RedHat: ptrace kernel vulnerabilitiy
Summary
Summary
The Linux kernel handles the basic functions of the operating system.A ptrace-related vulnerability has been discovered that could allow a localuser to gain elevated (root) privileges without authorization. The CommonVulnerabilities and Exposures project (cve.mitre.org) has assigned the nameCAN-2003-0127 to this issue.A flaw has been discovered that could potentially lead to data corruption. The scenario only occurs while performing memory mapped file I/O, wherethe file is simultaneously unlinked and the corresponding file blocksreallocated. Furthermore, the memory mapped must be to a partial page atthe end of a file on an ext3 file system. As such, Red Hat considers thisscenario unlikely.A flaw has been found in several hash table implementations in the kernelnetworking code. A remote attacker could send packets with carefullychosen, forged source addresses in such a way as to make every routingcache entry get hashed into the same hash chain. The result would be thatthe kernel would use a disproportionate amount of processor time to dealwith new packets, resulting in a remote denial of service attack. TheCommon Vulnerabilities and Exposures project (cve.mitre.org) has assignedthe name CAN-2003-0244 to this issue.In addition, the following drivers have been updated to the version indicated:- e1000: 4.4.19-k1- e100: 2.1.29-k2- ips: 6.00.26- qla2100, qla2200, qla2300: v6.04.01- tg3 driver to 1.4c- cciss driver to 2.4.44- mpt fusion: 2.05.00- aic7xxx to 6.2.32- aic79xx to 1.3.6If the system is configured to use alternate drivers, we recommend applyingthe kudzu errata RHEA-2003:132 prior to updating the kernel.The updated kernel also adds support for the IBM x450 platform and theMadison processor, and incorporates improved support for the hugetlb filesystem. This file system makes efficient use of the large page sizesupport that the Itanium architecture provides. All users should upgrade to these errata packages, which address these issues.
Solution
Release notes, driver notes, and driver disks for this update are available
at the following URL:
Support
Before applying this update, make sure all previously released errata
relevant to your system have been applied, especially the additional
packages from RHSA-2002:205 and RHSA-2002:206 respectively.
The procedure for upgrading the kernel manually is documented at:
Support
Please read the directions for your architecture carefully before
proceeding with the kernel upgrade.
Please note that this update is also available via Red Hat Network. Many
people find this to be an easier way to apply updates. To use Red Hat
Network, launch the Red Hat Update Agent with the following command:
up2date
This will start an interactive process that will result in the appropriate
RPMs being upgraded on your system. Note that you need to select the kernel
explicitly on default configurations of up2date.
5. Bug IDs fixed ( for more info):
81349 - Machine with QLogic card hung during RAC QA
81794 - IPF: AS2.1 Errata 2: spare lun patch for VA and XP storage arrays
88301 - RHEL AS2.1 IPF: Seeing MCAs on system while testing Tulip driver
81803 - AS2.1 Errata 2: Fix to serial driver
6. RPMs required:
Red Hat Enterprise Linux AS (Advanced Server) version 2.1:
SRPMS:
ia64:
Available from Red Hat Network: kernel-source-2.4.18-e.31.ia64.rpm
Available from Red Hat Network: kernel-smp-2.4.18-e.31.ia64.rpm
Available from Red Hat Network: kernel-doc-2.4.18-e.31.ia64.rpm
Available from Red Hat Network: kernel-2.4.18-e.31.ia64.rpm
Red Hat Linux Advanced Workstation 2.1:
SRPMS:
ia64:
Available from Red Hat Network: kernel-source-2.4.18-e.31.ia64.rpm
Available from Red Hat Network: kernel-smp-2.4.18-e.31.ia64.rpm
Available from Red Hat Network: kernel-doc-2.4.18-e.31.ia64.rpm
Available from Red Hat Network: kernel-2.4.18-e.31.ia64.rpm
7. Verification:
MD5 sum Package Name
ba07dc3a6150a7512fc11f177b909526 2.1AS/en/os/SRPMS/kernel-2.4.18-e.31.src.rpm
e0ff58250b006c516f799866f0066e5c 2.1AS/en/os/ia64/kernel-2.4.18-e.31.ia64.rpm
4e578976d53cfd049cf72b3c5e072ae7 2.1AS/en/os/ia64/kernel-doc-2.4.18-e.31.ia64.rpm
d83d298a453b3d5c132c24a290b4ea7a 2.1AS/en/os/ia64/kernel-smp-2.4.18-e.31.ia64.rpm
8abaf7731b2447b3232bda41123a4638 2.1AS/en/os/ia64/kernel-source-2.4.18-e.31.ia64.rpm
ba07dc3a6150a7512fc11f177b909526 2.1AW/en/os/SRPMS/kernel-2.4.18-e.31.src.rpm
e0ff58250b006c516f799866f0066e5c 2.1AW/en/os/ia64/kernel-2.4.18-e.31.ia64.rpm
4e578976d53cfd049cf72b3c5e072ae7 2.1AW/en/os/ia64/kernel-doc-2.4.18-e.31.ia64.rpm
d83d298a453b3d5c132c24a290b4ea7a 2.1AW/en/os/ia64/kernel-smp-2.4.18-e.31.ia64.rpm
8abaf7731b2447b3232bda41123a4638 2.1AW/en/os/ia64/kernel-source-2.4.18-e.31.ia64.rpm
These packages are GPG signed by Red Hat for security. Our key is
available at All Red Hat products
You can verify each package with the following command:
rpm --checksig -v
If you only wish to verify that each package has not been corrupted or
tampered with, examine only the md5sum with the following command:
md5sum
References
Package List
Topic
Topic
These updated kernel packages address security vulnerabilites, including a
potential data corruption scenario. In addition, a number of drivers have
been updated, bugs have been resolved, and support for the IBM x450 platform
and the Madison processor have been added.
Relevant Releases Architectures
Red Hat Enterprise Linux AS (Advanced Server) version 2.1 - ia64
Red Hat Linux Advanced Workstation 2.1 - ia64
Bugs Fixed
