| Descripción: | Summary:
The remote host is missing an update for the 'kernel, kernel-userspace-headers, kmod-vboxadditions, kmod-virtualbox, kmod-xtables-addons' package(s) announced via the MGASA-2016-0415 advisory.
Vulnerability Insight:
This update is based on upstream 4.4.36 and fixes at least the following
security issues:
The TCP stack in the Linux kernel before 4.8.10 mishandles skb truncation,
which allows local users to cause a denial of service (system crash) via
a crafted application that makes sendto system calls, related to
net/ipv4/tcp_ipv4.c and net/ipv6/tcp_ipv6.c (CVE-2016-8645).
The mpi_powm function in lib/mpi/mpi-pow.c in the Linux kernel through
4.8.11 does not ensure that memory is allocated for limb data, which allows
local users to cause a denial of service (stack memory corruption and panic)
via an add_key system call for an RSA key with a zero exponent
(CVE-2016-8650).
A race condition issue leading to a use-after-free flaw was found in the
way the raw packet sockets implementation in the Linux kernel networking
subsystem handled synchronization while creating the TPACKET_V3 ring
buffer. A local user able to open a raw packet socket (requires the
CAP_NET_RAW capability) could use this flaw to elevate their privileges
on the system (CVE-2016-8655).
Linux kernel built with the Kernel-based Virtual Machine(CONFIG_KVM)
support is vulnerable to an information leakage issue. It could occur
on x86 platform, while emulating instructions in 32bit mode. A
user/process could use this flaw to leak host kernel memory bytes
(CVE-2016-9756).
A bug in SO_{SNDRCV}BUFFORCE setsockopt() implementation allows
CAP_NET_ADMIN users to set negative sk_sndbuf or sk_rcvbuf values.
A user could use this flaw to cause various memory corruptions,
crashes and OOM (CVE-2016-9793).
For other fixes in this update, see the referenced changelogs.
Affected Software/OS:
'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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