RHSA-2007:0774 - Security Advisory

Topic

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

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

Description

The Linux kernel handles the basic functions of the operating system.

These new kernel packages contain fixes for the security issues described
below:

• a flaw in the ISDN CAPI subsystem that allowed a remote user to cause a

denial of service or potential remote access. Exploitation would require
the attacker to be able to send arbitrary frames over the ISDN network to
the victim's machine. (CVE-2007-1217, Moderate)

• a flaw in the perfmon subsystem on ia64 platforms that allowed a local

user to cause a denial of service. (CVE-2006-0558, Moderate)

In addition, the following bugs were addressed:

• a panic after reloading of the LSI Fusion driver.
• a vm performance problem was corrected by balancing inactive page lists.
• added a nodirplus option to address NFSv3 performance issues with large

directories.

• changed the personality handling to disallow personality changes of

setuid and setgid binaries. This ensures they keep any randomization and
Exec-shield protection.

All Red Hat Enterprise Linux 4 users are advised to upgrade their kernels
to the packages associated with their machine architectures and
configurations as listed in this erratum.

Solution

Before applying this update, make sure that all previously-released
errata relevant to your system have been applied.

This update is available via Red Hat Network. Details on how to use
the Red Hat Network to apply this update are available at
http://kbase.redhat.com/faq/FAQ_58_10188

Affected Products

• Red Hat Enterprise Linux Server 4 x86_64
• Red Hat Enterprise Linux Server 4 ia64
• Red Hat Enterprise Linux Server 4 i386
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 4.5 x86_64
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 4.5 ia64
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 4.5 i386
• Red Hat Enterprise Linux Workstation 4 x86_64
• Red Hat Enterprise Linux Workstation 4 ia64
• Red Hat Enterprise Linux Workstation 4 i386
• Red Hat Enterprise Linux Desktop 4 x86_64
• Red Hat Enterprise Linux Desktop 4 i386
• Red Hat Enterprise Linux for IBM z Systems 4 s390x
• Red Hat Enterprise Linux for IBM z Systems 4 s390
• Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 4.5 s390x
• Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 4.5 s390
• Red Hat Enterprise Linux for Power, big endian 4 ppc
• Red Hat Enterprise Linux for Power, big endian - Extended Update Support 4.5 ppc

Fixes

• BZ - 243257 - CVE-2007-1217 Overflow in CAPI subsystem
• BZ - 248141 - lockup in shrink_zone when node out of memory
• BZ - 250199 - CVE-2006-0558 ia64 crash

CVEs

• CVE-2007-1217
• CVE-2006-0558

References

• http://www.redhat.com/security/updates/classification/#moderate