U radu jezgre operacijskog sustava Red Hat Enterprise Linux 6 uočena su tri nova sigurnosna nedostatka. Lokalni napadač navedene nedostatke može iskoristiti za napad uskraćivanja usluga (DoS).
| Paket: | Linux kernel 3.x |
| Operacijski sustavi: | Red Hat Enterprise Linux 6 |
| Kritičnost: | 4.3 |
| Problem: | neodgovarajuće rukovanje memorijom, pogreška u programskoj funkciji, pogreška u programskoj komponenti |
| Iskorištavanje: | lokalno |
| Posljedica: | uskraćivanje usluga (DoS) |
| Rješenje: | programska zakrpa proizvođača |
| CVE: | CVE-2012-0879, CVE-2012-1090, CVE-2012-1097 |
| Izvorni ID preporuke: | RHSA-2012:0481-01 |
| Izvor: | Red Hat |
| Problem: | |
| Problemi sigurnosti se javljaju zbog pogrešnog rukovanja memorijom u komponenti "I/O context handling", pogrešaka u funkciji "cifs_lookup()" te neodgovarajuće implementacije "regset" infrastrukture. |
|
| Posljedica: | |
| Lokalni zloćudni korisnik spomenute nedostatke može iskoristiti za DoS (eng. Denial of Service) napad. |
|
| Rješenje: | |
| Rješenje problema sigurnosti je korištenje dostupnih programskih nadogradnji. |
|
Izvorni tekst preporuke
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=====================================================================
Red Hat Security Advisory
Synopsis: Moderate: kernel security, bug fix, and enhancement update
Advisory ID: RHSA-2012:0481-01
Product: Red Hat Enterprise Linux
Advisory URL: https://rhn.redhat.com/errata/RHSA-2012-0481.html
Issue date: 2012-04-17
CVE Names: CVE-2012-0879 CVE-2012-1090 CVE-2012-1097
=====================================================================
1. Summary:
Updated kernel packages that fix multiple security issues, several bugs,
and add various enhancements are now available for Red Hat
Enterprise Linux 6.
The Red Hat Security Response Team has rated this update as having moderate
security impact. Common Vulnerability Scoring System (CVSS) base scores,
which give detailed severity ratings, are available for each vulnerability
from the CVE links in the References section.
2. Relevant releases/architectures:
Red Hat Enterprise Linux Desktop (v. 6) - i386, noarch, x86_64
Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, x86_64
Red Hat Enterprise Linux HPC Node (v. 6) - noarch, x86_64
Red Hat Enterprise Linux HPC Node Optional (v. 6) - x86_64
Red Hat Enterprise Linux Server (v. 6) - i386, noarch, ppc64, s390x, x86_64
Red Hat Enterprise Linux Server Optional (v. 6) - i386, ppc64, s390x, x86_64
Red Hat Enterprise Linux Workstation (v. 6) - i386, noarch, x86_64
Red Hat Enterprise Linux Workstation Optional (v. 6) - i386, x86_64
3. Description:
The kernel packages contain the Linux kernel, the core of any Linux
operating system.
This update fixes the following security issues:
* Numerous reference count leaks were found in the Linux kernel's block
layer I/O context handling implementation. This could allow a local,
unprivileged user to cause a denial of service. (CVE-2012-0879,
Moderate)
* A flaw was found in the Linux kernel's cifs_lookup() implementation.
POSIX open during lookup should only be supported for regular files. When
non-regular files (for example, a named (FIFO) pipe or other special files)
are opened on lookup, it could cause a denial of service. (CVE-2012-1090,
Moderate)
* It was found that the Linux kernel's register set (regset) common
infrastructure implementation did not check if the required get and set
handlers were initialized. A local, unprivileged user could use this flaw
to cause a denial of service by performing a register set operation with a
ptrace() PTRACE_SETREGSET or PTRACE_GETREGSET request. (CVE-2012-1097,
Moderate)
Red Hat would like to thank H. Peter Anvin for reporting CVE-2012-1097.
