{"id":"CVE-2017-9605","details":"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.","modified":"2026-03-15T22:18:07.350137Z","published":"2017-06-13T19:29:00.393Z","related":["MGASA-2017-0186","MGASA-2017-0187","MGASA-2017-0188"],"references":[{"type":"ADVISORY","url":"http://www.debian.org/security/2017/dsa-3945"},{"type":"ADVISORY","url":"http://www.securityfocus.com/bid/99095"},{"type":"ADVISORY","url":"http://www.debian.org/security/2017/dsa-3927"},{"type":"FIX","url":"https://github.com/torvalds/linux/commit/07678eca2cf9c9a18584e546c2b2a0d0c9a3150c"},{"type":"FIX","url":"http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=07678eca2cf9c9a18584e546c2b2a0d0c9a3150c"}],"affected":[{"database_specific":{"unresolved_ranges":[{"events":[{"introduced":"0"},{"last_affected":"4.11.4"}]}],"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2017-9605.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"}]}