Synopsis: Important: kernel security and bug fix update
Advisory ID: SLSA-2017:2930-1
Issue Date: 2017-10-19
CVE Numbers: CVE-2016-8399
CVE-2017-7541
CVE-2017-7184
CVE-2017-11176
CVE-2017-7542
CVE-2017-1000111
CVE-2017-1000112
CVE-2017-7558
CVE-2017-14106
--
Security Fix(es):
* Out-of-bounds kernel heap access vulnerability was found in xfrm,
kernel's IP framework for transforming packets. An error dealing with
netlink messages from an unprivileged user leads to arbitrary read/write
and privilege escalation. (CVE-2017-7184, Important)
* A race condition issue leading to a use-after-free flaw was found in the
way the raw packet sockets are implemented in the Linux kernel networking
subsystem handling synchronization. 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-2017-1000111, Important)
* An exploitable memory corruption flaw was found in the Linux kernel. The
append path can be erroneously switched from UFO to non-UFO in
ip_ufo_append_data() when building an UFO packet with MSG_MORE option. If
unprivileged user namespaces are available, this flaw can be exploited to
gain root privileges. (CVE-2017-1000112, Important)
* A flaw was found in the Linux networking subsystem where a local
attacker with CAP_NET_ADMIN capabilities could cause an out-of-bounds
memory access by creating a smaller-than-expected ICMP header and sending
to its destination via sendto(). (CVE-2016-8399, Moderate)
* Kernel memory corruption due to a buffer overflow was found in
brcmf_cfg80211_mgmt_tx() function in Linux kernels from v3.9-rc1 to
v4.13-rc1. The vulnerability can be triggered by sending a crafted
NL80211_CMD_FRAME packet via netlink. This flaw is unlikely to be
triggered remotely as certain userspace code is needed for this. An
unprivileged local user could use this flaw to induce kernel memory
corruption on the system, leading to a crash. Due to the nature of the
flaw, privilege escalation cannot be fully ruled out, although it is
unlikely. (CVE-2017-7541, Moderate)
* An integer overflow vulnerability in ip6_find_1stfragopt() function was
found. A local attacker that has privileges (of CAP_NET_RAW) to open raw
socket can cause an infinite loop inside the ip6_find_1stfragopt()
function. (CVE-2017-7542, Moderate)
* A kernel data leak due to an out-of-bound read was found in the Linux
kernel in inet_diag_msg_sctp{,l}addr_fill() and sctp_get_sctp_info()
functions present since version 4.7-rc1 through version 4.13. A data leak
happens when these functions fill in sockaddr data structures used to
export socket's diagnostic information. As a result, up to 100 bytes of
the slab data could be leaked to a userspace. (CVE-2017-7558, Moderate)
* The mq_notify function in the Linux kernel through 4.11.9 does not set
the sock pointer to NULL upon entry into the retry logic. During a user-
space close of a Netlink socket, it allows attackers to possibly cause a
situation where a value may be used after being freed (use-after-free)
which may lead to memory corruption or other unspecified other impact.
(CVE-2017-11176, Moderate)
* A divide-by-zero vulnerability was found in the __tcp_select_window
function in the Linux kernel. This can result in a kernel panic causing a
local denial of service. (CVE-2017-14106, Moderate)
--
SL7
x86_64
kernel-3.10.0-693.5.2.el7.x86_64.rpm
kernel-debug-3.10.0-693.5.2.el7.x86_64.rpm
kernel-debug-debuginfo-3.10.0-693.5.2.el7.x86_64.rpm
kernel-debug-devel-3.10.0-693.5.2.el7.x86_64.rpm
kernel-debuginfo-3.10.0-693.5.2.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-693.5.2.el7.x86_64.rpm
kernel-devel-3.10.0-693.5.2.el7.x86_64.rpm
kernel-headers-3.10.0-693.5.2.el7.x86_64.rpm
kernel-tools-3.10.0-693.5.2.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-693.5.2.el7.x86_64.rpm
kernel-tools-libs-3.10.0-693.5.2.el7.x86_64.rpm
perf-3.10.0-693.5.2.el7.x86_64.rpm
perf-debuginfo-3.10.0-693.5.2.el7.x86_64.rpm
python-perf-3.10.0-693.5.2.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-693.5.2.el7.x86_64.rpm
kernel-tools-libs-devel-3.10.0-693.5.2.el7.x86_64.rpm
noarch
kernel-abi-whitelists-3.10.0-693.5.2.el7.noarch.rpm
kernel-doc-3.10.0-693.5.2.el7.noarch.rpm
- Scientific Linux Development Team
