CVE-2011-1083
Description
The epoll implementation in the Linux kernel 2.6.37.2 and earlier does not properly traverse a tree of epoll file descriptors, which allows local users to cause a denial of service (CPU consumption) via a crafted application that makes epoll_create and epoll_ctl system calls.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
Exploits
Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.
Exploit-DB
Linux Kernel 2.6.x - epoll Nested Structures Local Denial of Service
OS impact
Linux kernel Affected 1 release
| Version | Status | Fixed in |
|---|---|---|
| — | Affected | — |
Red Hat Affected 1 release
| Version | Status | Fixed in |
|---|---|---|
| 6.0 | Affected | — |
SUSE Affected 1 release
| Version | Status | Fixed in |
|---|---|---|
| 11 | Affected | — |
References
- http://article.gmane.org/gmane.linux.kernel/1105744
- http://article.gmane.org/gmane.linux.kernel/1105888
- http://article.gmane.org/gmane.linux.kernel/1106686
- http://lists.opensuse.org/opensuse-security-announce/2012-04/msg00021.html
- http://lists.opensuse.org/opensuse-security-announce/2012-05/msg00013.html
- http://openwall.com/lists/oss-security/2011/03/02/1
- http://openwall.com/lists/oss-security/2011/03/02/2
- http://rhn.redhat.com/errata/RHSA-2012-0862.html
- http://secunia.com/advisories/43522
- http://secunia.com/advisories/48115
- http://secunia.com/advisories/48410
- http://secunia.com/advisories/48898
- http://secunia.com/advisories/48964
- http://www.osvdb.org/71265
- https://bugzilla.redhat.com/show_bug.cgi?id=681578
- http://article.gmane.org/gmane.linux.kernel/1105744
- http://article.gmane.org/gmane.linux.kernel/1105888
- http://article.gmane.org/gmane.linux.kernel/1106686
- http://lists.opensuse.org/opensuse-security-announce/2012-04/msg00021.html
- http://lists.opensuse.org/opensuse-security-announce/2012-05/msg00013.html
- http://openwall.com/lists/oss-security/2011/03/02/1
- http://openwall.com/lists/oss-security/2011/03/02/2
- http://rhn.redhat.com/errata/RHSA-2012-0862.html
- http://secunia.com/advisories/43522
- http://secunia.com/advisories/48115
CWEs
CWE-400
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.