CVE-2011-1082

MEDIUM

Description

fs/eventpoll.c in the Linux kernel before 2.6.38 places epoll file descriptors within other epoll data structures without properly checking for (1) closed loops or (2) deep chains, which allows local users to cause a denial of service (deadlock or stack memory consumption) via a crafted application that makes epoll_create and epoll_ctl system calls.

References

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=22bacca48a1755f79b7e0f192ddb9fbb7fc6e64e

http://openwall.com/lists/oss-security/2011/03/02/1

http://openwall.com/lists/oss-security/2011/03/02/2

http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.38

https://bugzilla.redhat.com/show_bug.cgi?id=681575

https://lkml.org/lkml/2011/2/5/220

Details

Source: MITRE

Published: 2011-04-04

Updated: 2012-03-19

Type: CWE-399

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