This update also fixes several bugs and adds various enhancements.
Documentation for these changes will be available shortly from the
Technical Notes document linked to in the References section.
Users should upgrade to these updated packages, which contain backported
patches to correct these issues, and fix the bugs and add the enhancements
noted in the Technical Notes. The system must be rebooted for this update
to take effect.
4. Solution:
Before applying this update, make sure all previously-released errata
relevant to your system have been applied.
This update is available via the Red Hat Network. Details on how to
use the Red Hat Network to apply this update are available at
https://access.redhat.com/knowledge/articles/11258
To install kernel packages manually, use "rpm -ivh [package]". Do not
use "rpm -Uvh" as that will remove the running kernel binaries from
your system. You may use "rpm -e" to remove old kernels after
determining that the new kernel functions properly on your system.
5. Bugs fixed (http://bugzilla.redhat.com/):
789373 - cifs: multiple process stuck waiting for page lock [rhel-6.2.z]
796829 - CVE-2012-0879 kernel: block: CLONE_IO io_context refcounting issues
798293 - CVE-2012-1090 kernel: cifs: dentry refcount leak when opening a FIFO on
lookup leads to panic on unmount
799209 - CVE-2012-1097 kernel: regset: Prevent null pointer reference on
readonly regsets
802379 - Anomaly in mbind memory map causing Java Hotspot JVM Seg fault with
NUMA aware ParallelScavange GC [rhel-6.2.z]
6. Package List:
Red Hat Enterprise Linux Desktop (v. 6):
Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Client/en/os/SRPMS/kernel-2.6.32-220.13.1.el6.src.rpm
i386:
kernel-2.6.32-220.13.1.el6.i686.rpm
kernel-debug-2.6.32-220.13.1.el6.i686.rpm
kernel-debug-debuginfo-2.6.32-220.13.1.el6.i686.rpm
kernel-debug-devel-2.6.32-220.13.1.el6.i686.rpm
kernel-debuginfo-2.6.32-220.13.1.el6.i686.rpm
kernel-debuginfo-common-i686-2.6.32-220.13.1.el6.i686.rpm
kernel-devel-2.6.32-220.13.1.el6.i686.rpm
kernel-headers-2.6.32-220.13.1.el6.i686.rpm
perf-2.6.32-220.13.1.el6.i686.rpm
perf-debuginfo-2.6.32-220.13.1.el6.i686.rpm
noarch:
kernel-doc-2.6.32-220.13.1.el6.noarch.rpm
kernel-firmware-2.6.32-220.13.1.el6.noarch.rpm
x86_64:
kernel-2.6.32-220.13.1.el6.x86_64.rpm
kernel-debug-2.6.32-220.13.1.el6.x86_64.rpm
kernel-debug-debuginfo-2.6.32-220.13.1.el6.x86_64.rpm
kernel-debug-devel-2.6.32-220.13.1.el6.x86_64.rpm
kernel-debuginfo-2.6.32-220.13.1.el6.x86_64.rpm
kernel-debuginfo-common-x86_64-2.6.32-220.13.1.el6.x86_64.rpm
kernel-devel-2.6.32-220.13.1.el6.x86_64.rpm
kernel-headers-2.6.32-220.13.1.el6.x86_64.rpm
perf-2.6.32-220.13.1.el6.x86_64.rpm
