Type      :   Security Update

Severity :   Moderate

CVEs     :  2012-2100

Description : 

The kernel package contains the Linux kernel (vmlinuz), the core of any Linux operating system. The kernel handles the basic functions of the operating system: memory allocation, process allocation, device input and output, etc.

Security issues fixed with this release:

• CVE-2012-2100

The ext4_fill_flex_info function in fs/ext4/super.c in the Linux kernel before 3.2.2, on the x86 platform and unspecified other platforms, allows user-assisted remote attackers to trigger inconsistent filesystem-groups data and possibly cause a denial of service via a malformed ext4 filesystem containing a super block with a large FLEX_BG group size (aka s_log_groups_per_flex value). NOTE: this vulnerability exists because of an incomplete fix for CVE-2009-4307.

Solution : Update packages.

For example

1、tar  zxvf  kernel-2.6.18-308.7.AXS3.i686.tar.gz

2、cd  x86

3、rpm  -Uvh   *.rpm

4、reboot 

Download :

x86         x86-64