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Information Exposure Affecting kernel-uek-debug package, versions <0:4.1.12-124.45.6.el6uek

Severity

 Recommended
high

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.04% (5th percentile)

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  • Snyk IDSNYK-ORACLE6-KERNELUEKDEBUG-2579941
  • published10 Apr 2022
  • disclosed13 Jun 2017
Report a new vulnerability Found a mistake?

Introduced: 13 Jun 2017

CVE-2017-9605  (opens in a new tab)
CWE-200  (opens in a new tab)

How to fix?

Upgrade Oracle:6 kernel-uek-debug to version 0:4.1.12-124.45.6.el6uek or higher.
This issue was patched in ELSA-2020-5962.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-uek-debug package and not the kernel-uek-debug package as distributed by Oracle. See How to fix? for Oracle:6 relevant fixed versions and status.

The vmw_gb_surface_define_ioctl function (accessible via DRM_IOCTL_VMW_GB_SURFACE_CREATE) in drivers/gpu/drm/vmwgfx/vmwgfx_surface.c in the Linux kernel through 4.11.4 defines a backup_handle variable but does not give it an initial value. If one attempts to create a GB surface, with a previously allocated DMA buffer to be used as a backup buffer, the backup_handle variable does not get written to and is then later returned to user space, allowing local users to obtain sensitive information from uninitialized kernel memory via a crafted ioctl call.