perf-debuginfo-2.6.32-220.13.1.el6.x86_64.rpm
Red Hat Enterprise Linux Desktop Optional (v. 6):
Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Client/en/os/SRPMS/kernel-2.6.32-220.13.1.el6.src.rpm
i386:
kernel-debug-debuginfo-2.6.32-220.13.1.el6.i686.rpm
kernel-debuginfo-2.6.32-220.13.1.el6.i686.rpm
kernel-debuginfo-common-i686-2.6.32-220.13.1.el6.i686.rpm
perf-debuginfo-2.6.32-220.13.1.el6.i686.rpm
python-perf-2.6.32-220.13.1.el6.i686.rpm
x86_64:
kernel-debug-debuginfo-2.6.32-220.13.1.el6.x86_64.rpm
kernel-debuginfo-2.6.32-220.13.1.el6.x86_64.rpm
kernel-debuginfo-common-x86_64-2.6.32-220.13.1.el6.x86_64.rpm
perf-debuginfo-2.6.32-220.13.1.el6.x86_64.rpm
python-perf-2.6.32-220.13.1.el6.x86_64.rpm
Red Hat Enterprise Linux HPC Node (v. 6):
Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6ComputeNode/en/os/SRPMS/kernel-2.6.32-220.13.1.el6.src.rpm
noarch:
kernel-doc-2.6.32-220.13.1.el6.noarch.rpm
kernel-firmware-2.6.32-220.13.1.el6.noarch.rpm
x86_64:
kernel-2.6.32-220.13.1.el6.x86_64.rpm
kernel-debug-2.6.32-220.13.1.el6.x86_64.rpm
kernel-debug-debuginfo-2.6.32-220.13.1.el6.x86_64.rpm
kernel-debug-devel-2.6.32-220.13.1.el6.x86_64.rpm
kernel-debuginfo-2.6.32-220.13.1.el6.x86_64.rpm
kernel-debuginfo-common-x86_64-2.6.32-220.13.1.el6.x86_64.rpm
kernel-devel-2.6.32-220.13.1.el6.x86_64.rpm
kernel-headers-2.6.32-220.13.1.el6.x86_64.rpm
perf-2.6.32-220.13.1.el6.x86_64.rpm
perf-debuginfo-2.6.32-220.13.1.el6.x86_64.rpm
Red Hat Enterprise Linux HPC Node Optional (v. 6):
Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6ComputeNode/en/os/SRPMS/kernel-2.6.32-220.13.1.el6.src.rpm
x86_64:
kernel-debug-debuginfo-2.6.32-220.13.1.el6.x86_64.rpm
kernel-debuginfo-2.6.32-220.13.1.el6.x86_64.rpm
kernel-debuginfo-common-x86_64-2.6.32-220.13.1.el6.x86_64.rpm
perf-debuginfo-2.6.32-220.13.1.el6.x86_64.rpm
python-perf-2.6.32-220.13.1.el6.x86_64.rpm
Red Hat Enterprise Linux Server (v. 6):
Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/os/SRPMS/kernel-2.6.32-220.13.1.el6.src.rpm
i386:
kernel-2.6.32-220.13.1.el6.i686.rpm
kernel-debug-2.6.32-220.13.1.el6.i686.rpm
kernel-debug-debuginfo-2.6.32-220.13.1.el6.i686.rpm
kernel-debug-devel-2.6.32-220.13.1.el6.i686.rpm
kernel-debuginfo-2.6.32-220.13.1.el6.i686.rpm
kernel-debuginfo-common-i686-2.6.32-220.13.1.el6.i686.rpm
kernel-devel-2.6.32-220.13.1.el6.i686.rpm
kernel-headers-2.6.32-220.13.1.el6.i686.rpm
perf-2.6.32-220.13.1.el6.i686.rpm
perf-debuginfo-2.6.32-220.13.1.el6.i686.rpm
noarch:
kernel-doc-2.6.32-220.13.1.el6.noarch.rpm
kernel-firmware-2.6.32-220.13.1.el6.noarch.rpm
ppc64:
kernel-2.6.32-220.13.1.el6.ppc64.rpm
kernel-bootwrapper-2.6.32-220.13.1.el6.ppc64.rpm
