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centosCentOS ProjectCESA-2010:0398
HistoryMay 28, 2010 - 10:47 a.m.

kernel security update

2010-05-2810:47:05
CentOS Project
lists.centos.org
73

CVSS2

7.8

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

AV:N/AC:L/Au:N/C:N/I:N/A:C

EPSS

0.012

Percentile

85.5%

CentOS Errata and Security Advisory CESA-2010:0398

The kernel packages contain the Linux kernel, the core of any Linux
operating system.

This update fixes the following security issues:

  • a flaw was found in the Unidirectional Lightweight Encapsulation (ULE)
    implementation. A remote attacker could send a specially-crafted ISO
    MPEG-2 Transport Stream (TS) frame to a target system, resulting in an
    infinite loop (denial of service). (CVE-2010-1086, Important)

  • on AMD64 systems, it was discovered that the kernel did not ensure the
    ELF interpreter was available before making a call to the SET_PERSONALITY
    macro. A local attacker could use this flaw to cause a denial of service by
    running a 32-bit application that attempts to execute a 64-bit application.
    (CVE-2010-0307, Moderate)

  • a flaw was found in the kernel connector implementation. A local,
    unprivileged user could trigger this flaw by sending an arbitrary number
    of notification requests using specially-crafted netlink messages,
    resulting in a denial of service. (CVE-2010-0410, Moderate)

  • a flaw was found in the Memory-mapped I/O (MMIO) instruction decoder in
    the Xen hypervisor implementation. An unprivileged guest user could use
    this flaw to trick the hypervisor into emulating a certain instruction,
    which could crash the guest (denial of service). (CVE-2010-0730, Moderate)

  • a divide-by-zero flaw was found in the azx_position_ok() function in the
    driver for Intel High Definition Audio, snd-hda-intel. A local,
    unprivileged user could trigger this flaw to cause a kernel crash (denial
    of service). (CVE-2010-1085, Moderate)

This update also fixes the following bugs:

  • in some cases, booting a system with the “iommu=on” kernel parameter
    resulted in a Xen hypervisor panic. (BZ#580199)

  • the fnic driver flushed the Rx queue instead of the Tx queue after
    fabric login. This caused crashes in some cases. (BZ#580829)

  • “kernel unaligned access” warnings were logged to the dmesg log on some
    systems. (BZ#580832)

  • the “Northbridge Error, node 1, core: -1 K8 ECC error” error occurred on
    some systems using the amd64_edac driver. (BZ#580836)

  • in rare circumstances, when using kdump and booting a kernel with
    “crashkernel=128M@16M”, the kdump kernel did not boot after a crash.
    (BZ#580838)

  • TLB page table entry flushing was done incorrectly on IBM System z,
    possibly causing crashes, subtle data inconsistency, or other issues.
    (BZ#580839)

  • iSCSI failover times were slower than in Red Hat Enterprise Linux 5.3.
    (BZ#580840)

  • fixed floating point state corruption after signal. (BZ#580841)

  • in certain circumstances, under heavy load, certain network interface
    cards using the bnx2 driver and configured to use MSI-X, could stop
    processing interrupts and then network connectivity would cease.
    (BZ#587799)

  • cnic parts resets could cause a deadlock when the bnx2 device was
    enslaved in a bonding device and that device had an associated VLAN.
    (BZ#581148)

  • some BIOS implementations initialized interrupt remapping hardware in a
    way the Xen hypervisor implementation did not expect. This could have
    caused a system hang during boot. (BZ#581150)

  • AMD Magny-Cours systems panicked when booting a 32-bit kernel.
    (BZ#580846)

Users should upgrade to these updated packages, which contain backported
patches to correct these issues. The system must be rebooted for this
update to take effect.

Merged security bulletin from advisories:
https://lists.centos.org/pipermail/centos-announce/2010-May/078845.html
https://lists.centos.org/pipermail/centos-announce/2010-May/078846.html

Affected packages:
kernel
kernel-PAE
kernel-PAE-devel
kernel-debug
kernel-debug-devel
kernel-devel
kernel-doc
kernel-headers
kernel-xen
kernel-xen-devel

Upstream details at:
https://access.redhat.com/errata/RHSA-2010:0398

CVSS2

7.8

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

AV:N/AC:L/Au:N/C:N/I:N/A:C

EPSS

0.012

Percentile

85.5%