CVE-2012-3375

Severity: medium (CVSS 4.9 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.0% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2012-10-03 · updated 2026-06-16

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.

Affected products

Linux kernel: through 3.2.23; 3.0.1, 3.0.2, 3.0.3, 3.0.4, 3.0.5, 3.0.6 (+60)

References

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

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