RHSA-2004:066 - Security Advisory
kernel security update
Security Advisory: Important
Updated kernel packages that fix a security vulnerability that may allow
local users to gain root privileges are now available. These packages also
resolve other minor issues.
The Linux kernel handles the basic functions of the operating
Paul Starzetz discovered a flaw in return value checking in mremap() in the
Linux kernel versions 2.4.24 and previous that may allow a local attacker
to gain root privileges. No exploit is currently available; however this
issue is exploitable. The Common Vulnerabilities and Exposures project
(cve.mitre.org) has assigned the name CAN-2004-0077 to this issue.
All users are advised to upgrade to these errata packages, which contain
backported security patches that correct these issues.
Red Hat would like to thank Paul Starzetz from ISEC for reporting this issue.
For the IBM S/390 and IBM eServer zSeries architectures, the upstream
version of the s390utils package (which fixes a bug in the zipl
bootloader) is also included.
Before applying this update, make sure all previously released errata
relevant to your system have been applied.
To update all RPMs for your particular architecture, run:
rpm -Fvh [filenames]
where [filenames] is a list of the RPMs you wish to upgrade. Only those
RPMs which are currently installed will be updated. Those RPMs which are
not installed but included in the list will not be updated. Note that you
can also use wildcards (*.rpm) if your current directory *only* contains the
Please note that this update is also available via Red Hat Network. Many
people find this an easier way to apply updates. To use Red Hat Network,
launch the Red Hat Update Agent with the following command:
This will start an interactive process that will result in the appropriate
RPMs being upgraded on your system.
If up2date fails to connect to Red Hat Network due to SSL
Certificate Errors, you need to install a version of the
up2date client with an updated certificate. The latest version of
up2date is available from the Red Hat FTP site and may also be
downloaded directly from the RHN website:
- Red Hat Enterprise Linux Server 3 x86_64
- Red Hat Enterprise Linux Server 3 ia64
- Red Hat Enterprise Linux Server 3 i386
- Red Hat Enterprise Linux Workstation 3 x86_64
- Red Hat Enterprise Linux Workstation 3 ia64
- Red Hat Enterprise Linux Workstation 3 i386
- Red Hat Enterprise Linux for IBM z Systems 3 s390x
- Red Hat Enterprise Linux for IBM z Systems 3 s390
- Red Hat Enterprise Linux for Power, big endian 3 ppc
- BZ - 112891 - OOM killer strikes with lots of free swap space
- BZ - 113517 - RHEL 3.0 smp hang using prctl( PR_SET_PDEATHSIG
- BZ - 115820 - CAN-2004-0077 Linux kernel do_mremap VMA limit local privilege escalation
This erratum does not contain any packages.