Linux Kernel up to 4.9.6 VideoCore DRM Driver vc4_gem.c vc4_get_bcl 7pk error

CVSS Meta Temp Score
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CTI Interest Score
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4.3$0-$5k0.00

Summaryinfo

A vulnerability identified as problematic has been detected in Linux Kernel up to 4.9.6. This impacts the function vc4_get_bcl of the file drivers/gpu/drm/vc4/vc4_gem.c of the component VideoCore DRM Driver. Performing a manipulation results in 7pk error. This vulnerability is reported as CVE-2017-5577. The attack requires a local approach. No exploit exists. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 4.9.6 (Operating System). It has been classified as problematic. This affects the function vc4_get_bcl of the file drivers/gpu/drm/vc4/vc4_gem.c of the component VideoCore DRM Driver. The manipulation with an unknown input leads to a 7pk error vulnerability. CWE is classifying the issue as CWE-388. This is going to have an impact on availability. The summary by CVE is:

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 bug was discovered 01/18/2017. The weakness was disclosed 02/06/2017 by Murray McAllister (Website). It is possible to read the advisory at git.kernel.org. This vulnerability is uniquely identified as CVE-2017-5577 since 01/24/2017. Attacking locally is a requirement. A authentication is required for exploitation. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability was handled as a non-public zero-day exploit for at least 19 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 97274 (openSUSE Security Update : the Linux Kernel (openSUSE-2017-245)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 276417 (Fedora Security Update for kernel (FEDORA-2017-6cc158c193)).

Upgrading to version 4.9.7 eliminates this vulnerability. A possible mitigation has been published 1 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (97274) and SecurityFocus (BID 95765†). The entries VDB-95342, VDB-96553, VDB-96554 and VDB-96564 are pretty similar. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.4
VulDB Meta Temp Score: 4.3

VulDB Base Score: 3.3
VulDB Temp Score: 3.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: 7pk error
CWE: CWE-388
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 97274
Nessus Name: openSUSE Security Update : the Linux Kernel (openSUSE-2017-245)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 867773
OpenVAS Name: Fedora Update for kernel FEDORA-2017-81fbd592d4
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: Kernel 4.9.7
Patch: git.kernel.org

Timelineinfo

01/18/2017 🔍
01/24/2017 +6 days 🔍
01/24/2017 +0 days 🔍
02/06/2017 +13 days 🔍
02/06/2017 +0 days 🔍
02/06/2017 +0 days 🔍
02/13/2017 +7 days 🔍
02/21/2017 +8 days 🔍
11/11/2022 +2089 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: 6b8ac63847bc2f958dd93c09edc941a0118992d9
Researcher: Murray McAllister
Status: Not defined
Confirmation: 🔍

CVE: CVE-2017-5577 (🔍)
GCVE (CVE): GCVE-0-2017-5577
GCVE (VulDB): GCVE-100-96567
SecurityFocus: 95765 - Linux Kernel CVE-2017-5577 Remote Buffer Overflow Vulnerability
OSVDB: - CVE-2017-5577 - Linux - Denial of Service Issue

See also: 🔍

Entryinfo

Created: 02/06/2017 19:26
Updated: 11/11/2022 18:34
Changes: 02/06/2017 19:26 (79), 08/11/2020 10:07 (8), 11/11/2022 18:34 (5)
Complete: 🔍
Cache ID: 216:6A7:103

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