| 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:
* several flaws were found in the way the Linux kernel CIFS implementation
handles Unicode strings. CIFS clients convert Unicode strings sent by a
server to their local character sets, and then write those strings into
memory. If a malicious server sent a long enough string, it could write
past the end of the target memory region and corrupt other memory areas,
possibly leading to a denial of service or privilege escalation on the
client mounting the CIFS share. (CVE-2009-1439, CVE-2009-1633, Important)
* the Linux kernel Network File System daemon (nfsd) implementation did not
drop the CAP_MKNOD capability when handling requests from local,
unprivileged users. This flaw could possibly lead to an information leak or
privilege escalation. (CVE-2009-1072, Moderate)
* Frank Filz reported the NFSv4 client was missing a file permission check
for the execute bit in some situations. This could allow local,
unprivileged users to run non-executable files on NFSv4 mounted file
systems. (CVE-2009-1630, Moderate)
* a missing check was found in the hypervisor_callback() function in the
Linux kernel provided by the kernel-xen package. This could cause a denial
of service of a 32-bit guest if an application running in that guest
accesses a certain memory location in the kernel. (CVE-2009-1758, Moderate)
* a flaw was found in the AGPGART driver. The agp_generic_alloc_page() and
agp_generic_alloc_pages() functions did not zero out the memory pages they
allocate, which may later be available to user-space processes. This flaw
could possibly lead to an information leak. (CVE-2009-1192, Low)
Bug fixes:
* a race in the NFS client between destroying cached access rights and
unmounting an NFS file system could have caused a system crash. 'Busy
inodes' messages may have been logged. (BZ#498653)
* nanosleep() could sleep several milliseconds less than the specified time
on Intel Itanium-based systems. (BZ#500349)
* LEDs for disk drives in AHCI mode may have displayed a fault state when
there were no faults. (BZ#500120)
* ptrace_do_wait() reported tasks were stopped each time the process doing
the trace called wait(), instead of reporting it once. (BZ#486945)
* epoll_wait() may have caused a system lockup and problems for
applications. (BZ#497322)
* missing capabilities could possibly allow users with an fsuid other than
0 to perform actions on some file system types that would otherwise be
pr ...
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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