Executive Summary
Summary | |
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Title | kernel security and bug fix update |
Informations | |||
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Name | RHSA-2011:1849 | First vendor Publication | 2011-12-22 |
Vendor | RedHat | Last vendor Modification | 2011-12-22 |
Severity (Vendor) | Important | Revision | 01 |
Security-Database Scoring CVSS v3
Cvss vector : N/A | |||
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Overall CVSS Score | NA | ||
Base Score | NA | Environmental Score | NA |
impact SubScore | NA | Temporal Score | NA |
Exploitabality Sub Score | NA | ||
Calculate full CVSS 3.0 Vectors scores |
Security-Database Scoring CVSS v2
Cvss vector : (AV:L/AC:L/Au:N/C:P/I:P/A:P) | |||
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Cvss Base Score | 4.6 | Attack Range | Local |
Cvss Impact Score | 6.4 | Attack Complexity | Low |
Cvss Expoit Score | 3.9 | Authentication | None Required |
Calculate full CVSS 2.0 Vectors scores |
Detail
Problem Description: Updated kernel packages that fix one security issue and various bugs are now available for Red Hat Enterprise Linux 6. The Red Hat Security Response Team has rated this update as having important security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section. 2. Relevant releases/architectures: Red Hat Enterprise Linux Desktop (v. 6) - i386, noarch, x86_64 Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, x86_64 Red Hat Enterprise Linux HPC Node (v. 6) - noarch, x86_64 Red Hat Enterprise Linux HPC Node Optional (v. 6) - x86_64 Red Hat Enterprise Linux Server (v. 6) - i386, noarch, ppc64, s390x, x86_64 Red Hat Enterprise Linux Server Optional (v. 6) - i386, ppc64, s390x, x86_64 Red Hat Enterprise Linux Workstation (v. 6) - i386, noarch, x86_64 Red Hat Enterprise Linux Workstation Optional (v. 6) - i386, x86_64 3. Description: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security fix: * Using the SG_IO IOCTL to issue SCSI requests to partitions or LVM volumes resulted in the requests being passed to the underlying block device. If a privileged user only had access to a single partition or LVM volume, they could use this flaw to bypass those restrictions and gain read and write access (and be able to issue other SCSI commands) to the entire block device. In KVM (Kernel-based Virtual Machine) environments using raw format virtio disks backed by a partition or LVM volume, a privileged guest user could bypass intended restrictions and issue read and write requests (and other SCSI commands) on the host, and possibly access the data of other guests that reside on the same underlying block device. Partition-based and LVM-based storage pools are not used by default. Refer to Red Hat Bugzilla bug 752375 for further details and a mitigation script for users who cannot apply this update immediately. (CVE-2011-4127, Important) Bug fixes: * Previously, idle load balancer kick requests from other CPUs could be serviced without first receiving an inter-processor interrupt (IPI). This could have led to a deadlock. (BZ#750459) * This update fixes a performance regression that may have caused processes (including KVM guests) to hang for a number of seconds. (BZ#751403) * When md_raid1_unplug_device() was called while holding a spinlock, under certain device failure conditions, it was possible for the lock to be requested again, deeper in the call chain, causing a deadlock. Now, md_raid1_unplug_device() is no longer called while holding a spinlock. (BZ#755545) * In