kernel-debug-2.6.32-220.13.1.el6.ppc64.rpm
kernel-debug-debuginfo-2.6.32-220.13.1.el6.ppc64.rpm
kernel-debug-devel-2.6.32-220.13.1.el6.ppc64.rpm
kernel-debuginfo-2.6.32-220.13.1.el6.ppc64.rpm
kernel-debuginfo-common-ppc64-2.6.32-220.13.1.el6.ppc64.rpm
kernel-devel-2.6.32-220.13.1.el6.ppc64.rpm
kernel-headers-2.6.32-220.13.1.el6.ppc64.rpm
perf-2.6.32-220.13.1.el6.ppc64.rpm
perf-debuginfo-2.6.32-220.13.1.el6.ppc64.rpm
s390x:
kernel-2.6.32-220.13.1.el6.s390x.rpm
kernel-debug-2.6.32-220.13.1.el6.s390x.rpm
kernel-debug-debuginfo-2.6.32-220.13.1.el6.s390x.rpm
kernel-debug-devel-2.6.32-220.13.1.el6.s390x.rpm
kernel-debuginfo-2.6.32-220.13.1.el6.s390x.rpm
kernel-debuginfo-common-s390x-2.6.32-220.13.1.el6.s390x.rpm
kernel-devel-2.6.32-220.13.1.el6.s390x.rpm
kernel-headers-2.6.32-220.13.1.el6.s390x.rpm
kernel-kdump-2.6.32-220.13.1.el6.s390x.rpm
kernel-kdump-debuginfo-2.6.32-220.13.1.el6.s390x.rpm
kernel-kdump-devel-2.6.32-220.13.1.el6.s390x.rpm
perf-2.6.32-220.13.1.el6.s390x.rpm
perf-debuginfo-2.6.32-220.13.1.el6.s390x.rpm
x86_64:
kernel-2.6.32-220.13.1.el6.x86_64.rpm
kernel-debug-2.6.32-220.13.1.el6.x86_64.rpm
kernel-debug-debuginfo-2.6.32-220.13.1.el6.x86_64.rpm
kernel-debug-devel-2.6.32-220.13.1.el6.x86_64.rpm
kernel-debuginfo-2.6.32-220.13.1.el6.x86_64.rpm
kernel-debuginfo-common-x86_64-2.6.32-220.13.1.el6.x86_64.rpm
kernel-devel-2.6.32-220.13.1.el6.x86_64.rpm
kernel-headers-2.6.32-220.13.1.el6.x86_64.rpm
perf-2.6.32-220.13.1.el6.x86_64.rpm
perf-debuginfo-2.6.32-220.13.1.el6.x86_64.rpm
Red Hat Enterprise Linux Server Optional (v. 6):
Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/os/SRPMS/kernel-2.6.32-220.13.1.el6.src.rpm
i386:
kernel-debug-debuginfo-2.6.32-220.13.1.el6.i686.rpm
kernel-debuginfo-2.6.32-220.13.1.el6.i686.rpm
kernel-debuginfo-common-i686-2.6.32-220.13.1.el6.i686.rpm
perf-debuginfo-2.6.32-220.13.1.el6.i686.rpm
python-perf-2.6.32-220.13.1.el6.i686.rpm
ppc64:
kernel-debug-debuginfo-2.6.32-220.13.1.el6.ppc64.rpm
kernel-debuginfo-2.6.32-220.13.1.el6.ppc64.rpm
kernel-debuginfo-common-ppc64-2.6.32-220.13.1.el6.ppc64.rpm
perf-debuginfo-2.6.32-220.13.1.el6.ppc64.rpm
python-perf-2.6.32-220.13.1.el6.ppc64.rpm
s390x:
kernel-debug-debuginfo-2.6.32-220.13.1.el6.s390x.rpm
kernel-debuginfo-2.6.32-220.13.1.el6.s390x.rpm
kernel-debuginfo-common-s390x-2.6.32-220.13.1.el6.s390x.rpm
kernel-kdump-debuginfo-2.6.32-220.13.1.el6.s390x.rpm
perf-debuginfo-2.6.32-220.13.1.el6.s390x.rpm
python-perf-2.6.32-220.13.1.el6.s390x.rpm
x86_64:
kernel-debug-debuginfo-2.6.32-220.13.1.el6.x86_64.rpm
kernel-debuginfo-2.6.32-220.13.1.el6.x86_64.rpm
kernel-debuginfo-common-x86_64-2.6.32-220.13.1.el6.x86_64.rpm
