CVE-2011-1013

HIGH

Description

Integer signedness error in the drm_modeset_ctl function in (1) drivers/gpu/drm/drm_irq.c in the Direct Rendering Manager (DRM) subsystem in the Linux kernel before 2.6.38 and (2) sys/dev/pci/drm/drm_irq.c in the kernel in OpenBSD before 4.9 allows local users to trigger out-of-bounds write operations, and consequently cause a denial of service (system crash) or possibly have unspecified other impact, via a crafted num_crtcs (aka vb_num) structure member in an ioctl argument.

References

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=1922756124ddd53846877416d92ba4a802bc658f

http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.38

http://www.openbsd.org/cgi-bin/cvsweb/src/sys/dev/pci/drm/drm_irq.c

http://www.openbsd.org/cgi-bin/cvsweb/src/sys/dev/pci/drm/drm_irq.c.diff?r1=1.41;r2=1.42;f=h

http://www.securityfocus.com/bid/47639

https://bugzilla.redhat.com/show_bug.cgi?id=679925

https://exchange.xforce.ibmcloud.com/vulnerabilities/67199

Details

Source: MITRE

Published: 2011-05-09

Updated: 2017-08-17

Type: CWE-189

Risk Information

CVSS v2.0

Base Score: 7.2

Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C

Impact Score: 10

Exploitability Score: 3.9

Severity: HIGH