| Description: | Summary:
The remote host is missing an update for the Debian 'linux-2.6' package(s) announced via the DSA-2443-1 advisory.
Vulnerability Insight:
Several vulnerabilities have been discovered in the Linux kernel that may lead to a denial of service or privilege escalation. The Common Vulnerabilities and Exposures project identifies the following problems:
CVE-2009-4307
Nageswara R Sastry reported an issue in the ext4 filesystem. Local users with the privileges to mount a filesystem can cause a denial of service (BUG) by providing a s_log_groups_per_flex value greater than 31.
CVE-2011-1833
Vasiliy Kulikov of Openwall and Dan Rosenberg discovered an information leak in the eCryptfs filesystem. Local users were able to mount arbitrary directories.
CVE-2011-4347
Sasha Levin reported an issue in the device assignment functionality in KVM. Local users with permission to access /dev/kvm could assign unused pci devices to a guest and cause a denial of service (crash).
CVE-2012-0045
Stephan Barwolf reported an issue in KVM. Local users in a 32-bit guest running on a 64-bit system can crash the guest with a syscall instruction.
CVE-2012-1090
CAI Qian reported an issue in the CIFS filesystem. A reference count leak can occur during the lookup of special files, resulting in a denial of service (oops) on umount.
CVE-2012-1097
H. Peter Anvin reported an issue in the regset infrastructure. Local users can cause a denial of service (NULL pointer dereference) by triggering the write methods of readonly regsets.
For the stable distribution (squeeze), this problem has been fixed in version 2.6.32-41squeeze2.
The following matrix lists additional source packages that were rebuilt for compatibility with or to take advantage of this update:
Debian 6.0 (squeeze)
user-mode-linux
2.6.32-1um-4+41squeeze2
We recommend that you upgrade your linux-2.6 and user-mode-linux packages.
Thanks to Micah Anderson for proof reading this text.
Affected Software/OS:
'linux-2.6' package(s) on Debian 6.
Solution:
Please install the updated package(s).
CVSS Score:
7.2
CVSS Vector:
AV:L/AC:L/Au:N/C:C/I:C/A:C
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