Vulnerability identifier: #VU45060
Vulnerability risk: High
CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-787
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
Linux kernel
Operating systems & Components /
Operating system
Vendor: Linux Foundation
Description
The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.
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.
Mitigation
Install update from vendor's website.
Vulnerable software versions
Linux kernel: 2.6.0 - 2.6.37.6
External links
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
http://bugzilla.redhat.com/show_bug.cgi?id=679925
http://exchange.xforce.ibmcloud.com/vulnerabilities/67199
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.