CVE-2011-4080

MediumCVSS 4.0/10Last modified Jun 16, 2026

Description

The sysrq_sysctl_handler function in kernel/sysctl.c in the Linux kernel before 2.6.39 does not require the CAP_SYS_ADMIN capability to modify the dmesg_restrict value, which allows local users to bypass intended access restrictions and read the kernel ring buffer by leveraging root privileges, as demonstrated by a root user in a Linux Containers (aka LXC) environment.

Metrics

CVSS 2.0 4.0/10AV:L/AC:H/Au:N/C:C/I:N/A:N

Weakness enumeration

CWE-264

Affected software

No affected versions have been published.

Timeline

Published: May 24, 2012
Last modified: Jun 16, 2026
NVD status: Modified

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