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SUSE alert SUSE-SA:2011:041 (kernel)

From:  Marcus Meissner <meissner@suse.de>
To:  opensuse-security-announce@opensuse.org
Subject:  [security-announce] SUSE Security Announcement: Linux kernel (SUSE-SA:2011:041)
Date:  Mon, 17 Oct 2011 17:58:35 +0200
Message-ID:  <4e9c50ab.cJYkaj+uLzW+VNWr%meissner@suse.de>
Archive-link:  Article, Thread

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ______________________________________________________________________________ SUSE Security Announcement Package: kernel Announcement ID: SUSE-SA:2011:041 Date: Mon, 17 Oct 2011 16:00:00 +0000 Affected Products: SUSE Linux Enterprise High Availability Extension 11 SP1 SUSE Linux Enterprise Desktop 11 SP1 SUSE Linux Enterprise Server 11 SP1 Vulnerability Type: denial of service CVSS v2 Base Score: 4.9 (AV:L/AC:L/Au:N/C:N/I:N/A:C) SUSE Default Package: yes Cross-References: CVE-2011-2928, CVE-2011-3191, CVE-2011-3353 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: none 6) Authenticity Verification and Additional Information ______________________________________________________________________________ 1) Problem Description and Brief Discussion The SUSE Linux Enterprise 11 Service Pack 1 kernel was updated to 2.6.32.46 and fixes various bugs and security issues. Following security issues were fixed: CVE-2011-3191: A signedness issue in CIFS could possibly have lead to to memory corruption, if a malicious server could send crafted replies to the host. CVE-2011-3353: In the fuse filesystem, FUSE_NOTIFY_INVAL_ENTRY did not check the length of the write so the message processing could overrun and result in a BUG_ON() in fuse_copy_fill(). This flaw could be used by local users able to mount FUSE filesystems to crash the system. CVE-2011-2928: The befs_follow_link function in fs/befs/linuxvfs.c in the Linux kernel did not validate the length attribute of long symlinks, which allowed local users to cause a denial of service (incorrect pointer dereference and OOPS) by accessing a long symlink on a malformed Be filesystem. Also the following non security bugs were fixed: - Added a missing reset for ioc_reset_in_progress in SoftReset in the mtpsas driver (bnc#711969). - Add support for the Digi/IBM PCIe 2-port Adapter (bnc#708675). - Always enable MSI-X on 5709 (bnc#707737). - sched: fix broken SCHED_RESET_ON_FORK handling (bnc#708877). - sched: Fix rt_rq runtime leakage bug (bnc#707096). - ACPI: allow passing down C1 information if no other C-states exist. - KDB: turn off kdb usb support by default (bnc#694670 bnc#603804). - xfs: Added event tracing support. - xfs: fix xfs_fsblock_t tracing. - igb: extend maximum frame size to receive VLAN tagged frames (bnc#688859). - cfq: Do not allow queue merges for queues that have no process references (bnc#712929). - cfq: break apart merged cfqqs if they stop cooperating (bnc#712929). - cfq: calculate the seek_mean per cfq_queue not per cfq_io_context (bnc#712929). - cfq: change the meaning of the cfqq_coop flag (bnc#712929). - cfq-iosched: get rid of the coop_preempt flag (bnc#712929). - cfq: merge cooperating cfq_queues (bnc#712929). - Fix FDDI and TR config checks in ipv4 arp and LLC (bnc#715235). - writeback: do uninterruptible sleep in balance_dirty_pages() (bnc#699354 bnc#699357). - xfs: fix memory reclaim recursion deadlock on locked inode buffer (bnc#699355 bnc#699354). - xfs: use GFP_NOFS for page cache allocation (bnc#699355 bnc#699354). - virtio-net: init link state correctly (bnc#714966). - cpufreq: pcc-cpufreq: sanity check to prevent a NULL pointer dereference (bnc#709412). - x86: ucode-amd: Do not warn when no ucode is available for a CPU - patches.arch/x86_64-unwind-annotations: Refresh (bnc#588458). - patches.suse/stack-unwind: Refresh (bnc#588458). - splice: direct_splice_actor() should not use pos in sd (bnc#715763). - qdio: 2nd stage retry on SIGA-W busy conditions (bnc#713138, LTC#74402). - TTY: pty, fix pty counting (bnc#711203). - Avoid deadlock in GFP_IO/GFP_FS allocation (bnc#632870). - novfs: fix some DirCache locking issues (bnc#669378). - novfs: fix some kmalloc/kfree issues (bnc#669378). - novfs: fix off-by-one allocation error (bnc#669378). - novfs: unlink directory after unmap (bnc#649625). - novfs: last modification time not reliable (bnc#642896). - x86 / IO APIC: Reset IRR in clear_IO_APIC_pin() (bnc#701686, bnc#667386). - mptfusion : Added check for SILI bit in READ_6 CDB for DATA UNDERRUN ERRATA (bnc #712456). - xfs: serialize unaligned direct IOs (bnc#707125). - NFS: Ensure that we handle NFS4ERR_STALE_STATEID correctly (bnc#701443). - NFSv4: Do not call nfs4_state_mark_reclaim_reboot() from error handlers (bnc#701443). - NFSv4: Fix open recovery (bnc#701443). - NFSv4.1: Do not call nfs4_schedule_state_recovery() unnecessarily (bnc#701443) 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" module or the "zypper" commandline tool. The package and patch management stack will detect which updates are required and automatically perform 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. Our maintenance customers are notified individually. The packages are offered for installation from the maintenance web: SUSE Linux Enterprise High Availability Extension 11 SP1 http://download.novell.com/patch/finder/?keywords=20cb09e... http://download.novell.com/patch/finder/?keywords=94fa14c... http://download.novell.com/patch/finder/?keywords=9a7f619... http://download.novell.com/patch/finder/?keywords=959314d... http://download.novell.com/patch/finder/?keywords=56d0712... SUSE Linux Enterprise Desktop 11 SP1 http://download.novell.com/patch/finder/?keywords=959314d... http://download.novell.com/patch/finder/?keywords=56d0712... SUSE Linux Enterprise Server 11 SP1 http://download.novell.com/patch/finder/?keywords=20cb09e... http://download.novell.com/patch/finder/?keywords=94fa14c... http://download.novell.com/patch/finder/?keywords=9a7f619... http://download.novell.com/patch/finder/?keywords=959314d... http://download.novell.com/patch/finder/?keywords=56d0712... ______________________________________________________________________________ 5) Pending Vulnerabilities, Solutions, and Work-Arounds: none ______________________________________________________________________________ 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. 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. - 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+subscribe@opensuse.org>. 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 <opensuse-security-announce+subscribe@opensuse.org>. ===================================================================== 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. 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