hpet_next_event(), an interrupt could have occurred between the read and write of the HPET (High Performance Event Timer) and the value of HPET_COUNTER was then beyond that being written to the comparator (HPET_Tn_CMP). Consequently, the timers were overdue for up to several minutes. Now, a comparison is performed between the value of the counter and the comparator in the HPET code. If the counter is beyond the comparator, the "-ETIME" error code is returned. (BZ#756426) * Index allocation in the virtio-blk module was based on a monotonically increasing variable "index". Consequently, released indexes were not reused and after a period of time, no new were available. Now, virtio-blk uses the ida API to allocate indexes. (BZ#756427) * A bug related to Context Caching existed in the Intel IOMMU support module. On some newer Intel systems, the Context Cache mode has changed from previous hardware versions, potentially exposing a Context coherency race. The bug was exposed when performing a series of hot plug and unplug operations of a Virtual Function network device which was immediately configured into the network stack, i.e., successfully performed dynamic host configuration protocol (DHCP). When the coherency race occurred, the assigned device would not work properly in the guest virtual machine. With this update, the Context coherency is corrected and the race and potentially resulting device assignment failure no longer occurs. (BZ#757671) * The align_va_addr kernel parameter was ignored if secondary CPUs were initialized. This happened because the parameter settings were overridden during the initialization of secondary CPUs. Also, the align_va_addr parameter documentation contained incorrect parameter arguments. With this update, the underlying code has been modified to prevent the overriding and the documentation has been updated. This update also removes the unused code introduced by the patch for BZ#73945 |
Original Source
Url : https://rhn.redhat.com/errata/RHSA-2011-1849.html |
CWE : Common Weakness Enumeration
% | Id | Name |
---|---|---|
100 % | CWE-264 | Permissions, Privileges, and Access Controls |
OVAL Definitions
Definition Id: oval:org.mitre.oval:def:27277 | |||
Oval ID: | oval:org.mitre.oval:def:27277 | ||
Title: | DEPRECATED: ELSA-2011-1849 -- kernel security and bug fix update (important) | ||
Description: | [2.6.32-220.2.1.el6] - [dm] fixing test for NULL pointer testing (Paolo Bonzini) [752379 752380] {CVE-2011-4127} [2.6.32-220.1.1.el6] - [dm] do not forward ioctls from logical volumes to the underlying device (Paolo Bonzini) [752379 752380] {CVE-2011-4127} - [block] fail SCSI passthrough ioctls on partition devices (Paolo Bonzini) [752379 752380] {CVE-2011-4127} - [block] add and use scsi_blk_cmd_ioctl (Paolo Bonzini) [752379 752380] {CVE-2011-4127} - [x86] amd: Fix align_va_addr kernel parameter (Frank Arnold) [758028 753237] - [md] RAID1: Do not call md_raid1_unplug_device while holding spinlock (Jonathan E Brassow) [755545 752528] - [pci] intel-iommu: Default to non-coherent for domains unattached to iommus (Don Dutile) [757671 746484] - [x86] initialize min_delta_ns in one_hpet_msi_clockevent() (Prarit Bhargava) [756426 728315] - [x86] Update hpet_next_event() (Prarit Bhargava) [756426 728315] - [kernel] sched: Use resched IPI to kick off the nohz idle balance (Vivek Goyal) [750459 717179] - [drm] i915: enable ring freq scaling, RC6 and graphics turbo on Ivy Bridge (Prarit Bhargava) [758513 752163] - [drm] i915: load a ring frequency scaling table (Prarit Bhargava) [758513 