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CVE-2011-2479

Status Candidate

Overview

The Linux kernel before 2.6.39 does not properly create transparent huge pages in response to a MAP_PRIVATE mmap system call on /dev/zero, which allows local users to cause a denial of service (system crash) via a crafted application.

Related Files

Ubuntu Security Notice USN-1281-1
Posted Nov 27, 2011
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1281-1 - Andrea Righi discovered a race condition in the KSM memory merging support. If KSM was being used, a local attacker could exploit this to crash the system, leading to a denial of service. It was discovered that an mmap() call with the MAP_PRIVATE flag on "/dev/zero" was incorrectly handled. A local attacker could exploit this to crash the system, leading to a denial of service. Vasily Averin discovered that the NFS Lock Manager (NLM) incorrectly handled unlock requests. A local attacker could exploit this to cause a denial of service. Various other issues were also addressed.

tags | advisory, denial of service, local
systems | linux, ubuntu
advisories | CVE-2011-2183, CVE-2011-2479, CVE-2011-2491, CVE-2011-2494, CVE-2011-2495, CVE-2011-2496, CVE-2011-2517, CVE-2011-2905, CVE-2011-2909, CVE-2011-3363
MD5 | aecce7ab016e9e29fd83a81e5038ab8d
Ubuntu Security Notice USN-1256-1
Posted Nov 9, 2011
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1256-1 - It was discovered that the /proc filesystem did not correctly handle permission changes when programs executed. A local attacker could hold open files to examine details about programs running with higher privileges, potentially increasing the chances of exploiting additional vulnerabilities. Vasiliy Kulikov discovered that the Bluetooth stack did not correctly clear memory. A local attacker could exploit this to read kernel stack memory, leading to a loss of privacy. Various other issues were also addressed.

tags | advisory, kernel, local, vulnerability
systems | linux, ubuntu
advisories | CVE-2011-1020, CVE-2011-1078, CVE-2011-1079, CVE-2011-1080, CVE-2011-1093, CVE-2011-1160, CVE-2011-1180, CVE-2011-1478, CVE-2011-1479, CVE-2011-1493, CVE-2011-1573, CVE-2011-1576, CVE-2011-1577, CVE-2011-1581, CVE-2011-1585, CVE-2011-1767, CVE-2011-1768, CVE-2011-1771, CVE-2011-1776, CVE-2011-1833, CVE-2011-2183, CVE-2011-2213, CVE-2011-2479, CVE-2011-2484, CVE-2011-2491, CVE-2011-2492, CVE-2011-2493, CVE-2011-2494
MD5 | ee2685f0b4d767be1169393f2ba5d7c7
Red Hat Security Advisory 2011-0928-01
Posted Jul 13, 2011
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2011-0928-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. It was found that the receive hook in the ipip_init() function in the ipip module, and in the ipgre_init() function in the ip_gre module, could be called before network namespaces setup is complete. If packets were received at the time the ipip or ip_gre module was still being loaded into the kernel, it could cause a denial of service. Various other issues were also addressed.

tags | advisory, denial of service, kernel
systems | linux, redhat
advisories | CVE-2011-1767, CVE-2011-1768, CVE-2011-2479
MD5 | fb42a7107eb98cfe88f3b911645c23ce
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