Permissions, Privileges, and Access Controls in Linux kernel - CVE-2014-1438

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Main Vulnerability Database Vulnerabilities #VU42139

Permissions, Privileges, and Access Controls in Linux kernel - CVE-2014-1438

Published: January 19, 2014 / Updated: August 10, 2020


Vulnerability identifier: #VU42139
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2014-1438
CWE-ID: CWE-264
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel

Detailed vulnerability description

The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.

The restore_fpu_checking function in arch/x86/include/asm/fpu-internal.h in the Linux kernel before 3.12.8 on the AMD K7 and K8 platforms does not clear pending exceptions before proceeding to an EMMS instruction, which allows local users to cause a denial of service (task kill) or possibly gain privileges via a crafted application.


How to mitigate CVE-2014-1438

Install update from vendor's website.

Sources