Oracle Linux 5 / 6 : Unbreakable Enterprise kernel (ELSA-2012-2008)

High Nessus Plugin ID 68671

Synopsis

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

Description

Description of changes:

* 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.


* 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.

kernel-uek:

[2.6.39-100.6.1.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}

Solution

Update the affected unbreakable enterprise kernel packages.

See Also

https://oss.oracle.com/pipermail/el-errata/2012-April/002765.html

https://oss.oracle.com/pipermail/el-errata/2012-April/002767.html

Plugin Details

Severity: High

ID: 68671

File Name: oraclelinux_ELSA-2012-2008.nasl

Version: 1.11

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, 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-2012-1090, CVE-2012-1097