perf-debuginfo-2.6.32-220.13.1.el6.x86_64.rpm
python-perf-2.6.32-220.13.1.el6.x86_64.rpm
Red Hat Enterprise Linux Workstation (v. 6):
Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Workstation/en/os/SRPMS/kernel-2.6.32-220.13.1.el6.src.rpm
i386:
kernel-2.6.32-220.13.1.el6.i686.rpm
kernel-debug-2.6.32-220.13.1.el6.i686.rpm
kernel-debug-debuginfo-2.6.32-220.13.1.el6.i686.rpm
kernel-debug-devel-2.6.32-220.13.1.el6.i686.rpm
kernel-debuginfo-2.6.32-220.13.1.el6.i686.rpm
kernel-debuginfo-common-i686-2.6.32-220.13.1.el6.i686.rpm
kernel-devel-2.6.32-220.13.1.el6.i686.rpm
kernel-headers-2.6.32-220.13.1.el6.i686.rpm
perf-2.6.32-220.13.1.el6.i686.rpm
perf-debuginfo-2.6.32-220.13.1.el6.i686.rpm
noarch:
kernel-doc-2.6.32-220.13.1.el6.noarch.rpm
kernel-firmware-2.6.32-220.13.1.el6.noarch.rpm
x86_64:
kernel-2.6.32-220.13.1.el6.x86_64.rpm
kernel-debug-2.6.32-220.13.1.el6.x86_64.rpm
kernel-debug-debuginfo-2.6.32-220.13.1.el6.x86_64.rpm
kernel-debug-devel-2.6.32-220.13.1.el6.x86_64.rpm
kernel-debuginfo-2.6.32-220.13.1.el6.x86_64.rpm
kernel-debuginfo-common-x86_64-2.6.32-220.13.1.el6.x86_64.rpm
kernel-devel-2.6.32-220.13.1.el6.x86_64.rpm
kernel-headers-2.6.32-220.13.1.el6.x86_64.rpm
perf-2.6.32-220.13.1.el6.x86_64.rpm
perf-debuginfo-2.6.32-220.13.1.el6.x86_64.rpm
Red Hat Enterprise Linux Workstation Optional (v. 6):
Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Workstation/en/os/SRPMS/kernel-2.6.32-220.13.1.el6.src.rpm
i386:
kernel-debug-debuginfo-2.6.32-220.13.1.el6.i686.rpm
kernel-debuginfo-2.6.32-220.13.1.el6.i686.rpm
kernel-debuginfo-common-i686-2.6.32-220.13.1.el6.i686.rpm
perf-debuginfo-2.6.32-220.13.1.el6.i686.rpm
python-perf-2.6.32-220.13.1.el6.i686.rpm
x86_64:
kernel-debug-debuginfo-2.6.32-220.13.1.el6.x86_64.rpm
kernel-debuginfo-2.6.32-220.13.1.el6.x86_64.rpm
kernel-debuginfo-common-x86_64-2.6.32-220.13.1.el6.x86_64.rpm
perf-debuginfo-2.6.32-220.13.1.el6.x86_64.rpm
python-perf-2.6.32-220.13.1.el6.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/#package
7. References:
https://www.redhat.com/security/data/cve/CVE-2012-0879.html
https://www.redhat.com/security/data/cve/CVE-2012-1090.html
https://www.redhat.com/security/data/cve/CVE-2012-1097.html
https://access.redhat.com/security/updates/classification/#moderate
https://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/6/html/6.2_Technical_Notes/kernel.html#RHSA-2012-0481
8. Contact:
The Red Hat security contact is <Ova e-mail adresa je zaštićena od spambota. Potrebno je omogućiti JavaScript da je vidite.>. More contact
details at https://access.redhat.com/security/team/contact/
Copyright 2012 Red Hat, Inc.
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