Vulnerabilities
Misconfiguration
Compliance
CVE Vulnerabilities

CVE-2011-1771

NULL Pointer Dereference

Published: Sep 06, 2011 | Modified: Apr 11, 2025
CVSS 3.x
7.8
HIGH
Source:
NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 2.x
4.4 MEDIUM
AV:L/AC:M/Au:N/C:P/I:P/A:P
RedHat/V2
4.7 MODERATE
AV:L/AC:M/Au:N/C:N/I:N/A:C
RedHat/V3
Ubuntu
MEDIUM
Vulnerability-free packages from our partners
root.io logo minimus.io logo echo.ai logo
Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2011-1771
CWEhttps://cwe.mitre.org/data/definitions/476.html

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.

Weakness

The product dereferences a pointer that it expects to be valid but is NULL.

Affected Software

NameVendorStart VersionEnd Version
Linux_kernelLinux*2.6.39 (excluding)
Red Hat Enterprise Linux 6RedHatkernel-0:2.6.32-131.2.1.el6*
LinuxUbuntunatty*
LinuxUbuntuupstream*
Linux-ec2Ubuntumaverick*
Linux-ec2Ubuntuupstream*
Linux-fsl-imx51Ubuntuupstream*
Linux-lts-backport-maverickUbuntuupstream*
Linux-lts-backport-nattyUbuntulucid*
Linux-lts-backport-nattyUbuntuupstream*
Linux-lts-backport-oneiricUbuntuupstream*
Linux-mvl-doveUbuntuupstream*
Linux-ti-omap4Ubuntunatty*
Linux-ti-omap4Ubuntuupstream*

Potential Mitigations

References

Aqua Security is the largest pure-play cloud native security company, providing customers the freedom to innovate and run their businesses with minimal friction. The Aqua Cloud Native Security Platform provides prevention, detection, and response automation across the entire application lifecycle to secure the build, secure cloud infrastructure and secure running workloads wherever they are deployed.
Copyright © 2026 Aqua Security Software Ltd.   Privacy Policy | Terms of Use