| Description: | Summary:
The remote host is missing an update for the 'kernel'
package(s) announced via the referenced advisory.
Vulnerability Insight:
The kernel packages contain the Linux kernel, the core of any Linux
operating system.
Security fixes:
* an array index error was found in the gdth driver. A local user could
send a specially-crafted IOCTL request that would cause a denial of service
or, possibly, privilege escalation. (CVE-2009-3080, Important)
* a flaw was found in the FUSE implementation. When a system is low on
memory, fuse_put_request() could dereference an invalid pointer, possibly
leading to a local denial of service or privilege escalation.
(CVE-2009-4021, Important)
* Tavis Ormandy discovered a deficiency in the fasync_helper()
implementation. This could allow a local, unprivileged user to leverage a
use-after-free of locked, asynchronous file descriptors to cause a denial
of service or privilege escalation. (CVE-2009-4141, Important)
* the Parallels Virtuozzo Containers team reported the RHSA-2009:1243
update introduced two flaws in the routing implementation. If an attacker
was able to cause a large enough number of collisions in the routing hash
table (via specially-crafted packets) for the emergency route flush to
trigger, a deadlock could occur. Secondly, if the kernel routing cache was
disabled, an uninitialized pointer would be left behind after a route
lookup, leading to a kernel panic. (CVE-2009-4272, Important)
* the RHSA-2009:0225 update introduced a rewrite attack flaw in the
do_coredump() function. A local attacker able to guess the file name a
process is going to dump its core to, prior to the process crashing, could
use this flaw to append data to the dumped core file. This issue only
affects systems that have '/proc/sys/fs/suid_dumpable' set to 2 (the
default value is 0). (CVE-2006-6304, Moderate)
The fix for CVE-2006-6304 changes the expected behavior: With suid_dumpable
set to 2, the core file will not be recorded if the file already exists.
For example, core files will not be overwritten on subsequent crashes of
processes whose core files map to the same name.
* an information leak was found in the Linux kernel. On AMD64 systems,
32-bit processes could access and read certain 64-bit registers by
temporarily switching themselves to 64-bit mode. (CVE-2009-2910, Moderate)
* the RHBA-2008:0314 update introduced N_Port ID Virtualization (NPIV)
support in the qla2xxx driver, resulting in two new sysfs pseudo files,
'/sys/class/scsi_host/[a qla2xxx host]/vport_create' and 'vport_delete'.
These two files were world-writable by default, allowing a local user to
change SCSI host at ...
Description truncated, please see the referenced URL(s) for more information.
Affected Software/OS:
kernel on CentOS 5
Solution:
Please install the updated packages.
CVSS Score:
7.8
CVSS Vector:
AV:N/AC:L/Au:N/C:N/I:N/A:C
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