ID de Prueba:	1.3.6.1.4.1.25623.1.0.870544
Categoría:	Red Hat Local Security Checks
Título:	RedHat Update for kernel RHSA-2012:0107-01
Resumen:	The remote host is missing an update for the 'kernel'; package(s) announced via the referenced advisory.
Descripción:	Summary: The remote host is missing an update for the 'kernel' package(s) announced via the referenced advisory. Vulnerability Insight: The kernel packages contain the Linux kernel, the core of any Linux operating system. This update fixes the following security issues: * 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. Refer to Red Hat Knowledgebase article DOC-67874, linked to in the References, for further details about this issue. (CVE-2011-4127, Important) * A flaw was found in the way the Linux kernel handled robust list pointers of user-space held futexes across exec() calls. A local, unprivileged user could use this flaw to cause a denial of service or, eventually, escalate their privileges. (CVE-2012-0028, Important) * A flaw was found in the Linux kernel in the way splitting two extents in ext4_ext_convert_to_initialized() worked. A local, unprivileged user with the ability to mount and unmount ext4 file systems could use this flaw to cause a denial of service. (CVE-2011-3638, Moderate) * A flaw was found in the way the Linux kernel's journal_unmap_buffer() function handled buffer head states. On systems that have an ext4 file system with a journal mounted, a local, unprivileged user could use this flaw to cause a denial of service. (CVE-2011-4086, Moderate) * A divide-by-zero flaw was found in the Linux kernel's igmp_heard_query() function. An attacker able to send certain IGMP (Internet Group Management Protocol) packets to a target system could use this flaw to cause a denial of service. (CVE-2012-0207, Moderate) Red Hat would like to thank Zheng Liu for reporting CVE-2011-3638, and Simon McVittie for reporting CVE-2012-0207. This update also fixes the following bugs: * When a host was in recovery mode and a SCSI scan operation was initiated, the scan operation failed and provided no error output. This bug has been fixed and the SCSI layer now waits for recovery of the host to complete scan operations for devices. (BZ#772162) * SG_IO ioctls were not implemented correctly in the Red Hat Enterprise Linux 5 virtio-blk driver. Sending an SG_IO ioctl request to a virtio-blk disk caused the sending thread to enter an uninterruptible sleep state ('D' state). With this update, SG_IO ioctls are rejected by the virtio-blk driver: the ioctl system call will simply ... Description truncated, please see the referenced URL(s) for more information. Affected Software/OS: kernel on Red Hat Enterprise Linux (v. 5 server) Solution: Please Install the Updated Packages. CVSS Score: 7.8 CVSS Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C
Referencia Cruzada:	Common Vulnerability Exposure (CVE) ID: CVE-2011-3638 [oss-security] 20111024 Re: CVE Request -- kernel: ext4: ext4_ext_insert_extent() kernel oops http://www.openwall.com/lists/oss-security/2011/10/24/2 http://ftp.osuosl.org/pub/linux/kernel/v3.0/ChangeLog-3.0 http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=667eff35a1f56fa74ce98a0c7c29a40adc1ba4e3 https://bugzilla.redhat.com/show_bug.cgi?id=747942 https://github.com/torvalds/linux/commit/667eff35a1f56fa74ce98a0c7c29a40adc1ba4e3 Common Vulnerability Exposure (CVE) ID: CVE-2011-4086 48898 http://secunia.com/advisories/48898 48964 http://secunia.com/advisories/48964 DSA-2469 http://www.debian.org/security/2012/dsa-2469 RHSA-2012:0571 http://rhn.redhat.com/errata/RHSA-2012-0571.html RHSA-2012:0670 http://rhn.redhat.com/errata/RHSA-2012-0670.html SUSE-SU-2012:0554 http://lists.opensuse.org/opensuse-security-announce/2012-04/msg00021.html SUSE-SU-2012:0616 http://lists.opensuse.org/opensuse-security-announce/2012-05/msg00013.html http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=15291164b22a357cb211b618adfef4fa82fc0de3 http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.3.1 https://bugzilla.redhat.com/show_bug.cgi?id=749143 https://github.com/torvalds/linux/commit/15291164b22a357cb211b618adfef4fa82fc0de3 Common Vulnerability Exposure (CVE) ID: CVE-2011-4127 SUSE-SU-2015:0812 http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00020.html [oss-security] 20111222 CVE-2011-4127 kernel: possible privilege escalation via SG_IO ioctl http://www.openwall.com/lists/oss-security/2011/12/22/5 http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=0bfc96cb77224736dfa35c3c555d37b3646ef35e http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=ec8013beddd717d1740cfefb1a9b900deef85462 http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.2.2 https://bugzilla.redhat.com/show_bug.cgi?id=752375 https://github.com/torvalds/linux/commit/0bfc96cb77224736dfa35c3c555d37b3646ef35e https://github.com/torvalds/linux/commit/ec8013beddd717d1740cfefb1a9b900deef85462 Common Vulnerability Exposure (CVE) ID: CVE-2012-0028 [oss-security] 20120508 Re: CVE Request -- kernel: futex: clear robust_list on execve http://www.openwall.com/lists/oss-security/2012/05/08/1 http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.28 http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=8141c7f3e7aee618312fa1c15109e1219de784a7 https://bugzilla.redhat.com/show_bug.cgi?id=771764 https://github.com/torvalds/linux/commit/8141c7f3e7aee618312fa1c15109e1219de784a7 Common Vulnerability Exposure (CVE) ID: CVE-2012-0207 http://www.openwall.com/lists/oss-security/2012/01/10/5
Copyright	Copyright (C) 2012 Greenbone AG

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