CVE-2011-1019

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Last Modified: UTC

Description

The CVE Program describes this issue as:

The dev_load function in net/core/dev.c in the Linux kernel before 2.6.38 allows local users to bypass an intended CAP_SYS_MODULE capability requirement and load arbitrary modules by leveraging the CAP_NET_ADMIN capability.

Statement

This issue did not affect the Linux kernel as shipped with Red Hat Enterprise Linux 4 and 5 as they did not backport the upstream commit a8f80e8f that introduced this flaw. This has been addressed in Red Hat Enterprise Linux 6 and Red Hat Enterprise MRG via https://rhn.redhat.com/errata/RHSA-2011-0498.html and https://rhn.redhat.com/errata/RHSA-2011-0500.html.

This issue did not affect the Linux kernel as shipped with Red Hat Enterprise Linux 4 and 5 as they did not backport the upstream commit a8f80e8f that introduced this flaw. This has been addressed in Red Hat Enterprise Linux 6 and Red Hat Enterprise MRG via https://rhn.redhat.com/errata/RHSA-2011-0498.html and https://rhn.redhat.com/errata/RHSA-2011-0500.html.

Additional information

  • Bugzilla 680360: kernel: CAP_SYS_MODULE bypass via CAP_NET_ADMIN
  • FAQ: Frequently asked questions about CVE-2011-1019

Common Vulnerability Scoring System (CVSS) Score Details

Important note

CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).

CVSS v2 Score Breakdown
Red HatNVD

CVSS v2 Base Score

1.5

1.9

Attack Vector

Local

Local

Access Complexity

Medium

Medium

Authentication

Single

None

Confidentiality Impact

None

None

Integrity Impact

Partial

Partial

Availability Impact

None

None

CVSS v2 Vector

Red Hat: AV:L/AC:M/Au:S/C:N/I:P/A:N

NVD: AV:L/AC:M/Au:N/C:N/I:P/A:N

Acknowledgements

Red Hat would like to thank Vasiliy Kulikov (Openwall) for reporting this issue.

Frequently Asked Questions

Why is Red Hat's CVSS v3 score or Impact different from other vendors?

My product is listed as "Under investigation" or "Affected", when will Red Hat release a fix for this vulnerability?

What can I do if my product is listed as "Will not fix"?

What can I do if my product is listed as "Fix deferred"?

What is a mitigation?

I have a Red Hat product but it is not in the above list, is it affected?

Why is my security scanner reporting my product as vulnerable to this vulnerability even though my product version is fixed or not affected?

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