What’s Vulnerable › Vulnerabilities

CVE-2011-1083

• Severity: medium (CVSS 4.9 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2011-04-04 · updated 2026-06-16
• Weakness: CWE-400

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.

Affected products

• Linux kernel: through 2.6.37.2
• RedHat Enterprise Linux Desktop: 6.0
• RedHat Enterprise Linux Server: 6.0
• RedHat Enterprise Linux Workstation: 6.0
• SUSE Linux Enterprise Server 15 SP1: 11-sp1, 11-sp2
• SUSE Linux Enterprise Server: 11-sp1, 11-sp2

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

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