Test ID:	1.3.6.1.4.1.25623.1.0.871365
Category:	Red Hat Local Security Checks
Title:	RedHat Update for kernel RHSA-2015:1042-01
Summary:	The remote host is missing an update for the 'kernel'; package(s) announced via the referenced advisory.
Description:	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. * It was found that the Linux kernel's implementation of vectored pipe read and write functionality did not take into account the I/O vectors that were already processed when retrying after a failed atomic access operation, potentially resulting in memory corruption due to an I/O vector array overrun. A local, unprivileged user could use this flaw to crash the system or, potentially, escalate their privileges on the system. (CVE-2015-1805, Important) The security impact of this issue was discovered by Red Hat. This update fixes the following bugs: * Due to a bug in the lpfc_device_reset_handler() function, a scsi command timeout could lead to a system crash. With this update, lpfc_device_reset_handler recovers storage without crashing. (BZ#1070964) * Due to the code decrementing the reclaim_in_progress counter without having incremented it first, severe spinlock contention occurred in the shrink_zone() function even though the vm.max_reclaims_in_progress feature was set to 1. This update provides a patch fixing the underlying source code, and spinlock contention no longer occurs in this scenario. (BZ#1164105) * A TCP socket using SACK that had a retransmission but recovered from it, failed to reset the retransmission timestamp. As a consequence, on certain connections, if a packet had to be re-transmitted, the retrans_stamp variable was only cleared when the next acked packet was received. This could lead to an early abortion of the TCP connection if this next packet also got lost. With this update, the socket clears retrans_stamp when the recovery is completed, thus fixing the bug. (BZ#1205521) * Previously, the signal delivery paths did not clear the TS_USEDFPU flag, which could cause problems in the switch_to() function and lead to floating-point unit (FPU) corruption. With this update, TS_USEDFPU is cleared as expected, and FPU is no longer under threat of corruption. (BZ#1193505) * A race condition in the exit_sem() function previously caused the semaphore undo list corruption. As a consequence, a kernel crash could occur. The corruption in the semaphore undo list has been fixed, and the kernel no longer crashes in this situation. (BZ#1124574) * Previously, when running the 'virsh blockresize [Device] [Newsize]' command to resize the disk, the new size was not reflected in a Red Hat Enterprise Linux 5 Virtual Machine (VM). With this update, the new size is now reflected online immediately in a Red Hat Enterprise Linux 5 VM so it is no longer necessary to reboot the VM t ... 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: 7.2 CVSS Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C
Cross-Ref:	Common Vulnerability Exposure (CVE) ID: CVE-2015-1805 BugTraq ID: 74951 http://www.securityfocus.com/bid/74951 Debian Security Information: DSA-3290 (Google Search) http://www.debian.org/security/2015/dsa-3290 http://www.openwall.com/lists/oss-security/2015/06/06/2 RedHat Security Advisories: RHSA-2015:1042 http://rhn.redhat.com/errata/RHSA-2015-1042.html RedHat Security Advisories: RHSA-2015:1081 http://rhn.redhat.com/errata/RHSA-2015-1081.html RedHat Security Advisories: RHSA-2015:1082 http://rhn.redhat.com/errata/RHSA-2015-1082.html RedHat Security Advisories: RHSA-2015:1120 http://rhn.redhat.com/errata/RHSA-2015-1120.html RedHat Security Advisories: RHSA-2015:1137 http://rhn.redhat.com/errata/RHSA-2015-1137.html RedHat Security Advisories: RHSA-2015:1138 http://rhn.redhat.com/errata/RHSA-2015-1138.html RedHat Security Advisories: RHSA-2015:1190 http://rhn.redhat.com/errata/RHSA-2015-1190.html RedHat Security Advisories: RHSA-2015:1199 http://rhn.redhat.com/errata/RHSA-2015-1199.html RedHat Security Advisories: RHSA-2015:1211 http://rhn.redhat.com/errata/RHSA-2015-1211.html http://www.securitytracker.com/id/1032454 SuSE Security Announcement: SUSE-SU-2015:1224 (Google Search) http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00023.html SuSE Security Announcement: SUSE-SU-2015:1324 (Google Search) http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00049.html SuSE Security Announcement: SUSE-SU-2015:1478 (Google Search) http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00004.html SuSE Security Announcement: SUSE-SU-2015:1487 (Google Search) http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00007.html SuSE Security Announcement: SUSE-SU-2015:1488 (Google Search) http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00008.html SuSE Security Announcement: SUSE-SU-2015:1489 (Google Search) http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00009.html SuSE Security Announcement: SUSE-SU-2015:1490 (Google Search) http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00010.html SuSE Security Announcement: SUSE-SU-2015:1491 (Google Search) http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00011.html SuSE Security Announcement: SUSE-SU-2015:1592 (Google Search) http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00018.html SuSE Security Announcement: SUSE-SU-2015:1611 (Google Search) http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00021.html http://www.ubuntu.com/usn/USN-2679-1 http://www.ubuntu.com/usn/USN-2680-1 http://www.ubuntu.com/usn/USN-2681-1 http://www.ubuntu.com/usn/USN-2967-1 http://www.ubuntu.com/usn/USN-2967-2
Copyright	Copyright (C) 2015 Greenbone Networks GmbH

This is only one of 99761 vulnerability tests in our test suite. Find out more about running a complete security audit. To run a free test of this vulnerability against your system, register below.