CVE-2011-2695

MEDIUM

Description

Multiple off-by-one errors in the ext4 subsystem in the Linux kernel before 3.0-rc5 allow local users to cause a denial of service (BUG_ON and system crash) by accessing a sparse file in extent format with a write operation involving a block number corresponding to the largest possible 32-bit unsigned integer.

References

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=f17722f917b2f21497deb6edc62fb1683daa08e6

http://secunia.com/advisories/45193

http://www.kernel.org/pub/linux/kernel/v3.0/testing/ChangeLog-3.0-rc5

http://www.openwall.com/lists/oss-security/2011/07/15/7

http://www.openwall.com/lists/oss-security/2011/07/15/8

http://www.spinics.net/lists/linux-ext4/msg25697.html

https://bugzilla.redhat.com/show_bug.cgi?id=722557

Details

Source: MITRE

Published: 2011-07-28

Updated: 2012-03-19

Type: CWE-189

Risk Information

CVSS v2.0

Base Score: 4.9

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

Impact Score: 6.9

Exploitability Score: 3.9

Severity: MEDIUM