CentOS Update for kernel CESA-2012:0052 centos6

# SPDX-FileCopyrightText: 2012 Greenbone AG
# Some text descriptions might be excerpted from (a) referenced
# source(s), and are Copyright (C) by the respective right holder(s).
#
# SPDX-License-Identifier: GPL-2.0-only

if(description)
{
  script_xref(name:"URL", value:"http://lists.centos.org/pipermail/centos-announce/2012-January/018384.html");
  script_oid("1.3.6.1.4.1.25623.1.0.881102");
  script_version("2026-04-24T06:23:04+0000");
  script_tag(name:"last_modification", value:"2026-04-24 06:23:04 +0000 (Fri, 24 Apr 2026)");
  script_tag(name:"creation_date", value:"2012-07-30 16:08:56 +0530 (Mon, 30 Jul 2012)");
  script_cve_id("CVE-2012-0056");
  script_tag(name:"cvss_base", value:"6.9");
  script_tag(name:"cvss_base_vector", value:"AV:L/AC:M/Au:N/C:C/I:C/A:C");
  script_xref(name:"CESA", value:"2012:0052");
  script_name("CentOS Update for kernel CESA-2012:0052 centos6");

  script_tag(name:"summary", value:"The remote host is missing an update for the 'kernel'
  package(s) announced via the referenced advisory.");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2012 Greenbone AG");
  script_family("CentOS Local Security Checks");
  script_dependencies("gather-package-list.nasl");
  script_mandatory_keys("ssh/login/centos", "ssh/login/rpms", re:"ssh/login/release=CentOS6");
  script_tag(name:"affected", value:"kernel on CentOS 6");
  script_tag(name:"solution", value:"Please install the updated packages.");
  script_tag(name:"insight", value:"The kernel packages contain the Linux kernel, the core of any Linux
  operating system.

  This update fixes the following security issue:

  * It was found that permissions were not checked properly in the Linux
  kernel when handling the /proc/[pid]/mem writing functionality. A local,
  unprivileged user could use this flaw to escalate their privileges. Refer
  to Red Hat Knowledgebase article DOC-69129, linked to in the References,
  for further information. (CVE-2012-0056, Important)

  Red Hat would like to thank Jüri Aedla for reporting this issue.

  This update fixes the following bugs:

  * The RHSA-2011:1849 kernel update introduced a bug in the Linux kernel
  scheduler, causing a 'WARNING: at kernel/sched.c:5915 thread_return'
  message and a call trace to be logged. This message was harmless, and was
  not due to any system malfunctions or adverse behavior. With this update,
  the WARN_ON_ONCE() call in the scheduler that caused this harmless message
  has been removed. (BZ#768288)

  * The RHSA-2011:1530 kernel update introduced a regression in the way
  the Linux kernel maps ELF headers for kernel modules into kernel memory.
  If a third-party kernel module is compiled on a Red Hat Enterprise Linux
  system with a kernel prior to RHSA-2011:1530, then loading that module on
  a system with RHSA-2011:1530 kernel would result in corruption of one byte
  in the memory reserved for the module. In some cases, this could prevent
  the module from functioning correctly. (BZ#769595)

  * On some SMP systems the tsc may erroneously be marked as unstable during
  early system boot or while the system is under heavy load. A 'Clocksource
  tsc unstable' message was logged when this occurred. As a result the system
  would switch to the slower access, but higher precision HPET clock.

  The 'tsc=reliable' kernel parameter is supposed to avoid this problem by
  indicating that the system has a known good clock, however, the parameter
  only affected run time checks.  A fix has been put in to avoid the boot
  time checks so that the TSC remains as the clock for the duration of
  system runtime. (BZ#755867)

  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.");
  script_tag(name:"qod_type", value:"package");
  script_tag(name:"solution_type", value:"VendorFix");
  exit(0);
}

include("revisions-lib.inc");
include("pkg-lib-rpm.inc");

release = rpm_get_ssh_release();
if(!release)
  exit(0);

res = "";

if(release == "CentOS6")
{

  if ((res = isrpmvuln(pkg:"kernel", rpm:"kernel~2.6.32~220.4.1.el6", rls:"CentOS6")) != NULL)
  {
    security_message(data:res);
    exit(0);
  }

  if ((res = isrpmvuln(pkg:"kernel-debug", rpm:"kernel-debug~2.6.32~220.4.1.el6", rls:"CentOS6")) != NULL)
  {
    security_message(data:res);
    exit(0);
  }

  if ((res = isrpmvuln(pkg:"kernel-debug-devel", rpm:"kernel-debug-devel~2.6.32~220.4.1.el6", rls:"CentOS6")) != NULL)
  {
    security_message(data:res);
    exit(0);
  }

  if ((res = isrpmvuln(pkg:"kernel-devel", rpm:"kernel-devel~2.6.32~220.4.1.el6", rls:"CentOS6")) != NULL)
  {
    security_message(data:res);
    exit(0);
  }

  if ((res = isrpmvuln(pkg:"kernel-doc", rpm:"kernel-doc~2.6.32~220.4.1.el6", rls:"CentOS6")) != NULL)
  {
    security_message(data:res);
    exit(0);
  }

  if ((res = isrpmvuln(pkg:"kernel-firmware", rpm:"kernel-firmware~2.6.32~220.4.1.el6", rls:"CentOS6")) != NULL)
  {
    security_message(data:res);
    exit(0);
  }

  if ((res = isrpmvuln(pkg:"kernel-headers", rpm:"kernel-headers~2.6.32~220.4.1.el6", rls:"CentOS6")) != NULL)
  {
    security_message(data:res);
    exit(0);
  }

  if ((res = isrpmvuln(pkg:"perf", rpm:"perf~2.6.32~220.4.1.el6", rls:"CentOS6")) != NULL)
  {
    security_message(data:res);
    exit(0);
  }

  if ((res = isrpmvuln(pkg:"python-perf", rpm:"python-perf~2.6.32~220.4.1.el6", rls:"CentOS6")) != NULL)
  {
    security_message(data:res);
    exit(0);
  }

  if (__pkg_match) exit(99);
  exit(0);
}