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SUSE Security Announcement

Package: kernel Announcement ID: SUSE-SA:2005:067 Date: Tue, 06 Dec 2005 13:00:00 +0000 Affected Products: SUSE LINUX 10.0 Vulnerability Type: denial of service Severity (1-10): 6 SUSE Default Package: yes Cross-References: CVE-2005-2973, CVE-2005-3044, CVE-2005-3055 CVE-2005-3180, CVE-2005-3181, CVE-2005-3271 CVE-2005-3527, CVE-2005-3783, CVE-2005-3784 CVE-2005-3805, CVE-2005-3806, CVE-2005-3807

Content of This Advisory: 1) Security Vulnerability Resolved: Various security fixes, bugfixes and a XEN update Problem Description 2) Solution or Work-Around 3) Special Instructions and Notes 4) Package Location and Checksums 5) Pending Vulnerabilities, Solutions, and Work-Arounds: See SUSE Security Summary Report. 6) Authenticity Verification and Additional Information

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1) Problem Description and Brief Discussion

This kernel update for SUSE Linux 10.0 contains fixes for XEN, various security fixes and bug fixes.

CVE-200n-nnnn numbers refer to Mitre CVE IDs (http://cve.mitre.org/).

This update includes a more recent snapshot of the upcoming XEN 3.0. Many bugs have been fixed. Stability for x86_64 has been improved. Stability has been improved for SMP, and now both i586 and x86_64 kernels are built with SMP support.

This update contains the following security fixes:

- CVE-2005-3783: A check in ptrace(2) handling that finds out if a process is attaching to itself was incorrect and could be used by a local attacker to crash the machine.

- CVE-2005-3784: A check in reaping of terminating child processes did not consider ptrace(2) attached processes and would leave a ptrace reference dangling. This could lead to a local user being able to crash the machine.

- CVE-2005-3271: A task leak problem when releasing POSIX timers was fixed. This could lead to local users causing a local denial of service by exhausting system memory.

- CVE-2005-3805: A locking problem in POSIX timer handling could be used by a local attacker on a SMP system to deadlock the machine.

- CVE-2005-3181: A problem in the Linux auditing code could lead to a memory leak which finally could exhaust system memory of a machine.

- CVE-2005-2973: An infinite loop in the IPv6 UDP loopback handling can be easily triggered by a local user and lead to a denial of service.

- CVE-2005-3806: A bug in IPv6 flow label handling code could be used by a local attacker to free non-allocated memory and in turn corrupt kernel memory and likely crash the machine.

- CVE-2005-3807: A memory kernel leak in VFS lease handling can exhaust the machine memory and so cause a local denial of service. This is seen in regular Samba use and could also be triggered by local attackers.

- CVE-2005-3055: Unplugging an user space controlled USB device with an URB pending in user space could crash the kernel. This can be easily triggered by local attacker.

- CVE-2005-3180: Fixed incorrect padding in Orinoco wireless driver, which could expose kernel data to the air.

- CVE-2005-3044: Missing sockfd_put() calls in routing_ioctl() leaked file handles which in turn could exhaust system memory.

- CVE-2005-3527: A race condition in do_coredump in signal.c allows local users to cause a denial of service (machine hang) by triggering a core dump in one thread while another thread has a pending SIGSTOP.

Additionally the following non security bugs were fixed: - Fix NFS cache consistency races which could lead to data corruption and crashes. - A kernel panic when loading the r8169 module without powermanagment was fixed. - i386: A race condition in the power management module powernow-k8 was fixed. - Special ELF binaries without DATA and BSS segments could not be loaded due to too strict kernel checks. - Various bugs in the ALSA sound system were fixed. - A problem in IPv6 initialization with IPv6 disabled by policy that could leave dangling kernel pointers around was fixed. - Added sis 965l support to the sis5513 ide driver. - Disabled C2/C3 power management states on all IBM R40e BIOSes. - Fixed machine crash when switching the io-scheduler away from CFQ. - Call reboot notifiers of power off to switch off certain machines. - AMD64: Don't use TSC for time keeping on AMD single socket dual core systems. - Fixed the "treason uncloaked" kernel messages that were caused by a stale pred_flags variable when the TCP snd_wnd changes. - USB floppy drive SAMSUNG SFD-321U/EP was detected 8 times. - CONFIG_ACPI_HOTKEY is not supportable yet according to Intel, so we disabled it. - Disable ACPI on machines from before 2001 on all kernels again. - USB: always export interface information for modalias. - Various iSCSI fixes. - Avoid a potential fs corruption on SMP systems. - i386: Increased number of CONFIG_SERIAL_8250_NR_UARTS to 8. - Fixed a data corruption in the MD device driver when the delayed recovery is interrupted. - ahci: Don't set SActive for non-NCQ commands. This could have left the LED burning even for inactivity. - ppc: Handle GCC 4 generated relocations for 32bit memory access in the module loader. - ppc: Removed a special case for ppc to use MAC from prom if CSR is corrupt - CIFS: Made cifsd (kernel daemon for the CIFS filesystem) suspend aware. - Fixed ACPI issues on an ASUS L5D. - IDE: Worked around power management problems. - Disable AMD TLB flush filter on i386/x86-64 (might help 3d drivers) - Quiet down capacity reading from IDE CD when no media inserted. - ACPI: Worked around undefined ZOO* objects on certain Acer Aspire notebooks. - ACPI: Fixed Oops on pcc_acpi unloading. - ACPI: Fix hang in ACPI device scan on certain HP nx Laptops. - Fixed a bug in ACL handling of tmpfs. - Fix time going twice as fast problem on ATI Xpress chip sets.

