CVE-2011-1082
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.
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 - fs/eventpoll.c epoll Data Structure File Descriptor Local Denial of Service
OS impact
Linux kernel Affected 1 release
| Version | Status | Fixed in |
|---|---|---|
| — | Affected | 2.6.38 |
References
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=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
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=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
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.