CVE-2011-1771

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Last Modified: UTC

ModerateModerate ImpactWhat does this mean?

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Description

The CVE Program describes this issue as:

The cifs_close function in fs/cifs/file.c in the Linux kernel before 2.6.39 allows local users to cause a denial of service (NULL pointer dereference and BUG) or possibly have unspecified other impact by setting the O_DIRECT flag during an attempt to open a file on a CIFS filesystem.

Statement

This issue did not affect the Linux kernel as shipped with Red Hat Enterprise Linux 4, 5, and Red Hat Enterprise Linux MRG as they did not backport the upstream commit cdff08e7 that introduced this issue. Future kernel updates for Red Hat Enterprise Linux 6 may address this flaw.

This issue did not affect the Linux kernel as shipped with Red Hat Enterprise Linux 4, 5, and Red Hat Enterprise Linux MRG as they did not backport the upstream commit cdff08e7 that introduced this issue. Future kernel updates for Red Hat Enterprise Linux 6 may address this flaw.

Additional information

  • Bugzilla 703016: kernel: cifs oops when creating file with O_DIRECT set
  • FAQ: Frequently asked questions about CVE-2011-1771

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

4.7

4.4

Attack Vector

Local

Local

Access Complexity

Medium

Medium

Authentication

None

None

Confidentiality Impact

None

Partial

Integrity Impact

None

Partial

Availability Impact

Complete

Partial

CVSS v2 Vector

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

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

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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