SuSE: 2011-046: Linux kernel security update Security Update
Summary
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
______________________________________________________________________________
SUSE Security Announcement
Package: kernel
Announcement ID: SUSE-SA:2011:046
Date: Tue, 13 Dec 2011 17:00:00 +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: remote denial of service
CVSS v2 Base Score: 5.7 (AV:A/AC:M/Au:N/C:N/I:N/A:C)
SUSE Default Package: yes
Cross-References: CVE-2011-1478, CVE-2011-1576, CVE-2011-1833
CVE-2011-2203, CVE-2011-2699, CVE-2011-3188
CVE-2011-4326, CVE-2011-4330
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
2.6.32.49 and fixes various bugs and security issues.
Following security bugs were fixed:
CVE-2011-3188: The TCP/IP initial sequence number generation
effectively only used 24 bits of 32 to generate randomness, making
a brute force man-in-the-middle attack on TCP/IP connections
feasible. The generator was changed to use full 32bit randomness.
CVE-2011-2699: Fernando Gont discovered that the IPv6 stack used
predictable fragment identification numbers. A remote attacker
could exploit this to exhaust network resources, leading to a denial
of service.
CVE-2011-2203: A NULL ptr dereference on mounting corrupt hfs
filesystems was fixed which could be used by local attackers to crash
the kernel.
CVE-2011-1833: Added a kernel option to ensure ecryptfs is mounting
only on paths belonging to the current ui, which would have allowed
local attackers to potentially gain privileges via symlink attacks.
CVE-2011-1576: The Generic Receive Offload (GRO) implementation in the
Linux kernel allowed remote attackers to cause a denial of service
via crafted VLAN packets that are processed by the napi_reuse_skb
function, leading to (1) a memory leak or (2) memory corruption,
a different vulnerability than CVE-2011-1478.
CVE-2011-4330: A name overflow in the hfs filesystem was fixed, where
mounting a corrupted hfs filesystem could lead to a stack overflow
and code execution in the kernel. This requires a local attacker to
be able to mount hfs filesystems.
CVE-2011-4326: A bug was found in the way headroom check was performed
in udp6_ufo_fragment() function. A remote attacker could use this
flaw to crash the system.
Following non-security bugs were fixed:
- ALSA: hda - Fix S3/S4 problem on machines with VREF-pin mute-LED
(bnc#732535).
- patches.xen/xen-pcpu-hotplug: Fix a double kfree().
- ixgbe: fix bug with vlan strip in promisc mode (bnc#687049,
fate#311821).
- ixgbe: fix panic when shutting down system with WoL enabled.
- fnic: Allow users to modify dev_loss_tmo setting (bnc#719786).
- x86, intel: Do not mark sched_clock() as stable (bnc#725709).
- ALSA: hda - Keep vref-LED during power-saving on IDT codecs
(bnc#731981).
- cifs: Assume passwords are encoded according to iocharset
(bnc#731035).
- scsi_dh: Check queuedata pointer before proceeding (bnc#714744).
- netback: use correct index for invalidation in netbk_tx_check_mop().
- ACPI video: introduce module parameter
video.use_bios_initial_backlight (bnc#731229).
- SUNRPC: prevent task_cleanup running on freed xprt (bnc#709671).
- add device entry for Broadcom Valentine combo card (bnc#722429).
- quota: Fix WARN_ON in lookup_one_len (bnc#728626).
- Update Xen patches to 2.6.32.48.
- pv-on-hvm/kexec: add xs_reset_watches to shutdown watches from old
kernel (bnc#694863).
- x86: undo_limit_pages() must reset page count.
- mm/vmstat.c: cache align vm_stat (bnc#729721).
- s390/ccwgroup: fix uevent vs dev attrs race (bnc#659101,LTC#69028).
- Warn on pagecache limit usage (FATE309111).
- SCSI: st: fix race in st_scsi_execute_end (bnc#720536).
- ACPI: introduce "acpi_rsdp=" parameter for kdump (bnc#717263).
- elousb: Limit the workaround warning to one per error, control
workaround activity (bnc#719916).
- SCSI: libiscsi: reset cmd timer if cmds are making progress (bnc#691440).
- SCSI: fix crash in scsi_dispatch_cmd() (bnc#724989).
- NFS/sunrpc: do not use a credential with extra groups (bnc#725878).
- s390/qdio: EQBS retry after CCQ 96 (bnc#725453,LTC#76117).
- fcoe: Reduce max_sectors to 1024 (bnc#695898).
- apparmor: return -ENOENT when there is no profile for a hat (bnc#725502).
- sched, cgroups: disallow attaching kthreadd (bnc#721840).
- nfs: Check validity of cl_rpcclient in nfs_server_list_show (bnc#717884).
- x86, vt-d: enable x2apic opt out (disabling x2apic through BIOS flag)
(bnc#701183, fate#311989).
- block: Free queue resources at blk_release_queue() (bnc#723815).
- ALSA: hda - Add post_suspend patch ops (bnc#724800).
- ALSA: hda - Allow codec-specific set_power_state ops (bnc#724800).
- ALSA: hda - Add support for vref-out based mute LED control on IDT
codecs (bnc#724800).
- scsi_dh_rdac : Add definitions for different RDAC operating modes (bnc#724365).
- scsi_dh_rdac : Detect the different RDAC operating modes (bnc#724365).
- scsi_dh_rdac : decide whether to send mode select based on operating mode (bnc#724365).
- scsi_dh_rdac: Use WWID from C8 page instead of Subsystem id from
C4 page to identify storage (bnc#724365).
- vlan: Match underlying dev carrier on vlan add (bnc#722504).
- scsi_lib: pause between error retries (bnc#675127).
- xfs: use KM_NOFS for allocations during attribute list operations (bnc#721830).
- bootsplash: Do not crash when no fb is set (bnc#723542).
- cifs: do not allow cifs_iget to match inodes of the wrong type (bnc#711501).
- cifs: fix noserverino handling when 1 extensions are enabled (bnc#711501).
- cifs: reduce false positives with inode aliasing serverino autodisable (bnc#711501).
- parport_pc: release IO region properly if unsupported ITE887x card
is found (bnc#721464).
- writeback: avoid unnecessary calculation of bdi dirty thresholds (bnc#721299).
- 1: Fix bogus it_blocksize in VIO iommu code (bnc#717690).
- ext4: Fix max file size and logical block counting of extent format
file (bnc#706374).
- novfs: Unable to change password in the Novell Client for Linux (bnc#713229).
- xfs: add more ilock tracing.
- sched: move wakeup tracepoint above out_running (bnc#712002).
- config.conf: Build KMPs for the -trace flavor as well
(fate#312759, bnc#712404, bnc#712405, bnc#721337).
- memsw: remove noswapaccount kernel parameter (bnc#719450).
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
References
