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centosCentOS ProjectCESA-2009:0459
HistoryMay 01, 2009 - 10:39 a.m.

kernel security update

2009-05-0110:39:17
CentOS Project
lists.centos.org
73

4 Medium

CVSS2

Access Vector

LOCAL

Access Complexity

HIGH

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

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

0.0005 Low

EPSS

Percentile

16.6%

CentOS Errata and Security Advisory CESA-2009:0459

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

Security fixes:

  • a logic error was found in the do_setlk() function of the Linux kernel
    Network File System (NFS) implementation. If a signal interrupted a lock
    request, the local POSIX lock was incorrectly created. This could cause a
    denial of service on the NFS server if a file descriptor was closed before
    its corresponding lock request returned. (CVE-2008-4307, Important)

  • a deficiency was found in the Linux kernel system call auditing
    implementation on 64-bit systems. This could allow a local, unprivileged
    user to circumvent a system call audit configuration, if that configuration
    filtered based on the “syscall” number or arguments.
    (CVE-2009-0834, Important)

  • Chris Evans reported a deficiency in the Linux kernel signals
    implementation. The clone() system call permits the caller to indicate the
    signal it wants to receive when its child exits. When clone() is called
    with the CLONE_PARENT flag, it permits the caller to clone a new child that
    shares the same parent as itself, enabling the indicated signal to be sent
    to the caller’s parent (instead of the caller), even if the caller’s parent
    has different real and effective user IDs. This could lead to a denial of
    service of the parent. (CVE-2009-0028, Moderate)

  • the sock_getsockopt() function in the Linux kernel did not properly
    initialize a data structure that can be directly returned to user-space
    when the getsockopt() function is called with SO_BSDCOMPAT optname set.
    This flaw could possibly lead to memory disclosure.
    (CVE-2009-0676, Moderate)

Bug fixes:

  • a kernel crash may have occurred for Red Hat Enterprise Linux 4.7 guests
    if their guest configuration file specified “vif = [ “type=ioemu” ]”. This
    crash only occurred when starting guests via the “xm create” command.
    (BZ#477146)

  • a bug in IO-APIC NMI watchdog may have prevented Red Hat Enterprise Linux
    4.7 from being installed on HP ProLiant DL580 G5 systems. Hangs during
    installation and “NMI received for unknown reason [xx]” errors may have
    occurred. (BZ#479184)

  • a kernel deadlock on some systems when using netdump through a network
    interface that uses the igb driver. (BZ#480579)

  • a possible kernel hang in sys_ptrace() on the Itanium® architecture,
    possibly triggered by tracing a threaded process with strace. (BZ#484904)

  • the RHSA-2008:0665 errata only fixed the known problem with the LSI Logic
    LSI53C1030 Ultra320 SCSI controller, for tape devices. Read commands sent
    to tape devices may have received incorrect data. This issue may have led
    to data corruption. This update includes a fix for all types of devices.
    (BZ#487399)

  • a missing memory barrier caused a race condition in the AIO subsystem
    between the read_events() and aio_complete() functions. This may have
    caused a thread in read_events() to sleep indefinitely, possibly causing an
    application hang. (BZ#489935)

  • due to a lack of synchronization in the NFS client code, modifications
    to some pages (for files on an NFS mounted file system) made through a
    region of memory mapped by mmap() may be lost if the NFS client invalidates
    its page cache for particular files. (BZ#490119)

  • a NULL pointer dereference in the megaraid_mbox driver caused a system
    crash on some systems. (BZ#493420)

  • the ext3_symlink() function in the ext3 file system code used an
    illegal __GFP_FS allocation inside some transactions. This may have
    resulted in a kernel panic and “Assertion failure” errors. (BZ#493422)

  • do_machine_check() cleared all Machine Check Exception (MCE) status
    registers, preventing the BIOS from using them to determine the cause of
    certain panics and errors. (BZ#494915)

  • a bug prevented NMI watchdog from initializing on HP ProLiant DL580 G5
    systems. (BZ#497330)

This update contains backported patches to fix 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/2009-May/078000.html
https://lists.centos.org/pipermail/centos-announce/2009-May/078001.html

Affected packages:
kernel
kernel-devel
kernel-doc
kernel-hugemem
kernel-hugemem-devel
kernel-largesmp
kernel-largesmp-devel
kernel-smp
kernel-smp-devel
kernel-xenU
kernel-xenU-devel

Upstream details at:
https://access.redhat.com/errata/RHSA-2009:0459

4 Medium

CVSS2

Access Vector

LOCAL

Access Complexity

HIGH

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

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

0.0005 Low

EPSS

Percentile

16.6%