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Debian Security Advisory 3927-1

Debian Security Advisory 3927-1
Posted Aug 7, 2017
Authored by Debian | Site debian.org

Debian Linux Security Advisory 3927-1 - Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or information leaks.

tags | advisory, denial of service, kernel, vulnerability
systems | linux, debian
advisories | CVE-2017-1000365, CVE-2017-10810, CVE-2017-10911, CVE-2017-11176, CVE-2017-7346, CVE-2017-7482, CVE-2017-7533, CVE-2017-7541, CVE-2017-7542, CVE-2017-9605
SHA-256 | 9f9c5bb5b6146a8be5b426602758bdbc89de02e6443b2d13e49692986ac5645e

Debian Security Advisory 3927-1

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- -------------------------------------------------------------------------
Debian Security Advisory DSA-3927-1 security@debian.org
https://www.debian.org/security/ Salvatore Bonaccorso
August 07, 2017 https://www.debian.org/security/faq
- -------------------------------------------------------------------------

Package : linux
CVE ID : CVE-2017-7346 CVE-2017-7482 CVE-2017-7533 CVE-2017-7541
CVE-2017-7542 CVE-2017-9605 CVE-2017-10810 CVE-2017-10911
CVE-2017-11176 CVE-2017-1000365

Several vulnerabilities have been discovered in the Linux kernel that
may lead to a privilege escalation, denial of service or information


Li Qiang discovered that the DRM driver for VMware virtual GPUs does
not properly check user-controlled values in the
vmw_surface_define_ioctl() functions for upper limits. A local user
can take advantage of this flaw to cause a denial of service.


Shi Lei discovered that RxRPC Kerberos 5 ticket handling code does
not properly verify metadata, leading to information disclosure,
denial of service or potentially execution of arbitrary code.


Fan Wu and Shixiong Zhao discovered a race condition between inotify
events and VFS rename operations allowing an unprivileged local
attacker to cause a denial of service or escalate privileges.


A buffer overflow flaw in the Broadcom IEEE802.11n PCIe SoftMAC WLAN
driver could allow a local user to cause kernel memory corruption,
leading to a denial of service or potentially privilege escalation.


An integer overflow vulnerability in the ip6_find_1stfragopt()
function was found allowing a local attacker with privileges to open
raw sockets to cause a denial of service.


Murray McAllister discovered that the DRM driver for VMware virtual
GPUs does not properly initialize memory, potentially allowing a
local attacker to obtain sensitive information from uninitialized
kernel memory via a crafted ioctl call.


Li Qiang discovered a memory leak flaw within the VirtIO GPU driver
resulting in denial of service (memory consumption).

CVE-2017-10911 / XSA-216

Anthony Perard of Citrix discovered an information leak flaw in Xen
blkif response handling, allowing a malicious unprivileged guest to
obtain sensitive information from the host or other guests.


It was discovered that the mq_notify() function does not set the
sock pointer to NULL upon entry into the retry logic. An attacker
can take advantage of this flaw during a user-space close of a
Netlink socket to cause a denial of service or potentially cause
other impact.


It was discovered that argument and environment pointers are not
taken properly into account to the imposed size restrictions on
arguments and environmental strings passed through
RLIMIT_STACK/RLIMIT_INFINITY. A local attacker can take advantage of
this flaw in conjunction with other flaws to execute arbitrary code.

For the oldstable distribution (jessie), these problems will be fixed in
a subsequent DSA.

For the stable distribution (stretch), these problems have been fixed in
version 4.9.30-2+deb9u3.

We recommend that you upgrade your linux packages.

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/

Mailing list: debian-security-announce@lists.debian.org

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