Linux Kernel up to 4.8.14 crypto/mcryptd.c null pointer dereference

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

Summaryinfo

A vulnerability classified as problematic was found in Linux Kernel up to 4.8.14. This affects an unknown function of the file crypto/mcryptd.c. The manipulation results in null pointer dereference. This vulnerability is identified as CVE-2016-10147. The attack is only possible with local access. There is not any exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Linux Kernel up to 4.8.14 (Operating System). Affected is an unknown function of the file crypto/mcryptd.c. The manipulation with an unknown input leads to a null pointer dereference vulnerability. CWE is classifying the issue as CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. This is going to have an impact on availability. CVE summarizes:

crypto/mcryptd.c in the Linux kernel before 4.8.15 allows local users to cause a denial of service (NULL pointer dereference and system crash) by using an AF_ALG socket with an incompatible algorithm, as demonstrated by mcryptd(md5).

The bug was discovered 01/18/2017. The weakness was released 01/18/2017 (Website). The advisory is available at git.kernel.org. This vulnerability is traded as CVE-2016-10147 since 01/18/2017. Local access is required to approach this attack. The successful exploitation requires a authentication. Technical details are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 97016 (Ubuntu 16.04 LTS : linux, linux-raspi2, linux-snapdragon vulnerabilities (USN-3189-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Ubuntu Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 169749 (OpenSuSE Security Update for the Linux Kernel (openSUSE-SU-2017:0458-1)).

Upgrading to version 4.8.15 eliminates this vulnerability. A possible mitigation has been published 3 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (97016) and SecurityFocus (BID 95677†). 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: 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

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
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NVD Base Score: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
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: 97016
Nessus Name: Ubuntu 16.04 LTS : linux, linux-raspi2, linux-snapdragon vulnerabilities (USN-3189-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 871165
OpenVAS Name: RedHat Update for kernel RHSA-2017:1842-01
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: Kernel 4.8.15
Patch: git.kernel.org

Timelineinfo

12/02/2016 🔍
01/18/2017 +47 days 🔍
01/18/2017 +0 days 🔍
01/18/2017 +0 days 🔍
01/18/2017 +0 days 🔍
01/19/2017 +1 days 🔍
02/03/2017 +15 days 🔍
02/06/2017 +3 days 🔍
05/13/2026 +3383 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: USN-3189-1
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-10147 (🔍)
GCVE (CVE): GCVE-0-2016-10147
GCVE (VulDB): GCVE-100-95466
SecurityFocus: 95677 - Linux Kernel 'crypto/mcryptd.c' Denial of Service Vulnerability
OSVDB: - CVE-2016-10147 - Linux - Denial of Service Issue

Entryinfo

Created: 01/19/2017 09:38
Updated: 05/13/2026 16:18
Changes: 01/19/2017 09:38 (75), 07/24/2020 12:51 (7), 11/01/2022 10:05 (4), 11/01/2022 10:11 (1), 05/13/2026 16:18 (17)
Complete: 🔍
Cache ID: 216::103

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