Vulnerabilities
Misconfiguration
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CVE Vulnerabilities

CVE-2014-0203

Use After Free

Published: Jun 23, 2014 | Modified: Apr 12, 2025
CVSS 3.x
5.5
MEDIUM
Source:
NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS 2.x
4.9 MEDIUM
AV:L/AC:L/Au:N/C:N/I:N/A:C
RedHat/V2
4.9 MODERATE
AV:L/AC:L/Au:N/C:N/I:N/A:C
RedHat/V3
Ubuntu
MEDIUM
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Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2014-0203
CWEhttps://cwe.mitre.org/data/definitions/416.html

The __do_follow_link function in fs/namei.c in the Linux kernel before 2.6.33 does not properly handle the last pathname component during use of certain filesystems, which allows local users to cause a denial of service (incorrect free operations and system crash) via an open system call.

Weakness

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory “belongs” to the code that operates on the new pointer.

Affected Software

NameVendorStart VersionEnd Version
Linux_kernelLinux*2.6.33 (excluding)
Red Hat Enterprise Linux 6RedHatkernel-0:2.6.32-431.20.3.el6*
LinuxUbuntulucid*
LinuxUbuntuupstream*
Linux-armadaxpUbuntuupstream*
Linux-awsUbuntuupstream*
Linux-ec2Ubuntulucid*
Linux-ec2Ubuntuupstream*
Linux-floUbuntuupstream*
Linux-fsl-imx51Ubuntulucid*
Linux-fsl-imx51Ubuntuupstream*
Linux-gkeUbuntuupstream*
Linux-goldfishUbuntusaucy*
Linux-goldfishUbuntuupstream*
Linux-grouperUbuntusaucy*
Linux-grouperUbuntutrusty*
Linux-grouperUbuntuupstream*
Linux-grouperUbuntuutopic*
Linux-hweUbuntuupstream*
Linux-hwe-edgeUbuntuupstream*
Linux-linaro-omapUbuntuprecise*
Linux-linaro-omapUbuntuupstream*
Linux-linaro-sharedUbuntuprecise*
Linux-linaro-sharedUbuntuupstream*
Linux-linaro-vexpressUbuntuprecise*
Linux-linaro-vexpressUbuntuupstream*
Linux-lts-quantalUbuntuupstream*
Linux-lts-raringUbuntuupstream*
Linux-lts-saucyUbuntuupstream*
Linux-lts-trustyUbuntuupstream*
Linux-lts-utopicUbuntuupstream*
Linux-lts-vividUbuntuupstream*
Linux-lts-wilyUbuntuupstream*
Linux-lts-xenialUbuntuupstream*
Linux-maguroUbuntusaucy*
Linux-maguroUbuntutrusty*
Linux-maguroUbuntuupstream*
Linux-makoUbuntusaucy*
Linux-makoUbuntuupstream*
Linux-mantaUbuntusaucy*
Linux-mantaUbuntuupstream*
Linux-mvl-doveUbuntulucid*
Linux-mvl-doveUbuntuupstream*
Linux-qcm-msmUbuntulucid*
Linux-qcm-msmUbuntuprecise*
Linux-qcm-msmUbuntuupstream*
Linux-raspi2Ubuntuupstream*
Linux-raspi2Ubuntuvivid/ubuntu-core*
Linux-snapdragonUbuntuupstream*
Linux-ti-omap4Ubuntuupstream*

Potential Mitigations

References

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