CentOS Update for kernel CESA-2011:1065 centos5 x86_64

Published: 2012-07-30 11:51:19
CVE Author: NIST National Vulnerability Database

CVSS Base Vector:
AV:L/AC:L/Au:N/C:C/I:C/A:C

Summary:
The remote host is missing an update for the 'kernel' Linux Distribution Package(s) announced via the referenced advisory.

Affected Versions:
kernel on CentOS 5

Recommendations:
Please install the updated Linux Distribution Packages.

Technical Details:
The kernel Linux Distribution Packages contain the Linux kernel, the core of any Linux operating system. This update fixes the following security issues: * A flaw was found in the way the Xen hypervisor implementation handled instruction emulation during virtual machine exits. A malicious user-space process running in an SMP guest could trick the emulator into reading a different instruction than the one that caused the virtual machine to exit. An unprivileged guest user could trigger this flaw to crash the host. This only affects systems with both an AMD x86 processor and the AMD Virtualization (AMD-V) extensions enabled. (CVE-2011-1780, Important) * A flaw allowed the tc_fill_qdisc() function in the Linux kernel's packet scheduler API implementation to be called on built-in qdisc structures. A local, unprivileged user could use this flaw to trigger a NULL pointer dereference, resulting in a denial of service. (CVE-2011-2525, Moderate) * A flaw was found in the way space was allocated in the Linux kernel's Global File System 2 (GFS2) implementation. If the file system was almost full, and a local, unprivileged user made an fallocate() request, it could result in a denial of service. Note: Setting quotas to prevent users from using all available disk space would prevent exploitation of this flaw. (CVE-2011-2689, Moderate) These updated kernel Linux Distribution Packages include a number of bug fixes and enhancements. Space precludes documenting all of these changes in this advisory. Refer to the linked Red Hat Enterprise Linux 5.7 Technical Notes for information about the most significant bug fixes and enhancements included in this update. All Red Hat Enterprise Linux 5 users are advised to install these updated Linux Distribution Packages, which correct these issues. The system must be rebooted for this update to take effect.

Detection Type:
Linux Distribution Package

Solution Type:
Vendor Patch

NIST (National Institute of Standards and Technology) NVD (National Vulnerability Database)

https://nvd.nist.gov/vuln/detail/CVE-2011-1780
https://nvd.nist.gov/vuln/detail/CVE-2011-2525
https://nvd.nist.gov/vuln/detail/CVE-2011-2689

References:

http://lists.centos.org/pipermail/centos-announce/2011-September/017865.html
https://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/5/html/5.7_Technical_Notes/kernel.html#RHSA-2011-1065

Severity
High
CVSS Score
7.2
Published
2012-07-30
Modified
2019-03-15
Category
CentOS Local Security Checks

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