| Descripción: | 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:
* a system with SELinux enforced was more permissive in allowing local
users in the unconfined_t domain to map low memory areas even if the
mmap_min_addr restriction was enabled. This could aid in the local
exploitation of NULL pointer dereference bugs. (CVE-2009-2695, Important)
* a NULL pointer dereference flaw was found in the eCryptfs implementation
in the Linux kernel. A local attacker could use this flaw to cause a local
denial of service or escalate their privileges. (CVE-2009-2908, Important)
* a flaw was found in the NFSv4 implementation. The kernel would do an
unnecessary permission check after creating a file. This check would
usually fail and leave the file with the permission bits set to random
values. Note: This is a server-side only issue. (CVE-2009-3286, Important)
* a NULL pointer dereference flaw was found in each of the following
functions in the Linux kernel: pipe_read_open(), pipe_write_open(), and
pipe_rdwr_open(). When the mutex lock is not held, the i_pipe pointer could
be released by other processes before it is used to update the pipe's
reader and writer counters. This could lead to a local denial of service or
privilege escalation. (CVE-2009-3547, Important)
* a flaw was found in the Realtek r8169 Ethernet driver in the Linux
kernel. pci_unmap_single() presented a memory leak that could lead to IOMMU
space exhaustion and a system crash. An attacker on the local network could
abuse this flaw by using jumbo frames for large amounts of network traffic.
(CVE-2009-3613, Important)
* missing initialization flaws were found in the Linux kernel. Padding data
in several core network structures was not initialized properly before
being sent to user-space. These flaws could lead to information leaks.
(CVE-2009-3228, Moderate)
Bug fixes:
* with network bonding in the 'balance-tlb' or 'balance-alb' mode, the
primary setting for the primary slave device was lost when said device was
brought down. Bringing the slave back up did not restore the primary
setting. (BZ#517971)
* some faulty serial device hardware caused systems running the kernel-xen
kernel to take a very long time to boot. (BZ#524153)
* a caching bug in nfs_readdir() may have caused NFS clients to see
duplicate files or not see all files in a directory. (BZ#526960)
* the RHSA-2009:1243 update removed the mpt_msi_enable option, preventing
certain scripts from running. This update adds the o ...
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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