Public Date:
772894: CVE-2012-0044 kernel: drm: integer overflow in drm_mode_dirtyfb_ioctl()

The MITRE CVE dictionary describes this issue as:

Integer overflow in the drm_mode_dirtyfb_ioctl function in drivers/gpu/drm/drm_crtc.c in the Direct Rendering Manager (DRM) subsystem in the Linux kernel before 3.1.5 allows local users to gain privileges or cause a denial of service (memory corruption) via a crafted ioctl call.

Find out more about CVE-2012-0044 from the MITRE CVE dictionary dictionary and NIST NVD.


This issue did not affect the versions of Linux kernel as shipped with Red Hat Enterprise Linux 4 and 5 as they did not backport commit 884840aa that introduced this issue.

CVSS v2 metrics

NOTE: The following CVSS v2 metrics and score provided are preliminary and subject to review.

Base Score 6.9
Base Metrics AV:L/AC:M/Au:N/C:C/I:C/A:C
Access Vector Local
Access Complexity Medium
Authentication None
Confidentiality Impact Complete
Integrity Impact Complete
Availability Impact Complete

Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).

Red Hat Security Errata

Platform Errata Release Date
Red Hat Enterprise Linux Server EUS (v. 6.1) (kernel) RHSA-2012:1042 2012-06-26
Red Hat Enterprise Linux version 6 (kernel) RHSA-2012:0743 2012-06-18
MRG Grid for RHEL 6 Server v.2 (kernel-rt) RHSA-2012:0333 2012-02-23

Affected Packages State

Platform Package State
Red Hat Enterprise Linux Server EUS (v. 6.1) kernel Affected
Red Hat Enterprise Linux 5 kernel Not affected
Red Hat Enterprise Linux 4 kernel Not affected


Red Hat would like to thank Chen Haogang for reporting this issue.