CVE-2011-1013

Published: 09 May 2011

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.

From the Ubuntu security team

Matthiew Herrb discovered that the drm modeset interface did not correctly handle a signed comparison. A local attacker could exploit this to crash the system or possibly gain root privileges.

Priority

Low

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
Upstream
Released (2.6.38~rc7)
Patches:
Introduced by 0a3e67a4caac273a3bfc4ced3da364830b1ab241
Fixed by 1922756124ddd53846877416d92ba4a802bc658f
linux-ec2
Launchpad, Ubuntu, Debian
Upstream
Released (2.6.38~rc7)
linux-fsl-imx51
Launchpad, Ubuntu, Debian
Upstream
Released (2.6.38~rc7)
linux-lts-backport-maverick
Launchpad, Ubuntu, Debian
Upstream
Released (2.6.38~rc7)
linux-lts-backport-natty
Launchpad, Ubuntu, Debian
Upstream
Released (2.6.38~rc7)
linux-mvl-dove
Launchpad, Ubuntu, Debian
Upstream
Released (2.6.38~rc7)
linux-source-2.6.15
Launchpad, Ubuntu, Debian
Upstream
Released (2.6.38~rc7)
linux-ti-omap4
Launchpad, Ubuntu, Debian
Upstream
Released (2.6.38~rc7)