2) Solution or Work-Around

None, please install the fixed packages.

3) Special Instructions and Notes

SPECIAL INSTALLATION INSTRUCTIONS ================================= The following paragraphs guide you through the installation process in a step-by-step fashion. The character sequence "****" marks the beginning of a new paragraph. In some cases, the steps outlined in a particular paragraph may or may not be applicable to your situation. Therefore, make sure that you read through all of the steps below before attempting any of these procedures. All of the commands that need to be executed must be run as the superuser 'root'. Each step relies on the steps before it to complete successfully.

**** Step 1: Determine the needed kernel type.

Use the following command to determine which kind of kernel is installed on your system:

rpm -qf --qf '%{name}\n' /boot/vmlinuz

**** Step 2: Download the packages for your system.

Download the kernel RPM package for your distribution with the name indicated by Step 1. Starting from SUSE LINUX 9.2, kernel modules that are not free were moved to a separate package with the suffix '-nongpl' in its name. Download that package as well if you rely on hardware that requires non-free drivers, such as some ISDN adapters. The list of all kernel RPM packages is appended below.

The kernel-source package does not contain a binary kernel in bootable form. Instead, it contains the sources that correspond with the binary kernel RPM packages. This package is required to build third party add-on modules.

**** Step 3: Verify authenticity of the packages.

Verify the authenticity of the kernel RPM package using the methods as listed in Section 6 of this SUSE Security Announcement.

**** Step 4: Installing your kernel rpm package.

Install the rpm package that you have downloaded in Step 2 with the command

rpm -Uhv <FILE>

replacing <FILE> with the filename of the RPM package downloaded.

Warning: After performing this step, your system may not boot unless the following steps have been followed completely.

**** Step 5: Configuring and creating the initrd.

The initrd is a RAM disk that is loaded into the memory of your system together with the kernel boot image by the boot loader. The kernel uses the content of this RAM disk to execute commands that must be run before the kernel can mount its root file system. The initrd is typically used to load hard disk controller drivers and file system modules. The variable INITRD_MODULES in /etc/sysconfig/kernel determines which kernel modules are loaded in the initrd.

After a new kernel rpm has been installed, the initrd must be recreated to include the updated kernel modules. Usually this happens automatically when installing the kernel rpm. If creating the initrd fails for some reason, manually run the command

/sbin/mkinitrd

**** Step 6: Update the boot loader, if necessary.

Depending on your software configuration, you either have the LILO or GRUB boot loader installed and initialized on your system. Use the command

grep LOADER_TYPE /etc/sysconfig/bootloader

to find out which boot loader is configured.

The GRUB boot loader does not require any further action after a new kernel has been installed. You may proceed to the next step if you are using GRUB.

If you use the LILO boot loader, lilo must be run to reinitialize the boot sector of the hard disk. Usually this happens automatically when installing the kernel RPM. In case this step fails, run the command

/sbin/lilo

Warning: An improperly installed boot loader will render your system unbootable.

**** Step 7: Reboot.

If all of the steps above have been successfully completed on your system, the new kernel including the kernel modules and the initrd are ready to boot. The system needs to be rebooted for the changes to be active. Make sure that all steps have been completed then reboot using the command

/sbin/shutdown -r now

Your system will now shut down and restart with the new kernel.

