-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ______________________________________________________________________________ SUSE Security Announcement Package: kernel Announcement ID: SUSE-SA:2009:056 Date: Mon, 16 Nov 2009 13:00:00 +0000 Affected Products: SUSE SLES 9 Novell Linux Desktop 9 Novell Linux POS 9 Vulnerability Type: local privilege escalation Severity (1-10): 7 SUSE Default Package: yes Cross-References: CVE-2009-1192, CVE-2009-1633, CVE-2009-2848 CVE-2009-2909, CVE-2009-2910, CVE-2009-3002 CVE-2009-3547, CVE-2009-3726 Content of This Advisory: 1) Security Vulnerability Resolved: Linux kernel security 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 ______________________________________________________________________________ 1) Problem Description and Brief Discussion Several security issues and some bugs were fixed in the SUSE Linux Enterprise 9 kernel. Following security bugs were fixed: CVE-2009-3547: A race condition in the pipe(2) system call could be used by local attackers to execute code and escalate privileges. CVE-2009-2910: On x86_64 systems a information leak of high register contents (upper 32bit) was fixed. CVE-2009-1192: The (1) agp_generic_alloc_page and (2) agp_generic_alloc_pages functions in drivers/char/agp/generic.c in the agp subsystem in the Linux kernel do not zero out pages that may later be available to a user-space process, which allows local users to obtain sensitive information by reading these pages. CVE-2009-2909: Unsigned check in the ax25 socket handler could allow local attackers to potentially crash the kernel or even execute code. CVE-2009-2848: The execve function in the Linux kernel did not properly clear the current->clear_child_tid pointer, which allows local users to cause a denial of service (memory corruption) or possibly gain privileges via a clone system call with CLONE_CHILD_SETTID or CLONE_CHILD_CLEARTID enabled, which is not properly handled during thread creation and exit. CVE-2009-3002: Fixed various socket handler getname leaks, which could disclose memory previously used by the kernel or other userland processes to the local attacker. CVE-2009-1633: Multiple buffer overflows in the cifs subsystem in the Linux kernel allow remote CIFS servers to cause a denial of service (memory corruption) and possibly have unspecified other impact via (1) a malformed Unicode string, related to Unicode string area alignment in fs/cifs/sess.c; or (2) long Unicode characters, related to fs/cifs/cifssmb.c and the cifs_readdir function in fs/cifs/readdir.c. CVE-2009-3726: The nfs4_proc_lock function in fs/nfs/nfs4proc.c in the NFSv4 client in the allows remote NFS servers to cause a denial of service (NULL pointer dereference and panic) by sending a certain response containing incorrect file attributes, which trigger attempted use of an open file that lacks NFSv4 state. For a complete list of changes, please refer to the RPM changelog. 2) Solution or Work-Around There is no known workaround, please install the update packages. 3) Special Instructions and Notes Reboot the machine after installing the update. 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 to apply the update, replacing with the filename of the downloaded RPM package. Our maintenance customers are notified individually. The packages are offered for installation from the maintenance web: SUSE CORE 9 for IBM zSeries 64bit http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=77ed33379952aaf1e23ae495aab9c221 SUSE CORE 9 for IBM S/390 31bit http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=51eb79501b8e03bf515dafcfc5d912b0 SUSE CORE 9 for AMD64 and Intel EM64T http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=b26c54164a036ab3b436997e2b5c5874 SUSE CORE 9 for IBM POWER http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=8d6ae4279786eaab2134168e22490f95 SUSE CORE 9 for Itanium Processor Family http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=7647ad06193e496ce89cc593ea9d19da Novell Linux POS 9 http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=66a3e66c695dceba429e6e5538741b7d SUSE SLES 9 http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=77ed33379952aaf1e23ae495aab9c221 http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=51eb79501b8e03bf515dafcfc5d912b0 http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=b26c54164a036ab3b436997e2b5c5874 http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=8d6ae4279786eaab2134168e22490f95 http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=7647ad06193e496ce89cc593ea9d19da http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=66a3e66c695dceba429e6e5538741b7d SUSE CORE 9 for x86 http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=66a3e66c695dceba429e6e5538741b7d Novell Linux Desktop 9 http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=1f8052e3d1888101d98fed2d234ab541 Novell Linux Desktop 9 for x86_64 http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=1f8052e3d1888101d98fed2d234ab541 ______________________________________________________________________________ 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 " 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. The internal rpm package signatures provide an easy way to verify the authenticity of an RPM package. Use the command rpm -v --checksig to verify the signature of the package, replacing 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. - SUSE runs two security mailing lists to which any interested party may subscribe: opensuse-security@opensuse.org - General Linux and SUSE security discussion. All SUSE security announcements are sent to this list. To subscribe, send an e-mail to . opensuse-security-announce@opensuse.org - SUSE's announce-only mailing list. Only SUSE's security announcements are sent to this list. To subscribe, send an e-mail to . ===================================================================== SUSE's security contact is or . The 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. 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