Updated Linux kernel packages has been released for Debian GNU/Linux 8 and 9
- -------------------------------------------------------------------------Linux Kernel Security Update for Debian 8 and 9
Debian Security Advisory DSA-4196-1 security@debian.org
https://www.debian.org/security/ Salvatore Bonaccorso
May 08, 2018 https://www.debian.org/security/faq
- -------------------------------------------------------------------------
Package : linux
CVE ID : CVE-2018-1087 CVE-2018-8897
Debian Bug : 897427 897599 898067 898100
Several vulnerabilities have been discovered in the Linux kernel that
may lead to a privilege escalation or denial of service.
CVE-2018-1087
Andy Lutomirski discovered that the KVM implementation did not
properly handle #DB exceptions while deferred by MOV SS/POP SS,
allowing an unprivileged KVM guest user to crash the guest or
potentially escalate their privileges.
CVE-2018-8897
Nick Peterson of Everdox Tech LLC discovered that #DB exceptions
that are deferred by MOV SS or POP SS are not properly handled,
allowing an unprivileged user to crash the kernel and cause a denial
of service.
For the oldstable distribution (jessie), these problems have been fixed
in version 3.16.56-1+deb8u1. This update includes various fixes for
regressions from 3.16.56-1 as released in DSA-4187-1 (Cf. #897427,
#898067 and #898100).
For the stable distribution (stretch), these problems have been fixed in
version 4.9.88-1+deb9u1. The fix for CVE-2018-1108 applied in DSA-4188-1
is temporarily reverted due to various regression, cf. #897599.
We recommend that you upgrade your linux packages.
For the detailed security status of linux please refer to its security
tracker page at:
https://security-tracker.debian.org/tracker/linux
Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/