752163] - [x86] cpufreq: expose a cpufreq_quick_get_max routine (Prarit Bhargava) [758513 752163] - [sched] Cleanup/optimize clock updates (Larry Woodman) [751403 750237] - [sched] fix skip_clock_update optimization (Larry Woodman) [751403 750237] - [block] virtio-blk: Use ida to allocate disk index (Michael S. Tsirkin) [756427 692767] - [virt] virtio_blk: Replace cryptic number with the macro (Michael S. Tsirkin) [756427 692767] - [kernel] ida: simplified functions for id allocation (Michael S. Tsirkin) [756427 692767] - [virt] revert virtio-blk: Use ida to allocate disk index (Aristeu Rozanski) [756427 692767] | ||
Family: | unix | Class: | patch |
Reference(s): | ELSA-2011-1849 CVE-2011-4127 | Version: | 4 |
Platform(s): | Oracle Linux 6 | Product(s): | kernel |
Definition Synopsis: | |||
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CPE : Common Platform Enumeration
OpenVAS Exploits
Date | Description |
---|---|
2013-09-18 | Name : Debian Security Advisory DSA 2389-1 (linux-2.6 - privilege escalation/denial ... File : nvt/deb_2389_1.nasl |
2012-12-18 | Name : Fedora Update for kernel FEDORA-2012-20240 File : nvt/gb_fedora_2012_20240_kernel_fc16.nasl |
2012-11-29 | Name : Fedora Update for kernel FEDORA-2012-18691 File : nvt/gb_fedora_2012_18691_kernel_fc16.nasl |
2012-11-06 | Name : Fedora Update for kernel FEDORA-2012-17479 File : nvt/gb_fedora_2012_17479_kernel_fc16.nasl |
2012-09-04 | Name : Fedora Update for kernel FEDORA-2012-12684 File : nvt/gb_fedora_2012_12684_kernel_fc16.nasl |
2012-08-06 | Name : Fedora Update for kernel FEDORA-2012-11348 File : nvt/gb_fedora_2012_11348_kernel_fc16.nasl |
2012-07-30 | Name : CentOS Update for kernel CESA-2012:0107 centos5 File : nvt/gb_CESA-2012_0107_kernel_centos5.nasl |
2012-07-30 | Name : CentOS Update for qemu-img CESA-2012:0050 centos6 File : nvt/gb_CESA-2012_0050_qemu-img_centos6.nasl |
2012-07-30 | Name : CentOS Update for kernel CESA-2011:1849 centos6 File : nvt/gb_CESA-2011_1849_kernel_centos6.nasl |
2012-07-30 | Name : CentOS Update for kernel CESA-2012:0052 centos6 File : nvt/gb_CESA-2012_0052_kernel_centos6.nasl |
2012-07-09 | Name : RedHat Update for kernel RHSA-2011:1849-01 File : nvt/gb_RHSA-2011_1849-01_kernel.nasl |
2012-07-09 | Name : RedHat Update for qemu-kvm RHSA-2012:0050-01 File : nvt/gb_RHSA-2012_0050-01_qemu-kvm.nasl |
2012-07-09 | Name : RedHat Update for kernel RHSA-2012:0052-01 File : nvt/gb_RHSA-2012_0052-01_kernel.nasl |
2012-06-25 | Name : Fedora Update for kernel FEDORA-2012-8931 File : nvt/gb_fedora_2012_8931_kernel_fc15.nasl |
2012-06-15 | Name : Fedora Update for kernel FEDORA-2012-8890 File : nvt/gb_fedora_2012_8890_kernel_fc16.nasl |
2012-05-17 | Name : Fedora Update for kernel FEDORA-2012-7594 File : nvt/gb_fedora_2012_7594_kernel_fc15.nasl |
2012-05-14 | Name : Fedora Update for kernel FEDORA-2012-7538 File : nvt/gb_fedora_2012_7538_kernel_fc16.nasl |
2012-04-26 | Name : Fedora Update for kernel FEDORA-2012-6406 File : nvt/gb_fedora_2012_6406_kernel_fc15.nasl |
2012-04-02 | Name : Fedora Update for kernel FEDORA-2012-0876 File : nvt/gb_fedora_2012_0876_kernel_fc16.nasl |
2012-04-02 | Name : Fedora Update for kernel FEDORA-2012-3030 File : nvt/gb_fedora_2012_3030_kernel_fc16.nasl |
2012-04-02 | Name : Fedora Update for kernel FEDORA-2012-3712 File : nvt/gb_fedora_2012_3712_kernel_fc16.nasl |
2012-03-29 | Name : Ubuntu Update for linux USN-1405-1 File : nvt/gb_ubuntu_USN_1405_1.nasl |
2012-03-29 | Name : Fedora Update for kernel FEDORA-2012-3715 File : nvt/gb_fedora_2012_3715_kernel_fc15.nasl |