4) Package Location and Checksums

The preferred method for installing security updates is to use the YaST Online Update (YOU) tool. YOU detects which updates are required and automatically performs the necessary steps to verify and install them. Alternatively, download the update packages for your distribution manually and verify their integrity by the methods listed in Section 6 of this announcement. Then install the packages using the command

rpm -Fhv <file.rpm>

to apply the update, replacing <file.rpm> with the filename of the downloaded RPM package.

x86 Platform:

SUSE LINUX 10.0: ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/i586/Intel-536ep-4.69-14.2.i586.rpm 02d032c2a4e43516e382faa1c38593ff ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/i586/kernel-bigsmp-2.6.13-15.7.i586.rpm 16ebf82f7f0eb76a7e95239a7748bd49 ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/i586/kernel-bigsmp-nongpl-2.6.13-15.7.i586.rpm 5efbba52b5b452ee68770c234d1c4206 ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/i586/kernel-default-2.6.13-15.7.i586.rpm 201dd3f4f090b01034c2706860a2ded1 ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/i586/kernel-default-nongpl-2.6.13-15.7.i586.rpm 890a9500a671e62c872a316094c976fc ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/i586/kernel-smp-2.6.13-15.7.i586.rpm 3824bd72e5e38f170a1f53cdf12b7936 ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/i586/kernel-smp-nongpl-2.6.13-15.7.i586.rpm f1d4ca38c6f19b92a3ec2bdc4ee55ab7 ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/i586/kernel-source-2.6.13-15.7.i586.rpm 444382d73c4ea88144b58155032f3979 ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/i586/kernel-syms-2.6.13-15.7.i586.rpm 88ddaf01d3cdfc2a02f40c246f27a03f ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/i586/kernel-um-2.6.13-15.7.i586.rpm 4a4282db387b1a50b7f0d8358811955c ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/i586/kernel-um-nongpl-2.6.13-15.7.i586.rpm fd64850adff5fc8fab2a807afc07bac0 ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/i586/kernel-xen-2.6.13-15.7.i586.rpm ec1ccdf16b4c2eadd789871e5bda3361 ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/i586/kernel-xen-nongpl-2.6.13-15.7.i586.rpm ad5b17a6998f04832d29f189a5f42240 ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/i586/um-host-kernel-2.6.13-15.7.i586.rpm 1ed3738e413c0df9a131989560effb85 ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/i586/xen-3.0_7608-2.1.i586.rpm dafe91eab2d6fbe749693373a561609d ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/i586/xen-devel-3.0_7608-2.1.i586.rpm 8a20190de6fef952115623503b2149f9 ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/i586/xen-doc-html-3.0_7608-2.1.i586.rpm 1c27687f9f9482c72fdf300c64d0db4f ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/i586/xen-doc-pdf-3.0_7608-2.1.i586.rpm 356c1d14e0873344b8789e6bf36b94e2 ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/i586/xen-doc-ps-3.0_7608-2.1.i586.rpm 7b9066e6834db4b1eb5505d089830714 ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/i586/xen-tools-3.0_7608-2.1.i586.rpm 43b7333eea6e0e52ce2cb9431a9d3627 ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/i586/xen-tools-ioemu-3.0_7608-2.1.i586.rpm f8d51a8b0119ea984317cad976ca16d5

Power PC Platform:

SUSE LINUX 10.0: ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/ppc/kernel-default-2.6.13-15.7.ppc.rpm b5b4e1ad4db39e8bede52cd0f171c508 ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/ppc/kernel-iseries64-2.6.13-15.7.ppc.rpm a7fbffd1f09d4e6c9a58950fe1692361 ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/ppc/kernel-ppc64-2.6.13-15.7.ppc.rpm a09e0b94d50c24ea8065b709ccb53775 ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/ppc/kernel-source-2.6.13-15.7.ppc.rpm ae4c7ad291aaa37dceb43e331651b2c4 ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/ppc/kernel-syms-2.6.13-15.7.ppc.rpm 51ddc5ea24587d210edb3e249b0472c9

x86-64 Platform:

SUSE LINUX 10.0: ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/x86_64/kernel-default-2.6.13-15.7.x86_64.rpm ae11f5ccb7e1f96d9cb38444d1ae770f ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/x86_64/kernel-default-nongpl-2.6.13-15.7.x86_64.rpm a2f3716cc423c87b8f7505629c13716a ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/x86_64/kernel-smp-2.6.13-15.7.x86_64.rpm 0899d5b37db71c18ac4d7733189388bd ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/x86_64/kernel-smp-nongpl-2.6.13-15.7.x86_64.rpm 108a43a7e5386d1f2b098e31f9299ec1 ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/x86_64/kernel-source-2.6.13-15.7.x86_64.rpm 94f28fdcbeff5b02c95da380808a0347 ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/x86_64/kernel-syms-2.6.13-15.7.x86_64.rpm 2d106be84319cdf38210076c4113a95a ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/x86_64/kernel-xen-2.6.13-15.7.x86_64.rpm 58f4740f9538a21e9e187c751a58a376 ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/x86_64/kernel-xen-nongpl-2.6.13-15.7.x86_64.rpm 3c8a4dd3378a988c79675f9a84a2969c ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/x86_64/xen-3.0_7608-2.1.x86_64.rpm 7595b44074a3d8cc51288e9473c81e0d ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/x86_64/xen-devel-3.0_7608-2.1.x86_64.rpm 135cc2d6855f10518bbf6555405dd63d ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/x86_64/xen-doc-html-3.0_7608-2.1.x86_64.rpm 481e6f688096bb367c35a67fb2185504 ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/x86_64/xen-doc-pdf-3.0_7608-2.1.x86_64.rpm 7f67dd3c63742fb07f424ff7cd1f87b3 ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/x86_64/xen-doc-ps-3.0_7608-2.1.x86_64.rpm e768c5066b488a556496574bccbda414 ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/x86_64/xen-tools-3.0_7608-2.1.x86_64.rpm 118c0e872deb66309fc9c6957969bad4 ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/x86_64/xen-tools-ioemu-3.0_7608-2.1.x86_64.rpm 00ecbc085cb200937224d8a2bbda3ec7

