| Description: | Summary:
The remote host is missing an update for the 'dracut, kernel, kernel-userspace-headers, kmod-vboxadditions, kmod-virtualbox, kmod-xtables-addons' package(s) announced via the MGASA-2016-0225 advisory.
Vulnerability Insight:
This kernel update provides an upgrade to the upstream 4.4 longterm kernel
series, currently based on 4.4.13 and resolves at least the following
security issues:
The Linux kernel before 4.4.1 allows local users to bypass file-descriptor
limits and cause a denial of service (memory consumption) by sending each
descriptor over a UNIX socket before closing it, related to
net/unix/af_unix.c and net/unix/garbage.c (CVE-2013-4312).
drivers/usb/serial/whiteheat.c in the Linux kernel before 4.2.4 allows
physically proximate attackers to cause a denial of service (NULL pointer
dereference and OOPS) or possibly have unspecified other impact via a
crafted USB device (CVE-2015-5257).
The KVM subsystem in the Linux kernel through 4.2.6, and Xen 4.3.x through
4.6.x, allows guest OS users to cause a denial of service (host OS panic or
hang) by triggering many #AC (aka Alignment Check) exceptions, related to
svm.c and vmx.c (CVE-2015-5307).
An out-of-bounds memory read was found, affecting kernels from 4.3-rc1
onwards. This vulnerability was caused by incorrect X.509 time validation
in x509_decode_time() function in x509_cert_parser.c (CVE-2015-5327).
The __rds_conn_create function in net/rds/connection.c in the Linux kernel
through 4.2.3 allows local users to cause a denial of service (NULL pointer
dereference and system crash) or possibly have unspecified other impact by
using a socket that was not properly bound (CVE-2015-6937).
The keyctl_read_key function in security/keys/keyctl.c in the Linux kernel
before 4.3.4 does not properly use a semaphore, which allows local users
to cause a denial of service (NULL pointer dereference and system crash)
or possibly have unspecified other impact via a crafted application that
leverages a race condition between keyctl_revoke and keyctl_read calls
(CVE-2015-7550).
The slhc_init function in drivers/net/slip/slhc.c in the Linux kernel
through 4.2.3 does not ensure that certain slot numbers are valid, which
allows local users to cause a denial of service (NULL pointer dereference
and system crash) via a crafted PPPIOCSMAXCID ioctl call (CVE-2015-7799).
The KVM subsystem in the Linux kernel through 4.2.6, and Xen 4.3.x through
4.6.x, allows 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
(CVE-2015-8104).
The networking implementation in the Linux kernel through 4.3.3, as used
in Android and other products, does not validate protocol identifiers for
certain protocol families, which allows local users to cause a denial of
service (NULL function pointer dereference and system crash) or possibly
gain privileges by leveraging CLONE_NEWUSER support to execute a crafted
SOCK_RAW application (CVE-2015-8543).
An issue with ASN.1 DER decoder was reported that could lead to memory
corruptions, possible privilege escalation, or complete local denial
of service via ... [Please see the references for more information on the vulnerabilities]
Affected Software/OS:
'dracut, kernel, kernel-userspace-headers, kmod-vboxadditions, kmod-virtualbox, kmod-xtables-addons' package(s) on Mageia 5.
Solution:
Please install the updated package(s).
CVSS Score:
7.2
CVSS Vector:
AV:L/AC:L/Au:N/C:C/I:C/A:C
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