| Description: | Summary:
The remote host is missing an update for the Debian 'linux' package(s) announced via the DSA-3396-1 advisory.
Vulnerability Insight:
Several vulnerabilities have been discovered in the Linux kernel that may lead to a denial of service.
CVE-2015-5307
Ben Serebrin from Google discovered a guest to host denial of service flaw affecting the KVM hypervisor. A malicious guest can trigger an infinite stream of alignment check (#AC) exceptions causing the processor microcode to enter an infinite loop where the core never receives another interrupt. This leads to a panic of the host kernel.
CVE-2015-7833
Sergej Schumilo, Hendrik Schwartke and Ralf Spenneberg discovered a flaw in the processing of certain USB device descriptors in the usbvision driver. An attacker with physical access to the system can use this flaw to crash the system.
CVE-2015-7872
Dmitry Vyukov discovered a vulnerability in the keyrings garbage collector allowing a local user to trigger a kernel panic.
CVE-2015-7990
It was discovered that the fix for CVE-2015-6937 was incomplete. A race condition when sending a message on unbound socket can still cause a NULL pointer dereference. A remote attacker might be able to cause a denial of service (crash) by sending a crafted packet.
For the oldstable distribution (wheezy), these problems have been fixed in version 3.2.68-1+deb7u6.
For the stable distribution (jessie), these problems have been fixed in version 3.16.7-ckt11-1+deb8u6.
We recommend that you upgrade your linux packages.
Affected Software/OS:
'linux' package(s) on Debian 7, Debian 8.
Solution:
Please install the updated package(s).
CVSS Score:
5.9
CVSS Vector:
AV:L/AC:M/Au:N/C:P/I:P/A:C
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