The remote Scientific Linux host is missing one or more security
The kernel packages contain the Linux kernel, the core of any Linux
This update fixes the following security issues :
- Using PCI passthrough without interrupt remapping
support allowed Xen hypervisor guests to generate MSI
interrupts and thus potentially inject traps. A
privileged guest user could use this flaw to crash the
host or possibly escalate their privileges on the host.
The fix for this issue can prevent PCI passthrough
working and guests starting.(CVE-2011-1898, Important)
- A flaw was found in the way CIFS (Common Internet File
System) shares with DFS referrals at their root were
handled. An attacker on the local network who is able to
deploy a malicious CIFS server could create a CIFS
network share that, when mounted, would cause the client
system to crash. (CVE-2011-3363, Moderate)
- A NULL pointer dereference flaw was found in the way the
Linux kernel's key management facility handled
user-defined key types. A local, unprivileged user could
use the keyctl utility to cause a denial of service.
- A flaw in the way memory containing security-related
data was handled in tpm_read() could allow a local,
unprivileged user to read the results of a previously
run TPM command. (CVE-2011-1162, Low)
- A NULL pointer dereference flaw was found in the Linux
kernel's HFS file system implementation. A local
attacker could use this flaw to cause a denial of
service by mounting a disk that contains a specially
crafted HFS file system with a corrupted MDB extent
record. (CVE-2011-2203, Low)
- The I/O statistics from the taskstats subsystem could be
read without any restrictions. A local, unprivileged
user could use this flaw to gather confidential
information, such as the length of a password used in a
process. (CVE-2011-2494, Low)
This update also fixes several bugs and adds one enhancement.
The system must be rebooted for this update to take effect.
See also :
Update the affected packages.
Risk factor :
High / CVSS Base Score : 7.4