2012-03-22 | Name : Fedora Update for kernel FEDORA-2012-4410 File : nvt/gb_fedora_2012_4410_kernel_fc16.nasl |
2012-03-19 | Name : Fedora Update for kernel FEDORA-2012-1497 File : nvt/gb_fedora_2012_1497_kernel_fc16.nasl |
2012-03-19 | Name : Fedora Update for libguestfs FEDORA-2011-17372 File : nvt/gb_fedora_2011_17372_libguestfs_fc16.nasl |
2012-03-19 | Name : Fedora Update for kernel FEDORA-2012-3350 File : nvt/gb_fedora_2012_3350_kernel_fc16.nasl |
2012-03-16 | Name : Fedora Update for kernel FEDORA-2012-3356 File : nvt/gb_fedora_2012_3356_kernel_fc15.nasl |
2012-03-07 | Name : Fedora Update for kernel FEDORA-2012-2753 File : nvt/gb_fedora_2012_2753_kernel_fc15.nasl |
2012-03-07 | Name : Ubuntu Update for linux-lts-backport-oneiric USN-1384-1 File : nvt/gb_ubuntu_USN_1384_1.nasl |
2012-03-07 | Name : Ubuntu Update for linux-ec2 USN-1388-1 File : nvt/gb_ubuntu_USN_1388_1.nasl |
2012-03-07 | Name : Ubuntu Update for linux USN-1389-1 File : nvt/gb_ubuntu_USN_1389_1.nasl |
2012-02-13 | Name : Fedora Update for kernel FEDORA-2012-1503 File : nvt/gb_fedora_2012_1503_kernel_fc15.nasl |
2012-02-13 | Name : RedHat Update for kernel RHSA-2012:0107-01 File : nvt/gb_RHSA-2012_0107-01_kernel.nasl |
2012-01-25 | Name : Fedora Update for kernel FEDORA-2012-0861 File : nvt/gb_fedora_2012_0861_kernel_fc15.nasl |
2012-01-09 | Name : Fedora Update for libguestfs FEDORA-2011-17388 File : nvt/gb_fedora_2011_17388_libguestfs_fc15.nasl |
Open Source Vulnerability Database (OSVDB)
Id | Description |
---|---|
78014 | Linux Kernel SG_IO SCSI IOCTL Command Parsing Local Privilege Escalation |
Nessus® Vulnerability Scanner
Date | Description |
---|---|
2015-05-20 | Name : The remote SUSE host is missing one or more security updates. File : suse_SU-2015-0812-1.nasl - Type : ACT_GATHER_INFO |
2014-11-26 | Name : The remote OracleVM host is missing one or more security updates. File : oraclevm_OVMSA-2012-0042.nasl - Type : ACT_GATHER_INFO |
2014-11-26 | Name : The remote OracleVM host is missing one or more security updates. File : oraclevm_OVMSA-2013-0039.nasl - Type : ACT_GATHER_INFO |
2014-11-17 | Name : The remote Red Hat host is missing one or more security updates. File : redhat-RHSA-2011-1850.nasl - Type : ACT_GATHER_INFO |
2014-11-17 | Name : The remote Red Hat host is missing one or more security updates. File : redhat-RHSA-2012-0168.nasl - Type : ACT_GATHER_INFO |
2014-07-22 | Name : The remote Red Hat host is missing one or more security updates. File : redhat-RHSA-2012-0333.nasl - Type : ACT_GATHER_INFO |
2013-09-04 | Name : The remote Amazon Linux AMI host is missing a security update. File : ala_ALAS-2012-34.nasl - Type : ACT_GATHER_INFO |
2013-07-12 | Name : The remote Oracle Linux host is missing one or more security updates. File : oraclelinux_ELSA-2011-1849.nasl - Type : ACT_GATHER_INFO |
2013-07-12 | Name : The remote Oracle Linux host is missing one or more security updates. File : oraclelinux_ELSA-2011-2038.nasl - Type : ACT_GATHER_INFO |
2013-07-12 | Name : The remote Oracle Linux host is missing one or more security updates. File : oraclelinux_ELSA-2012-0050.nasl - Type : ACT_GATHER_INFO |
2013-07-12 | Name : The remote Oracle Linux host is missing one or more security updates. File : oraclelinux_ELSA-2012-0052.nasl - Type : ACT_GATHER_INFO |
2013-07-12 | Name : The remote Oracle Linux host is missing one or more security updates. File : oraclelinux_ELSA-2012-0107.nasl - Type : ACT_GATHER_INFO |
2013-07-12 | Name : The remote Oracle Linux host is missing one or more security updates. File : oraclelinux_ELSA-2012-2022.nasl - Type : ACT_GATHER_INFO |
