Oracle Linux 5 / 6 : Unbreakable Enterprise kernel (ELSA-2012-2007)

High Nessus Plugin ID 68670

Synopsis

The remote Oracle Linux host is missing one or more security updates.

Description

Description of changes:

* CVE-2012-0879: Denial of service in CLONE_IO.

CLONE_IO reference counting error could be exploited by an unprivileged local user to cause denial of service.


* CVE-2012-1097: NULL pointer dereference in the ptrace subsystem.

Under certain circumstances, ptrace-ing a process could lead to a NULL pointer dereference and kernel panic.


* CVE-2012-1090: Denial of service in the CIFS filesystem reference counting.

Under certain circumstances, the CIFS filesystem would open a file on lookup. If the file was determined later to be a FIFO or any other special file the file handle would be leaked, leading to reference counting mismatch and a kernel OOPS on unmount.

An unprivileged local user could use this flaw to crash the system.

kernel-uek:

[2.6.32-300.21.1.el6uek]
- regset: Return -EFAULT, not -EIO, on host-side memory fault (H. Peter Anvin) CVE-2012-1097
- regset: Prevent NULL pointer reference on readonly regsets (H. Peter Anvin) CVE-2012-1097
- cifs: fix dentry refcount leak when opening a FIFO on lookup (Jeff Layton) CVE-2012-1090
- block: Fix io_context leak after failure of clone with CLONE_IO (Louis Rilling) CVE-2012-0879

Solution

Update the affected unbreakable enterprise kernel packages.

See Also

https://oss.oracle.com/pipermail/el-errata/2012-April/002764.html

https://oss.oracle.com/pipermail/el-errata/2012-April/002766.html

Plugin Details

Severity: High

ID: 68670

File Name: oraclelinux_ELSA-2012-2007.nasl

Version: 1.13

Type: local

Agent: unix

Published: 2013/07/12

Updated: 2020/09/24

Dependencies: 12634, 122878

Risk Information

Risk Factor: High

CVSS v2.0

Base Score: 7.2

Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C

CVSS v3.0

Base Score: 7.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Vulnerability Information

CPE: p-cpe:/a:oracle:linux:kernel-uek, p-cpe:/a:oracle:linux:kernel-uek-debug, p-cpe:/a:oracle:linux:kernel-uek-debug-devel, p-cpe:/a:oracle:linux:kernel-uek-devel, p-cpe:/a:oracle:linux:kernel-uek-doc, p-cpe:/a:oracle:linux:kernel-uek-firmware, p-cpe:/a:oracle:linux:kernel-uek-headers, p-cpe:/a:oracle:linux:mlnx_en-2.6.32-300.21.1.el5uek, p-cpe:/a:oracle:linux:mlnx_en-2.6.32-300.21.1.el5uekdebug, p-cpe:/a:oracle:linux:mlnx_en-2.6.32-300.21.1.el6uek, p-cpe:/a:oracle:linux:mlnx_en-2.6.32-300.21.1.el6uekdebug, p-cpe:/a:oracle:linux:ofa-2.6.32-300.21.1.el5uek, p-cpe:/a:oracle:linux:ofa-2.6.32-300.21.1.el5uekdebug, p-cpe:/a:oracle:linux:ofa-2.6.32-300.21.1.el6uek, p-cpe:/a:oracle:linux:ofa-2.6.32-300.21.1.el6uekdebug, cpe:/o:oracle:linux:5, cpe:/o:oracle:linux:6

Required KB Items: Host/local_checks_enabled, Host/OracleLinux, Host/RedHat/release, Host/RedHat/rpm-list

Patch Publication Date: 2012/04/23

Vulnerability Publication Date: 2012/05/17

Reference Information

CVE: CVE-2012-0879, CVE-2012-1090, CVE-2012-1097