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Unscored Public exploit CVE-2011-1082 EUVD-2011-1097GHSA-9r52-fvvv-j5xf

fs/eventpoll.c in the Linux kernel before 2.6.38 places epoll file descriptors within other epoll data structures without properly checking…

Published Apr 3, 2011 · Updated Aug 6, 2024 · Assigned by redhat

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.

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

Red Hat

Security tracker ↗
ReleasePackageFixed inAdvisory
RHEL 6 perf +14 2.6.32-131.0.15.el6 RHSA-2011:0542
Show 2 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
RHEL 6.0 EUS perf +14 2.6.32-71.31.1.el6 RHSA-2011:0883
Red Hat MRG 1 perf +10 2.6.33.9-rt31.64.el5rt RHSA-2011:0500

Public exploits

Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

Advisories 3

References