2013-01-24 | Name : The remote Red Hat host is missing one or more security updates. File : redhat-RHSA-2012-0050.nasl - Type : ACT_GATHER_INFO |
2013-01-24 | Name : The remote Red Hat host is missing one or more security updates. File : redhat-RHSA-2012-0358.nasl - Type : ACT_GATHER_INFO |
2012-08-01 | Name : The remote Scientific Linux host is missing one or more security updates. File : sl_20120209_kernel_on_SL5_x.nasl - Type : ACT_GATHER_INFO |
2012-08-01 | Name : The remote Scientific Linux host is missing one or more security updates. File : sl_20111222_kernel_on_SL6_x.nasl - Type : ACT_GATHER_INFO |
2012-04-24 | Name : The remote SuSE 11 host is missing one or more security updates. File : suse_11_kernel-120418.nasl - Type : ACT_GATHER_INFO |
2012-03-27 | Name : The remote Ubuntu host is missing one or more security-related patches. File : ubuntu_USN-1405-1.nasl - Type : ACT_GATHER_INFO |
2012-03-07 | Name : The remote Ubuntu host is missing a security-related patch. File : ubuntu_USN-1388-1.nasl - Type : ACT_GATHER_INFO |
2012-03-07 | Name : The remote Ubuntu host is missing one or more security-related patches. File : ubuntu_USN-1384-1.nasl - Type : ACT_GATHER_INFO |
2012-03-07 | Name : The remote Ubuntu host is missing one or more security-related patches. File : ubuntu_USN-1389-1.nasl - Type : ACT_GATHER_INFO |
2012-02-14 | Name : The remote CentOS host is missing one or more security updates. File : centos_RHSA-2012-0107.nasl - Type : ACT_GATHER_INFO |
2012-02-10 | Name : The remote Red Hat host is missing one or more security updates. File : redhat-RHSA-2012-0107.nasl - Type : ACT_GATHER_INFO |
2012-02-07 | Name : The remote SuSE 11 host is missing one or more security updates. File : suse_11_kernel-120129.nasl - Type : ACT_GATHER_INFO |
2012-02-07 | Name : The remote SuSE 11 host is missing one or more security updates. File : suse_11_kernel-120130.nasl - Type : ACT_GATHER_INFO |
2012-01-25 | Name : The remote CentOS host is missing one or more security updates. File : centos_RHSA-2012-0052.nasl - Type : ACT_GATHER_INFO |
2012-01-25 | Name : The remote CentOS host is missing one or more security updates. File : centos_RHSA-2012-0050.nasl - Type : ACT_GATHER_INFO |
2012-01-25 | Name : The remote Fedora host is missing a security update. File : fedora_2012-0876.nasl - Type : ACT_GATHER_INFO |
2012-01-25 | Name : The remote Fedora host is missing a security update. File : fedora_2012-0861.nasl - Type : ACT_GATHER_INFO |
2012-01-24 | Name : The remote Red Hat host is missing one or more security updates. File : redhat-RHSA-2012-0052.nasl - Type : ACT_GATHER_INFO |
2012-01-18 | Name : The remote Debian host is missing a security-related update. File : debian_DSA-2389.nasl - Type : ACT_GATHER_INFO |
2012-01-06 | Name : The remote Fedora host is missing a security update. File : fedora_2011-17388.nasl - Type : ACT_GATHER_INFO |
2012-01-06 | Name : The remote Fedora host is missing a security update. File : fedora_2011-17372.nasl - Type : ACT_GATHER_INFO |
2011-12-28 | Name : The remote CentOS host is missing one or more security updates. File : centos_RHSA-2011-1849.nasl - Type : ACT_GATHER_INFO |
2011-12-23 | Name : The remote Red Hat host is missing one or more security updates. File : redhat-RHSA-2011-1849.nasl - Type : ACT_GATHER_INFO |
Alert History
Date | Informations |
---|---|
2014-10-12 13:27:31 |
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2014-02-17 11:55:27 |
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