Linux Kernel up to 4.9.6 vc4_gem.c vc4_get_bcl integer overflow

CVSS Meta Temp Score
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CTI Interest Score
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6.4$0-$5k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in Linux Kernel up to 4.9.6. This affects the function vc4_get_bcl of the file drivers/gpu/drm/vc4/vc4_gem.c. Such manipulation leads to integer overflow. This vulnerability is documented as CVE-2017-5576. The attack needs to be performed locally. There is not any exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 4.9.6 (Operating System) and classified as critical. Affected by this issue is the function vc4_get_bcl of the file drivers/gpu/drm/vc4/vc4_gem.c. The manipulation with an unknown input leads to a integer overflow vulnerability. Using CWE to declare the problem leads to CWE-190. The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Integer overflow in 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 allows local users to cause a denial of service or possibly have unspecified other impact via a crafted size value in a VC4_SUBMIT_CL ioctl call.

The bug was discovered 01/18/2017. The weakness was released 02/06/2017 by Murray McAllister (Website). The advisory is available at git.kernel.org. This vulnerability is handled as CVE-2017-5576 since 01/24/2017. Local access is required to approach this attack. The successful exploitation needs a simple authentication. Technical details 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 169748 (OpenSuSE Security Update for the Linux Kernel (openSUSE-SU-2017:0456-1)).

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 95767†). Entries connected to this vulnerability are available at VDB-95342 and VDB-96567. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.4

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Integer overflow
CWE: CWE-190 / CWE-189
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: 0f2ff82e11c86c05d051cae32b58226392d33bbf
Researcher: Murray McAllister
Status: Not defined
Confirmation: 🔍

CVE: CVE-2017-5576 (🔍)
GCVE (CVE): GCVE-0-2017-5576
GCVE (VulDB): GCVE-100-96566
SecurityFocus: 95767 - Linux Kernel CVE-2017-5576 Integer Overflow Vulnerability
OSVDB: - CVE-2017-5576 - Linux - Integer Overflow Issue

See also: 🔍

Entryinfo

Created: 02/06/2017 19:26
Updated: 11/11/2022 18:25
Changes: 02/06/2017 19:26 (72), 08/11/2020 10:03 (6), 11/11/2022 18:17 (4), 11/11/2022 18:25 (11)
Complete: 🔍
Cache ID: 216:8CE:103

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