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SUSE alert SUSE-SA:2010:039 (kernel)

From:  Marcus Meissner <>
Subject:  [security-announce] SUSE Security Announcement: Linux kernel (SUSE-SA:2010:039)
Date:  Wed, 08 Sep 2010 15:41:48 +0200
Message-ID:  <>

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ______________________________________________________________________________ SUSE Security Announcement Package: kernel Announcement ID: SUSE-SA:2010:039 Date: Wed, 08 Sep 2010 15:00:00 +0000 Affected Products: openSUSE 11.3 Vulnerability Type: local privilege escalation CVSS v2 Base Score: 6.9 (AV:L/AC:M/Au:N/C:C/I:C/A:C) SUSE Default Package: yes Cross-References: CVE-2010-2524, CVE-2010-2537, CVE-2010-2538 CVE-2010-2798, CVE-2010-3110 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 This update of the openSUSE 11.3 kernel brings the kernel to version and contains a lot of bug and security fixes CVE-2010-3110: Missing bounds checks in several ioctls of the Novell Client novfs /proc interface allowed unprivileged local users to crash the kernel or even execute code in kernel context. The affected module is only loaded when the Novell Client stack is configured. CVE-2010-2524: A malicious local user could fill the cache used by CIFS do perform dns lookups with chosen data, therefore tricking the kernel into mounting a wrong CIFS server. CVE-2010-2798: A local user could trigger a NULL dereference on a gfs2 file system. CVE-2010-2537: A local user could overwrite append-only files on a btrfs file system. CVE-2010-2538: A local user could read kernel memory of a btrfs file system. 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 <file.rpm> to apply the update, replacing <file.rpm> with the filename of the downloaded RPM package. x86 Platform: openSUSE 11.3: Platform Independent: openSUSE 11.3: x86-64 Platform: openSUSE 11.3: Sources: openSUSE 11.3: ______________________________________________________________________________ 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 <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 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: - General Linux and SUSE security discussion. All SUSE security announcements are sent to this list. To subscribe, send an e-mail to <>. - 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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