Sources:

SUSE LINUX 10.0: ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/src/Intel-536ep-4.69-14.2.src.rpm c4ee0c5893efbde6ecf45f0da05e5103 ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/src/kernel-source-2.6.13-15.7.src.rpm 56dd71a804ebcaa1eb8268665dfa2b18 ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/src/xen-3.0_7608-2.1.src.rpm 3571ce3e27ca472bffc2f2794eeae8a0

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5) Pending Vulnerabilities, Solutions, and Work-Arounds:

See SUSE Security Summary Report. ______________________________________________________________________________

6) Authenticity Verification and Additional Information

- Announcement authenticity verification:

SUSE security announcements are published via mailing lists and on Web sites. The authenticity and integrity of a SUSE security announcement is guaranteed by a cryptographic signature in each announcement. All SUSE security announcements are published with a valid signature.

To verify the signature of the announcement, save it as text into a file and run the command

gpg --verify <file>

replacing <file> with the name of the file where you saved the announcement. The output for a valid signature looks like:

gpg: Signature made <DATE> using RSA key ID 3D25D3D9 gpg: Good signature from "SuSE Security Team security@suse.de"

where <DATE> is replaced by the date the document was signed.

If the security team's key is not contained in your key ring, you can import it from the first installation CD. To import the key, use the command

gpg --import gpg-pubkey-3d25d3d9-36e12d04.asc

- Package authenticity verification:

SUSE update packages are available on many mirror FTP servers all over the world. While this service is considered valuable and important to the free and open source software community, the authenticity and the integrity of a package needs to be verified to ensure that it has not been tampered with.

There are two verification methods that can be used independently from each other to prove the authenticity of a downloaded file or RPM package:

1) Using the internal gpg signatures of the rpm package 2) MD5 checksums as provided in this announcement

1) The internal rpm package signatures provide an easy way to verify the authenticity of an RPM package. Use the command

rpm -v --checksig <file.rpm>

to verify the signature of the package, replacing <file.rpm> with the filename of the RPM package downloaded. The package is unmodified if it contains a valid signature from build@suse.de with the key ID 9C800ACA.

This key is automatically imported into the RPM database (on RPMv4-based distributions) and the gpg key ring of 'root' during installation. You can also find it on the first installation CD and at the end of this announcement.

2) If you need an alternative means of verification, use the md5sum command to verify the authenticity of the packages. Execute the command

md5sum <filename.rpm>

after you downloaded the file from a SUSE FTP server or its mirrors. Then compare the resulting md5sum with the one that is listed in the SUSE security announcement. Because the announcement containing the checksums is cryptographically signed (by security@suse.de), the checksums show proof of the authenticity of the package if the signature of the announcement is valid. Note that the md5 sums published in the SUSE Security Announcements are valid for the respective packages only. Newer versions of these packages cannot be verified.

- SUSE runs two security mailing lists to which any interested party may subscribe:

suse-security@suse.com - General Linux and SUSE security discussion. All SUSE security announcements are sent to this list. To subscribe, send an e-mail to suse-security-subscribe@suse.com.

suse-security-announce@suse.com - SUSE's announce-only mailing list. Only SUSE's security announcements are sent to this list. To subscribe, send an e-mail to suse-security-announce-subscribe@suse.com.

For general information or the frequently asked questions (FAQ), send mail to suse-security-info@suse.com or suse-security-faq@suse.com.

===================================================================== SUSE's security contact is security@suse.com or security@suse.de. The security@suse.de public key is listed below. ===================================================================== ______________________________________________________________________________

The information in this advisory may be distributed or reproduced, provided that the advisory is not modified in any way. In particular, the clear text signature should show proof of the authenticity of the text.

SUSE Linux Products GmbH provides no warranties of any kind whatsoever with respect to the information contained in this security advisory.

Type Bits/KeyID Date User ID pub 2048R/3D25D3D9 1999-03-06 SuSE Security Team security@suse.de pub 1024D/9C800ACA 2000-10-19 SuSE Package Signing Key build@suse.de

- -----BEGIN PGP PUBLIC KEY BLOCK----- Version: GnuPG v1.0.6 (GNU/Linux) Comment: For info see http://www.gnupg.org

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