A new update is available for Red Hat Enterprise Linux. Here the announcement:

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Red Hat Security Advisory

Synopsis: Important: kernel security update
Advisory ID: RHSA-2005:529-01
Advisory URL: https://rhn.redhat.com/errata/RHSA-2005-529.html
Issue date: 2005-08-25
Updated on: 2005-08-25
Product: Red Hat Enterprise Linux
CVE Names: CAN-2005-0504 CAN-2005-0749 CAN-2005-1263 CAN-2004-1056
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1. Summary:

Updated kernel packages that fix a number of security issues as well as
other bugs are now available for Red Hat Enterprise Linux 2.1 (32 bit
architectures)

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

2. Relevant releases/architectures:

Red Hat Enterprise Linux AS (Advanced Server) version 2.1 - i386
Red Hat Enterprise Linux ES version 2.1 - i386
Red Hat Enterprise Linux WS version 2.1 - i386

3. Problem description:

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

This is a kernel maintenance update to Red Hat Enterprise Linux 2.1.

The following security issues were corrected:

A flaw between execve() syscall handling and core dumping of ELF-format
executables allowed local unprivileged users to cause a denial of
service (system crash) or possibly gain privileges. The Common
Vulnerabilities and Exposures project has assigned the name CAN-2005-1263
to this issue.

A flaw when freeing a pointer in load_elf_library was discovered. A local
user could potentially use this flaw to cause a denial of service (crash).
(CAN-2005-0749)

The Direct Rendering Manager (DRM) driver did not properly check the DMA
lock, which could allow remote attackers or local users to cause a denial
of service (X Server crash) or possibly modify the video output.
(CAN-2004-1056)

A flaw in the moxa serial driver could allow a local user to perform
privileged operations such as replacing the firmware. (CAN-2005-0504)

The following bug fixes were also made:

- - Fix a race condition that can cause a panic in __get_lease()
- - Fix a race condition that can cause a panic when reading /proc/mdstat
- - Fix incorrect ide accounting
- - Prevent non-root users from reloading moxa driver firmware
- - Fix a null-pointer-dereference bug in rpciod
- - Fix legacy-usb handoff for certain IBM platforms
- - Fix a bug that caused busy inodes after unmount
- - Provide an additional fix for a memory leak in scsi_scan_single.
- - Fix a potential kswapd/dquot deadlock.
- - Fix a potential local DoS in shmemfs.
- - Fix a random poolsize vulnerability.

Red Hat Enterprise Linux 2.1 users are advised to upgrade their kernels to
the packages associated with their machine configurations as listed in this
erratum.

4. Solution:

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

This update is available via Red Hat Network. 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.

5. Bug IDs fixed (http://bugzilla.redhat.com/):

127105 - RHEL 2.1: x445 Legacy USB support workaround needed
138517 - Memory Leak in AS 2.1 and 3.0 kernels
139775 - Filesystem quota GFP_KERNEL deadlock kswapd on dqio_sem.
144389 - CAN-2004-1056 insufficient locking checks in DRM code
144534 - random poolsize sysctl handler integer overflow
146103 - CAN-2005-0504 moxa CAP_SYS_RAWIO missing
152412 - CAN-2005-0749 load_elf_library possible DoS
156636 - [IT 54907] System oopsing in __get_lease()
157452 - CAN-2005-1263 Linux kernel ELF core dump privilege elevation


6. RPMs required:

Red Hat Enterprise Linux AS (Advanced Server) version 2.1:

SRPMS:
ftp://updates.redhat.com/enterprise/2.1AS/en/os/SRPMS/kernel-2.4.9-e.65.src.rpm
75b21788376ac66ca843550c609e7b2f kernel-2.4.9-e.65.src.rpm

