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VULNERABILITIES

CVE-2011-4080 Details

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 3.x Severity and Vector Strings:

No CVSS 3.x data is available for this CVE.

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39 CVEBroken Link
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=bfdc0b497faa82a0ba2f9dddcf109231dd519fcc CVE
https://github.com/torvalds/linux/commit/bfdc0b497faa82a0ba2f9dddcf109231dd519fcc CVEPatchThird Party Advisory
http://www.openwall.com/lists/oss-security/2011/10/26/10 CVEMailing ListThird Party Advisory
http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39 [email protected]Broken Link

see all 8 references

Weakness Enumeration

CWE-IDCWE NameSource
CWE-264Permissions, Privileges, and Access Controls[email protected]

Affected Products

ProductVersions
linux linux kernel
< 2.6.39

CPE

  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

7 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2011-4080
NVD Published Date:
May 24, 2012
NVD Last Modified:
Jun 16, 2026
Source:
[email protected]
CVE-2011-4080 Details - Not Deferred