RHEL 4 : kernel (RHSA-2009:1671)

This script is Copyright (C) 2009-2016 Tenable Network Security, Inc.

Synopsis :

The remote Red Hat host is missing one or more security updates.

Description :

Updated kernel packages that fix multiple security issues and several
bugs are now available for Red Hat Enterprise Linux 4.

This update has been rated as having important security impact by the
Red Hat Security Response Team.

The kernel packages contain the Linux kernel, the core of any Linux
operating system.

This update fixes the following security issues :

* 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 trigger this flaw by using jumbo frames for large
amounts of network traffic. (CVE-2009-3613, Important)

* NULL pointer dereference flaws were found in the r128 driver in the
Linux kernel. Checks to test if the Concurrent Command Engine state
was initialized were missing in private IOCTL functions. An attacker
could use these flaws to cause a local denial of service or escalate
their privileges. (CVE-2009-3620, Important)

* 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,

* the unix_stream_connect() function in the Linux kernel did not check
if a UNIX domain socket was in the shutdown state. This could lead to
a deadlock. A local, unprivileged user could use this flaw to cause a
denial of service. (CVE-2009-3621, Moderate)

This update also fixes the following bugs :

* an iptables rule with the recent module and a hit count value
greater than the ip_pkt_list_tot parameter (the default is 20), did
not have any effect over packets, as the hit count could not be
reached. (BZ#529306)

* in environments that use dual-controller storage devices with the
cciss driver, Device-Mapper Multipath maps could not be detected and
configured, due to the cciss driver not exporting the bus attribute
via sysfs. This attribute is now exported. (BZ#529309)

* the kernel crashed with a divide error when a certain joystick was
attached. (BZ#532027)

* a bug in the mptctl_do_mpt_command() function in the mpt driver may
have resulted in crashes during boot on i386 systems with certain
adapters using the mpt driver, and also running the hugemem kernel.

* on certain hardware, the igb driver was unable to detect link
statuses correctly. This may have caused problems for network bonding,
such as failover not occurring. (BZ#534105)

* the RHSA-2009:1024 update introduced a regression. After updating to
Red Hat Enterprise Linux 4.8 and rebooting, network links often failed
to be brought up for interfaces using the forcedeth driver. 'no link
during initialization' messages may have been logged. (BZ#534112)

* the RHSA-2009:1024 update introduced a second regression. On certain
systems, PS/2 keyboards failed to work. (BZ#537344)

* a bug in checksum offload calculations could have crashed the bnx2x
firmware when the iptable_nat module was loaded, causing network
traffic to stop. (BZ#537013)

* a check has been added to the IPv4 code to make sure that the
routing table data structure, rt, is not NULL, to help prevent future
bugs in functions that call ip_append_data() from being exploitable.

* possible kernel pointer dereferences on systems with several NFS
mounts (a mixture of '-o lock' and '-o nolock'), which in rare cases
may have caused a system crash, have been resolved. (BZ#537017)

Users should upgrade to these updated packages, which contain
backported patches to correct these issues. The system must be
rebooted for this update to take effect.

See also :


Solution :

Update the affected packages.

Risk factor :

High / CVSS Base Score : 7.8
CVSS Temporal Score : 6.8
Public Exploit Available : true

Family: Red Hat Local Security Checks

Nessus Plugin ID: 43169 ()

Bugtraq ID: 36576

CVE ID: CVE-2009-2910

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