CVE-2012-0879 - Slumped Canyon

Description

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.

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Reference

http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.33 http://www.openwall.com/lists/oss-security/2012/02/23/5 http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=61cc74fbb87af6aa551a06a370590c9bc07e29d9 http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=b69f2292063d2caf37ca9aec7d63ded203701bf3 https://github.com/torvalds/linux/commit/61cc74fbb87af6aa551a06a370590c9bc07e29d9 https://bugzilla.redhat.com/show_bug.cgi?id=796829 https://github.com/torvalds/linux/commit/b69f2292063d2caf37ca9aec7d63ded203701bf3 http://secunia.com/advisories/48545 http://www.ubuntu.com/usn/USN-1410-1 http://www.ubuntu.com/usn/USN-1408-1 http://secunia.com/advisories/48842 http://www.securitytracker.com/id?1027086 http://rhn.redhat.com/errata/RHSA-2012-0531.html http://marc.info/?l=bugtraq&m=139447903326211&w=2 http://www.ubuntu.com/usn/USN-1411-1 http://www.debian.org/security/2012/dsa-2469 http://lists.opensuse.org/opensuse-security-announce/2012-05/msg00013.html http://rhn.redhat.com/errata/RHSA-2012-0481.html

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

5.5