CVE-2011-1013

09.05.2011, 19:55

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.

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Vector
NIST	NIST	7.2 UNKNOWN	LOCAL	LOW	AV:L/AC:L/Au:N/C:C/I:C/A:C
redhat	CNA	---			---
CVE	ADP	---			---

Base Score

CVSS 3.x

EPSS Score

Percentile: 12%

Vendor	Product	Version
linux	linux_kernel	𝑥 < 2.6.38
openbsd	openbsd	𝑥 ≤ 4.8

𝑥

= Vulnerable software versions

Ubuntu Releases

Ubuntu Product

Codename

linux

natty	Fixed 2.6.38-6.33 released
maverick	Fixed 2.6.35-29.51 released
lucid	Fixed 2.6.32-32.62 released
hardy	not-affected
dapper	dne

linux-ec2

natty	dne
maverick	ignored
lucid	Fixed 2.6.32-316.30 released
hardy	dne
dapper	dne

linux-fsl-imx51

natty	dne
maverick	dne
lucid	Fixed 2.6.31-610.27 released
hardy	dne
dapper	dne

linux-lts-backport-maverick

natty	dne
maverick	dne
lucid	Fixed 2.6.35-30.54~lucid1 released
hardy	dne
dapper	dne

linux-lts-backport-natty

natty	dne
maverick	dne
lucid	not-affected
hardy	dne

linux-mvl-dove

natty	dne
maverick	Fixed 2.6.32-417.34 released
lucid	Fixed 2.6.32-217.34 released
hardy	dne
dapper	dne

linux-source-2.6.15

natty	dne
maverick	dne
lucid	dne
hardy	dne
dapper	ignored

linux-ti-omap4

natty	Fixed 2.6.38-1204.5 released
maverick	Fixed 2.6.35-903.23 released
lucid	dne
hardy	dne
dapper	dne

Common Weakness Enumeration

CWE-787 - Out-of-bounds Write
The software writes data past the end, or before the beginning, of the intended buffer.

References

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=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%3Br2=1.42%3Bf=h

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

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