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linux - security update

Description

Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or have other impacts. * [CVE-2016-9588](https://security-tracker.debian.org/tracker/CVE-2016-9588) Jim Mattson discovered that the KVM implementation for Intel x86 processors does not properly handle #BP and #OF exceptions in an L2 (nested) virtual machine. A local attacker in an L2 guest VM can take advantage of this flaw to cause a denial of service for the L1 guest VM. * [CVE-2017-2636](https://security-tracker.debian.org/tracker/CVE-2017-2636) Alexander Popov discovered a race condition flaw in the n\_hdlc line discipline that can lead to a double free. A local unprivileged user can take advantage of this flaw for privilege escalation. On systems that do not already have the n\_hdlc module loaded, this can be mitigated by disabling it: `echo >> /etc/modprobe.d/disable-n_hdlc.conf install n_hdlc false` * [CVE-2017-5669](https://security-tracker.debian.org/tracker/CVE-2017-5669) Gareth Evans reported that privileged users can map memory at address 0 through the shmat() system call. This could make it easier to exploit other kernel security vulnerabilities via a set-UID program. * [CVE-2017-5986](https://security-tracker.debian.org/tracker/CVE-2017-5986) Alexander Popov reported a race condition in the SCTP implementation that can be used by local users to cause a denial-of-service (crash). The initial fix for this was incorrect and introduced further security issues ([CVE-2017-6353](https://security-tracker.debian.org/tracker/CVE-2017-6353)). This update includes a later fix that avoids those. On systems that do not already have the sctp module loaded, this can be mitigated by disabling it: `echo >> /etc/modprobe.d/disable-sctp.conf install sctp false` * [CVE-2017-6214](https://security-tracker.debian.org/tracker/CVE-2017-6214) Dmitry Vyukov reported a bug in the TCP implementation's handling of urgent data in the splice() system call. This can be used by a remote attacker for denial-of-service (hang) against applications that read from TCP sockets with splice(). * [CVE-2017-6345](https://security-tracker.debian.org/tracker/CVE-2017-6345) Andrey Konovalov reported that the LLC type 2 implementation incorrectly assigns socket buffer ownership. This can be used by a local user to cause a denial-of-service (crash). On systems that do not already have the llc2 module loaded, this can be mitigated by disabling it: `echo >> /etc/modprobe.d/disable-llc2.conf install llc2 false` * [CVE-2017-6346](https://security-tracker.debian.org/tracker/CVE-2017-6346) Dmitry Vyukov reported a race condition in the raw packet (af\_packet) fanout feature. Local users with the CAP\_NET\_RAW capability (in any user namespace) can use this for denial-of-service and possibly for privilege escalation. * [CVE-2017-6348](https://security-tracker.debian.org/tracker/CVE-2017-6348) Dmitry Vyukov reported that the general queue implementation in the IrDA subsystem does not properly manage multiple locks, possibly allowing local users to cause a denial-of-service (deadlock) via crafted operations on IrDA devices. For the stable distribution (jessie), these problems have been fixed in version 3.16.39-1+deb8u2. We recommend that you upgrade your linux packages.


Affected Software


CPE Name Name Version
linux 3.16.7-ckt20-1+deb8u1
linux 3.16.7-ckt11-1+deb8u3
linux 3.16.39-1+deb8u1
linux 3.16.7-ckt11-1+deb8u3~bpo70+1
linux 3.16.7-ckt11-1+deb8u6~bpo70+1
linux 3.16.7-ckt11-1+deb8u4
linux 3.16.7-ckt20-1+deb8u2~bpo70+1
linux 3.16.7-ckt9-3~deb8u1~bpo70+1
linux 3.16.39-1+deb8u1~bpo70+1
linux 3.16.39-1~bpo70+1
linux 3.16.7-ckt11-1
linux 3.16.7-ckt11-1~bpo70+1
linux 3.16.7-ckt25-2
linux 3.16.7-ckt20-1+deb8u3
linux 3.16.7-ckt25-2~bpo70+1
linux 3.16.7-ckt20-1+deb8u3~bpo70+1
linux 3.16.7-ckt20-1+deb8u4~bpo70+1
linux 3.16.7-ckt11-1+deb8u4~bpo70+1
linux 3.16.36-1+deb8u1
linux 3.16.7-ckt25-1
linux 3.16.39-1+deb8u1~bpo70+1+gcc4.4
linux 3.16.7-ckt20-1
linux 3.16.7-ckt25-1~bpo70+1
linux 3.16.7-ckt11-1+deb8u2~bpo70+1
linux 3.16.7-ckt17-1
linux 3.16.7-ckt25-2+deb8u1
linux 3.16.36-1+deb8u1~bpo70+1
linux 3.16.7-ckt9-3
linux 3.16.7-ckt11-1+deb8u1
linux 3.16.7-ckt25-2+deb8u3~bpo70+1
linux 3.16.36-1+deb8u2~bpo70+1
linux 3.16.7-ckt11-1+deb8u6
linux 3.16.7-ckt11-1+deb8u2
linux 3.16.7-ckt25-2+deb8u2
linux 3.16.7-ckt20-1+deb8u2
linux 3.16.36-1
linux 3.16.36-1+deb8u2
linux 3.16.7-ckt9-2
linux 3.16.39-1
linux 3.16.7-ckt20-1+deb8u4
linux 3.16.7-ckt9-3~deb8u1
linux 3.16.7-ckt25-2+deb8u3
linux 3.16.7-ckt11-1+deb8u5

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