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Overview

Id RHSA-2012:1540-01
Name Red Hat 2012:1540-01 RHSA Important: kernel security, bug fix, and enhancement update for RHEL 5 x86
Vendor Name red_hat
Product None
Content Type Critical Critical
Language(s)
Operating System(s) Linux 
Released On 04 Dec 2012 12:00:00

RHSA-2012:1540-01

Red Hat 2012:1540-01 RHSA Important: kernel security, bug fix, and enhancement update for RHEL 5 x86

Vendor Name

red_hat

Product

None

Released On

04 Dec 2012 12:00:00

Url

https://rhn.redhat.com/errata/RHSA-2012-1540.html

Description

LSAC(v2)
These packages contain the Linux kernel. Security fixes: * A race condition in the way asynchronous I/O and fallocate() interacted when using ext4 could allow a local, unprivileged user to obtain random data from a deleted file. (CVE-2012-4508, Important) * A flaw in the way the Xen hypervisor implementation range checked guest provided addresses in the XENMEM_exchange hypercall could allow a malicious, para-virtualized guest administrator to crash the hypervisor or, potentially, escalate their privileges, allowing them to execute arbitrary code at the hypervisor level. (CVE-2012-5513, Important) * A flaw in the Reliable Datagram Sockets (RDS) protocol implementation could allow a local, unprivileged user to cause a denial of service. (CVE-2012-2372, Moderate) * A race condition in the way access to inet->opt ip_options was synchronized in the Linux kernel's TCP/IP protocol suite implementation. Depending on the network facing applications running on the system, a remote attacker could possibly trigger this flaw to cause a denial of service. A local, unprivileged user could use this flaw to cause a denial of service regardless of the applications the system runs. (CVE-2012-3552, Moderate) * The Xen hypervisor implementation did not properly restrict the period values used to initialize per VCPU periodic timers. A privileged guest user could cause an infinite loop on the physical CPU. If the watchdog were enabled, it would detect said loop and panic the host system. (CVE-2012-4535, Moderate) * A flaw in the way the Xen hypervisor implementation handled set_p2m_entry() error conditions could allow a privileged, fully-virtualized guest user to crash the hypervisor. (CVE-2012-4537, Moderate) Red Hat would like to thank Theodore Ts'o for reporting CVE-2012-4508; the Xen project for reporting CVE-2012-5513, CVE-2012-4535, and CVE-2012-4537; and Hafid Lin for reporting CVE-2012-3552. Upstream acknowledges Dmitry Monakhov as the original reporter of CVE-2012-4508. CVE-2012-2372 was discovered by Li Honggang of Red Hat. Bug fixes: * Previously, the interrupt handlers of the qla2xxx driver could clear pending interrupts right after the IRQ lines were attached during system start-up. Consequently, the kernel could miss the interrupt that reported completion of the link initialization, and the qla2xxx driver then failed to detect all attached LUNs. With this update, the qla2xxx driver has been modified to no longer clear interrupt bits after attaching the IRQ lines. The driver now correctly detects all attached LUNs as expected. (BZ#870118) * The Ethernet channel bonding driver reported the MII (Media Independent Interface) status of the bond interface in 802.3ad mode as being up even though the MII status of all of the slave devices was down. This could pose a problem if the MII status of the bond interface was used to determine if failover should occur. With this update, the agg_device_up() function has been added to the bonding driver, which allows the driver to report the link status of the bond interface correctly, that is, down when all of its slaves are down, in the 802.3ad mode. (BZ#877943) Enhancements: * This update backports several changes from the latest upstream version of the bnx2x driver. The most important change, the remote-fault link detection feature, allows the driver to periodically scan the physical link layer for remote faults. If t

Related Resources

Related Vulnerabilities

CVE-2012-2372   CVE-2012-3552   CVE-2012-4508   CVE-2012-4535   CVE-2012-4537   CVE-2012-5513  

Related Patches

None

Superseded Patches


Last Updated: 27 May 2016 11:15:56