CVE-2012-3375

Public Exploit

Description

The epoll_ctl system call in fs/eventpoll.c in the Linux kernel before 3.2.24 does not properly handle ELOOP errors in EPOLL_CTL_ADD operations, which allows local users to cause a denial of service (file-descriptor consumption and system crash) via a crafted application that attempts to create a circular epoll dependency. NOTE: this vulnerability exists because of an incorrect fix for CVE-2011-1083.

4.9

CVSS

Severity: Medium

CVSS 2.0 •

EPSS 0.10%

Vendor Advisory ubuntu.com

Affected: n/a n/a

References

Link	Tags
https://downloads.avaya.com/css/P8/documents/100165733
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.2.24
http://www.securitytracker.com/id?1027237	vdb entry
https://github.com/torvalds/linux/commit/13d518074a952d33d47c428419693f63389547e9	exploit
http://secunia.com/advisories/51164	third party advisory
http://www.openwall.com/lists/oss-security/2012/07/04/2	mailing list
http://ubuntu.com/usn/usn-1529-1	vendor advisory
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=13d518074a952d33d47c428419693f63389547e9
https://bugzilla.redhat.com/show_bug.cgi?id=837502

Frequently Asked Questions

What is the severity of CVE-2012-3375?: CVE-2012-3375 has been scored as a medium severity vulnerability.
How to fix CVE-2012-3375?: To fix CVE-2012-3375, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2012-3375 being actively exploited in the wild?: It is possible that CVE-2012-3375 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.

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