i386:
0115ce5492ec4690d964445d2d9d5a28 kernel-2.4.9-e.65.athlon.rpm
9177fbe85508b0871b351084b4cf2cff kernel-2.4.9-e.65.i686.rpm
dbf1e8c201a371fe826c1a702790901b kernel-BOOT-2.4.9-e.65.i386.rpm
0891cd9a3a384918658ed9dd39c957f5 kernel-debug-2.4.9-e.65.i686.rpm
d2c0e5ba807aa9ea06100def9e8a6d63 kernel-doc-2.4.9-e.65.i386.rpm
0bbcb37e9f86b979d5befa0088dc94ca kernel-enterprise-2.4.9-e.65.i686.rpm
183e048e76fe3a621bcc1ae58bad4ab7 kernel-headers-2.4.9-e.65.i386.rpm
7681a9e9032ca8428d91de93de8acac2 kernel-smp-2.4.9-e.65.athlon.rpm
93cf8bdce245676880fb5f69bd679a77 kernel-smp-2.4.9-e.65.i686.rpm
c29148136ede778664b6ce6400a3e48a kernel-source-2.4.9-e.65.i386.rpm
595da28faf3f8de4e830479d42671f50 kernel-summit-2.4.9-e.65.i686.rpm

Red Hat Enterprise Linux ES version 2.1:

SRPMS:
ftp://updates.redhat.com/enterprise/2.1ES/en/os/SRPMS/kernel-2.4.9-e.65.src.rpm
75b21788376ac66ca843550c609e7b2f kernel-2.4.9-e.65.src.rpm

i386:
0115ce5492ec4690d964445d2d9d5a28 kernel-2.4.9-e.65.athlon.rpm
9177fbe85508b0871b351084b4cf2cff kernel-2.4.9-e.65.i686.rpm
dbf1e8c201a371fe826c1a702790901b kernel-BOOT-2.4.9-e.65.i386.rpm
0891cd9a3a384918658ed9dd39c957f5 kernel-debug-2.4.9-e.65.i686.rpm
d2c0e5ba807aa9ea06100def9e8a6d63 kernel-doc-2.4.9-e.65.i386.rpm
183e048e76fe3a621bcc1ae58bad4ab7 kernel-headers-2.4.9-e.65.i386.rpm
7681a9e9032ca8428d91de93de8acac2 kernel-smp-2.4.9-e.65.athlon.rpm
93cf8bdce245676880fb5f69bd679a77 kernel-smp-2.4.9-e.65.i686.rpm
c29148136ede778664b6ce6400a3e48a kernel-source-2.4.9-e.65.i386.rpm

Red Hat Enterprise Linux WS version 2.1:

SRPMS:
ftp://updates.redhat.com/enterprise/2.1WS/en/os/SRPMS/kernel-2.4.9-e.65.src.rpm
75b21788376ac66ca843550c609e7b2f kernel-2.4.9-e.65.src.rpm

i386:
0115ce5492ec4690d964445d2d9d5a28 kernel-2.4.9-e.65.athlon.rpm
9177fbe85508b0871b351084b4cf2cff kernel-2.4.9-e.65.i686.rpm
dbf1e8c201a371fe826c1a702790901b kernel-BOOT-2.4.9-e.65.i386.rpm
0891cd9a3a384918658ed9dd39c957f5 kernel-debug-2.4.9-e.65.i686.rpm
d2c0e5ba807aa9ea06100def9e8a6d63 kernel-doc-2.4.9-e.65.i386.rpm
0bbcb37e9f86b979d5befa0088dc94ca kernel-enterprise-2.4.9-e.65.i686.rpm
183e048e76fe3a621bcc1ae58bad4ab7 kernel-headers-2.4.9-e.65.i386.rpm
7681a9e9032ca8428d91de93de8acac2 kernel-smp-2.4.9-e.65.athlon.rpm
93cf8bdce245676880fb5f69bd679a77 kernel-smp-2.4.9-e.65.i686.rpm
c29148136ede778664b6ce6400a3e48a kernel-source-2.4.9-e.65.i386.rpm

These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://www.redhat.com/security/team/key/#package

7. References:

http://cve.mitre.org/cgi-bin/cvename.cgi?nameÊN-2005-0504
http://cve.mitre.org/cgi-bin/cvename.cgi?nameÊN-2005-0749
http://cve.mitre.org/cgi-bin/cvename.cgi?nameÊN-2005-1263
http://cve.mitre.org/cgi-bin/cvename.cgi?nameÊN-2004-1056

8. Contact:

The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://www.redhat.com/security/team/contact/

Copyright 2005 Red Hat, Inc.

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