CVE-2017-5577

MEDIUM

Description

The vc4_get_bcl function in drivers/gpu/drm/vc4/vc4_gem.c in the VideoCore DRM driver in the Linux kernel before 4.9.7 does not set an errno value upon certain overflow detections, which allows local users to cause a denial of service (incorrect pointer dereference and OOPS) via inconsistent size values in a VC4_SUBMIT_CL ioctl call.

References

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=6b8ac63847bc2f958dd93c09edc941a0118992d9

http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.7

http://www.openwall.com/lists/oss-security/2017/01/21/7

http://www.securityfocus.com/bid/95765

https://bugzilla.redhat.com/show_bug.cgi?id=1416437

https://github.com/torvalds/linux/commit/6b8ac63847bc2f958dd93c09edc941a0118992d9

https://lkml.org/lkml/2017/1/17/759

Details

Source: MITRE

Published: 2017-02-06

Updated: 2017-02-08

Type: CWE-388

Risk Information

CVSS v2.0

Base Score: 4.9

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

Impact Score: 6.9

Exploitability Score: 3.9

Severity: MEDIUM

CVSS v3.0

Base Score: 5.5

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Impact Score: 3.6

Exploitability Score: 1.8

Severity: MEDIUM