CVE-2017-5577

Severity

49%

Complexity

39%

Confidentiality

115%

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.

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.

CVSS 3.0 Base Score 5.5. CVSS Attack Vector: local. CVSS Attack Complexity: low. CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H).

CVSS 2.0 Base Score 4.9. CVSS Attack Vector: local. CVSS Attack Complexity: low. CVSS Vector: (AV:L/AC:L/Au:N/C:N/I:N/A:C).

Overview

First reported 8 years ago

2017-02-06 06:59:00

Last updated 8 years ago

2017-02-08 18:32:00

Affected Software

Linux Kernel

References

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

Issue Tracking, Patch, Third Party Advisory

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

Release Notes, Vendor Advisory

[oss-security] 20170122 CVE request: Linux kernel: vc4: int overflow leading to heap-based buffer overflow

Mailing List, Patch, Third Party Advisory

95765

Third Party Advisory, VDB Entry

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

Issue Tracking, Patch

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

Issue Tracking, Patch, Third Party Advisory

[linux-kernel] 20170118 [PATCH 2/2] drm/vc4: Return -EINVAL on the overflow checks failing.

Mailing List, Patch, Third Party Advisory

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