Oracle Linux 5 / 6 : Unbreakable Enterprise kernel (ELSA-2012-2026)

Medium Nessus Plugin ID 68679


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


Description of changes:

* CVE-2012-2745: Denial-of-service in kernel key management.

A potential double-free of the replacement session keyring on fork() could result in a denial-of-service by a local, unprivileged user.

* CVE-2011-1083: Algorithmic denial of service in epoll.

A flaw was found in the way the Linux kernel's Event Poll (epoll) subsystem handled large, nested epoll structures. A local, unprivileged user could use this flaw to cause a denial of service.

- epoll: epoll_wait() should not use timespec_add_ns() (Eric Dumazet)
- epoll: clear the tfile_check_list on -ELOOP (Joe Jin) {CVE-2012-3375}
- Don't limit non-nested epoll paths (Jason Baron)
- epoll: kabi fixups for epoll limit wakeup paths (Joe Jin) {CVE-2011-1083}
- epoll: limit paths (Jason Baron) {CVE-2011-1083}
- eventpoll: fix comment typo 'evenpoll' (Paul Bolle)
- epoll: fix compiler warning and optimize the non-blocking path (Shawn Bohrer)
- epoll: move ready event check into proper inline (Davide Libenzi)
- epoll: make epoll_wait() use the hrtimer range feature (Shawn Bohrer)
- select: rename estimate_accuracy() to select_estimate_accuracy() (Andrew Morton)
- cred: copy_process() should clear child->replacement_session_keyring (Oleg Nesterov) {CVE-2012-2745}


Update the affected unbreakable enterprise kernel packages.

See Also

Plugin Details

Severity: Medium

ID: 68679

File Name: oraclelinux_ELSA-2012-2026.nasl

Version: $Revision: 1.6 $

Type: local

Agent: unix

Published: 2013/07/12

Modified: 2015/12/01

Dependencies: 12634

Risk Information

Risk Factor: Medium


Base Score: 4.9

Temporal Score: 4.3

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

Temporal Vector: CVSS2#E:ND/RL:OF/RC:C

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-2.6.32-300.29.2.el5uek, p-cpe:/a:oracle:linux:mlnx_en-2.6.32-300.29.2.el5uekdebug, p-cpe:/a:oracle:linux:mlnx_en-2.6.32-300.29.2.el6uek, p-cpe:/a:oracle:linux:mlnx_en-2.6.32-300.29.2.el6uekdebug, p-cpe:/a:oracle:linux:ofa-2.6.32-300.29.2.el5uek, p-cpe:/a:oracle:linux:ofa-2.6.32-300.29.2.el5uekdebug, p-cpe:/a:oracle:linux:ofa-2.6.32-300.29.2.el6uek, p-cpe:/a:oracle:linux:ofa-2.6.32-300.29.2.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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2012/07/18

Reference Information

CVE: CVE-2011-1083, CVE-2012-2745, CVE-2012-3375

BID: 46630, 54283, 54365