National Cyber Awareness System

Vulnerability Summary for CVE-2012-0879

Overview

The I/O implementation for block devices in the Linux kernel before 2.6.33 does not properly handle the CLONE_IO feature, which allows local users to cause a denial of service (I/O instability) by starting multiple processes that share an I/O context.

Impact

CVSS Severity (version 2.0):

CVSS Version 2 Metrics:

References to Advisories, Solutions, and Tools

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External Source: CONFIRM

Name: https://github.com/torvalds/linux/commit/b69f2292063d2caf37ca9aec7d63ded203701bf3

Hyperlink:https://github.com/torvalds/linux/commit/b69f2292063d2caf37ca9aec7d63ded203701bf3

External Source: CONFIRM

Name: https://github.com/torvalds/linux/commit/61cc74fbb87af6aa551a06a370590c9bc07e29d9

Hyperlink:https://github.com/torvalds/linux/commit/61cc74fbb87af6aa551a06a370590c9bc07e29d9

External Source: CONFIRM

Name: https://bugzilla.redhat.com/show_bug.cgi?id=796829

Hyperlink:https://bugzilla.redhat.com/show_bug.cgi?id=796829

External Source: UBUNTU

Name: USN-1410-1

Hyperlink:http://www.ubuntu.com/usn/USN-1410-1

External Source: UBUNTU

Name: USN-1408-1

Hyperlink:http://www.ubuntu.com/usn/USN-1408-1

External Source: SECTRACK

Name: 1027086

Hyperlink:http://www.securitytracker.com/id?1027086

External Source: MLIST

Name: [oss-security] 20120223 Re: CVE request -- kernel: block: CLONE_IO io_context refcounting issues

Hyperlink:http://www.openwall.com/lists/oss-security/2012/02/23/5

External Source: SECUNIA

Name: 48842

Hyperlink:http://secunia.com/advisories/48842

External Source: SECUNIA

Name: 48545

Hyperlink:http://secunia.com/advisories/48545

External Source: REDHAT

Name: RHSA-2012:0531

Hyperlink:http://rhn.redhat.com/errata/RHSA-2012-0531.html

External Source: CONFIRM

Name: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=b69f2292063d2caf37ca9aec7d63ded203701bf3

Hyperlink:http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=b69f2292063d2caf37ca9aec7d63ded203701bf3

External Source: CONFIRM

Name: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=61cc74fbb87af6aa551a06a370590c9bc07e29d9

Hyperlink:http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=61cc74fbb87af6aa551a06a370590c9bc07e29d9

External Source: CONFIRM

Name: http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.33

Hyperlink:http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.33