CVE-2017-9605

medium
New! CVE Severity Now Using CVSS v3

The calculated severity for CVEs has been updated to use CVSS v3 by default. CVEs that do not have a CVSS v3 score will fall back CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Description

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.

References

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=07678eca2cf9c9a18584e546c2b2a0d0c9a3150c

http://www.debian.org/security/2017/dsa-3927

http://www.debian.org/security/2017/dsa-3945

http://www.securityfocus.com/bid/99095

https://github.com/torvalds/linux/commit/07678eca2cf9c9a18584e546c2b2a0d0c9a3150c

Details

Source: MITRE

Published: 2017-06-13

Updated: 2017-11-04

Type: CWE-200

Risk Information

CVSS v2

Base Score: 4.9

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

Impact Score: 6.9

Exploitability Score: 3.9

Severity: MEDIUM

CVSS v3

Base Score: 5.5

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

Impact Score: 3.6

Exploitability Score: 1.8

Severity: MEDIUM

Vulnerable Software

Configuration 1

OR

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to 4.11.4 (inclusive)

Tenable Plugins

View all (15 total)

IDNameProductFamilySeverity
143454OracleVM 3.4 : Unbreakable / etc (OVMSA-2020-0054)NessusOracleVM Local Security Checks
medium
143427Oracle Linux 6 / 7 : Unbreakable Enterprise kernel (ELSA-2020-5962)NessusOracle Linux Local Security Checks
medium
124827EulerOS Virtualization 3.0.1.0 : kernel (EulerOS-SA-2019-1504)NessusHuawei Local Security Checks
critical
124796EulerOS Virtualization for ARM 64 3.0.1.0 : kernel (EulerOS-SA-2019-1472)NessusHuawei Local Security Checks
high
121706Photon OS 1.0: Linux PHSA-2017-0022NessusPhotonOS Local Security Checks
high
111871Photon OS 1.0: Glibc / Linux PHSA-2017-0022 (deprecated)NessusPhotonOS Local Security Checks
high
102550Debian DSA-3945-1 : linux - security update (Stack Clash)NessusDebian Local Security Checks
high
102211Debian DSA-3927-1 : linux - security update (Stack Clash)NessusDebian Local Security Checks
high
102071Ubuntu 16.04 LTS : linux-hwe vulnerabilities (USN-3371-1)NessusUbuntu Local Security Checks
medium
101973Ubuntu 16.04 LTS : linux-aws, linux-gke vulnerabilities (USN-3364-3)NessusUbuntu Local Security Checks
medium
101952Ubuntu 14.04 LTS : linux-lts-xenial vulnerabilities (USN-3364-2)NessusUbuntu Local Security Checks
medium
101951Ubuntu 16.04 LTS : linux, linux-raspi2, linux-snapdragon vulnerabilities (USN-3364-1)NessusUbuntu Local Security Checks
medium
101928Ubuntu 14.04 LTS : linux vulnerabilities (USN-3360-1)NessusUbuntu Local Security Checks
critical
101894Ubuntu 16.10 : linux, linux-raspi2 vulnerabilities (USN-3359-1)NessusUbuntu Local Security Checks
critical
101893Ubuntu 17.04 : linux, linux-raspi2 vulnerabilities (USN-3358-1)NessusUbuntu Local Security Checks
medium