-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ______________________________________________________________________________ SUSE Security Announcement Package: kernel Announcement ID: SUSE-SA:2009:028 Date: Wed, 20 May 2009 18:00:00 +0000 Affected Products: SLE SDK 10 SP2 SUSE Linux Enterprise Desktop 10 SP2 SUSE Linux Enterprise 10 SP2 DEBUGINFO SUSE Linux Enterprise Server 10 SP2 Vulnerability Type: potential remote code execution Severity (1-10): 8 SUSE Default Package: yes Cross-References: CVE-2009-0834, CVE-2009-0835, CVE-2009-0859 CVE-2009-1072, CVE-2009-1265, CVE-2009-1337 CVE-2009-1439 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 The Linux kernel on SUSE Linux Enterprise 10 Service Pack 2 was updated to fix various security issues and several bugs. Following security issues were fixed: CVE-2009-0834: The audit_syscall_entry function in the Linux kernel on the x86_64 platform did not properly handle (1) a 32-bit process making a 64-bit syscall or (2) a 64-bit process making a 32-bit syscall, which allows local users to bypass certain syscall audit configurations via crafted syscalls. CVE-2009-1072: nfsd in the Linux kernel did not drop the CAP_MKNOD capability before handling a user request in a thread, which allows local users to create device nodes, as demonstrated on a filesystem that has been exported with the root_squash option. CVE-2009-0835: The __secure_computing function in kernel/seccomp.c in the seccomp subsystem in the Linux kernel on the x86_64 platform, when CONFIG_SECCOMP is enabled, does not properly handle (1) a 32-bit process making a 64-bit syscall or (2) a 64-bit process making a 32-bit syscall, which allows local users to bypass intended access restrictions via crafted syscalls that are misinterpreted as (a) stat or (b) chmod. CVE-2009-1439: Buffer overflow in fs/cifs/connect.c in CIFS in the Linux kernel 2.6.29 and earlier allows remote attackers to cause a denial of service (crash) or potential code execution via a long nativeFileSystem field in a Tree Connect response to an SMB mount request. This requires that kernel can be made to mount a "cifs" filesystem from a malicious CIFS server. CVE-2009-1337: The exit_notify function in kernel/exit.c in the Linux kernel did not restrict exit signals when the CAP_KILL capability is held, which allows local users to send an arbitrary signal to a process by running a program that modifies the exit_signal field and then uses an exec system call to launch a setuid application. CVE-2009-0859: The shm_get_stat function in ipc/shm.c in the shm subsystem in the Linux kernel, when CONFIG_SHMEM is disabled, misinterprets the data type of an inode, which allows local users to cause a denial of service (system hang) via an SHM_INFO shmctl call, as demonstrated by running the ipcs program. (SUSE is enabling CONFIG_SHMEM, so is by default not affected, the fix is just for completeness). The GCC option -fwrapv has been added to compilation to work around potentially removing integer overflow checks. CVE-2009-1265: Integer overflow in rose_sendmsg (sys/net/af_rose.c) in the Linux kernel might allow attackers to obtain sensitive information via a large length value, which causes "garbage" memory to be sent. Also a number of bugs were fixed, for details please see the RPM changelog. 2) Solution or Work-Around There is no known workaround, please install the update packages. 3) Special Instructions and Notes Please 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 Linux Enterprise Desktop 10 SP2 for AMD64 and Intel EM64T http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=ae34197f7a01df2900bcf50d77b9b261 SUSE Linux Enterprise 10 SP2 DEBUGINFO for IBM zSeries 64bit http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=c01a06a3f2e0ecc3efed9c1bbee7c1db SUSE Linux Enterprise 10 SP2 DEBUGINFO for IBM POWER http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=4dfac144676df4f2b5aa5031accd9b6e SUSE Linux Enterprise 10 SP2 DEBUGINFO for IPF http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=9775d38cea566d73fa029239a914a5b7 SUSE Linux Enterprise Server 10 SP2 http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=ae34197f7a01df2900bcf50d77b9b261 http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=c01a06a3f2e0ecc3efed9c1bbee7c1db http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=4dfac144676df4f2b5aa5031accd9b6e http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=9775d38cea566d73fa029239a914a5b7 http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=b188d90943ea173782dd6e41e9050957 SLE SDK 10 SP2 http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=ae34197f7a01df2900bcf50d77b9b261 http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=4dfac144676df4f2b5aa5031accd9b6e http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=9775d38cea566d73fa029239a914a5b7 http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=b188d90943ea173782dd6e41e9050957 SUSE Linux Enterprise 10 SP2 DEBUGINFO http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=ae34197f7a01df2900bcf50d77b9b261 http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=4dfac144676df4f2b5aa5031accd9b6e http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=9775d38cea566d73fa029239a914a5b7 http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=b188d90943ea173782dd6e41e9050957 SUSE Linux Enterprise Desktop 10 SP2 http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=ae34197f7a01df2900bcf50d77b9b261 http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=b188d90943ea173782dd6e41e9050957 SUSE Linux Enterprise Desktop 10 SP2 for x86 http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=b188d90943ea173782dd6e41e9050957 ______________________________________________________________________________ 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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