - The adjust_branches function in kernel/bpf/verifier.c     in the Linux kernel before 4.5 does not consider the     delta in the backward-jump case, which allows local     users to obtain sensitive information from kernel     memory by creating a packet filter and then loading     crafted BPF instructions.(CVE-2016-2383i1/4%0

  - System using the infiniband support module ib_srpt were     vulnerable to a denial of service by system crash by a     local attacker who is able to abort writes to a device     using this initiator.(CVE-2016-6327i1/4%0

  - A security flaw was found in the Linux kernel in the     mark_source_chains() function in     'net/ipv4/netfilter/ip_tables.c'. It is possible for a     user-supplied 'ipt_entry' structure to have a large     'next_offset' field. This field is not bounds checked     prior to writing to a counter value at the supplied     offset.(CVE-2016-3134i1/4%0

  - An out-of-bounds access issue was discovered in     yurex_read() in drivers/usb/misc/yurex.c in the Linux     kernel. A local attacker could use user access     read/writes with incorrect bounds checking in the yurex     USB driver to crash the kernel or potentially escalate     privileges.(CVE-2018-16276i1/4%0

  - drivers/media/v4l2-core/videobuf2-v4l2.c in the Linux     kernel before 4.5.3 allows local users to cause a     denial of service (kernel memory write operation) or     possibly have unspecified other impact via a crafted     number of planes in a VIDIOC_DQBUF ioctl     call.(CVE-2016-4568i1/4%0

  - The usb_serial_console_disconnect function in     drivers/usb/serial/console.c in the Linux kernel,     before 4.13.8, allows local users to cause a denial of     service (use-after-free and system crash) or possibly     have unspecified other impact via a crafted USB device,     related to disconnection and failed     setup.(CVE-2017-16525i1/4%0

  - The Linux kernel is vulnerable to a NULL pointer     dereference in the ext4/xattr.c:ext4_xattr_inode_hash()     function. An attacker could trick a legitimate user or     a privileged attacker could exploit this to cause a     NULL pointer dereference with a crafted ext4 image.
    (CVE-2018-1094)

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

ID	Name	Product	Family	Published	Updated	Severity
89570	Fedora 23 : kernel-4.4.2-301.fc23 (2016-7e12ae5359)	Nessus	Fedora Local Security Checks	3/4/2016	1/11/2021	critical
90402	Ubuntu 15.10 : linux vulnerabilities (USN-2947-1)	Nessus	Ubuntu Local Security Checks	4/7/2016	1/12/2023	critical
90403	Ubuntu 14.04 LTS : Linux kernel (Wily HWE) vulnerabilities (USN-2947-2)	Nessus	Ubuntu Local Security Checks	4/7/2016	8/27/2024	critical
90482	openSUSE Security Update : the Linux Kernel (openSUSE-2016-445)	Nessus	SuSE Local Security Checks	4/13/2016	1/19/2021	critical
89632	Fedora 22 : kernel-4.3.6-201.fc22 (2016-e7162262b0)	Nessus	Fedora Local Security Checks	3/4/2016	1/11/2021	critical
89702	Fedora 22 : kernel-4.4.3-201.fc22 (2016-9fbe2c258b)	Nessus	Fedora Local Security Checks	3/7/2016	1/11/2021	critical
90404	Ubuntu 15.10 : linux-raspi2 vulnerabilities (USN-2947-3)	Nessus	Ubuntu Local Security Checks	4/7/2016	1/12/2023	critical
89966	Amazon Linux AMI : kernel (ALAS-2016-669)	Nessus	Amazon Linux Local Security Checks	3/17/2016	4/18/2018	high
124796	EulerOS Virtualization for ARM 64 3.0.1.0 : kernel (EulerOS-SA-2019-1472)	Nessus	Huawei Local Security Checks	5/13/2019	5/20/2022	high

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