Linux Kernel up to 4.5 ion.c ion_ioctl use after free

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

Summaryinfo

A vulnerability classified as problematic has been found in Linux Kernel up to 4.5. This affects the function ion_ioctl of the file drivers/staging/android/ion/ion.c. Performing a manipulation results in use after free. This vulnerability is identified as CVE-2016-9120. The attack is only possible with local access. There is not any exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Linux Kernel up to 4.5 (Operating System). This affects the function ion_ioctl of the file drivers/staging/android/ion/ion.c. The manipulation with an unknown input leads to a use after free vulnerability. CWE is classifying the issue as CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Race condition in the ion_ioctl function in drivers/staging/android/ion/ion.c in the Linux kernel before 4.6 allows local users to gain privileges or cause a denial of service (use-after-free) by calling ION_IOC_FREE on two CPUs at the same time.

The bug was discovered 12/08/2016. The weakness was released 12/08/2016 as confirmed git commit (GIT Repository). The advisory is shared at git.kernel.org. This vulnerability is uniquely identified as CVE-2016-9120 since 10/30/2016. An attack has to be approached locally. Required for exploitation is a authentication. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 247451 (Linux Distros Unpatched Vulnerability : CVE-2016-9120), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 4.6 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at Tenable (247451) and SecurityFocus (BID 94669†). Entry connected to this vulnerability is available at VDB-93980. If you want to get the best quality for vulnerability data then you always have to consider 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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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 247451
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2016-9120

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 4.6
Patch: git.kernel.org

Timelineinfo

10/30/2016 🔍
12/06/2016 +37 days 🔍
12/08/2016 +2 days 🔍
12/08/2016 +0 days 🔍
12/08/2016 +0 days 🔍
12/09/2016 +1 days 🔍
08/10/2025 +3166 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: 9590232bb4f4cc824f3425a6e1349afbe6d6d2b7
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-9120 (🔍)
GCVE (CVE): GCVE-0-2016-9120
GCVE (VulDB): GCVE-100-93981
SecurityFocus: 94669 - Linux Kernel CVE-2016-9120 Local Use After Free Memory Corruption Vulnerability

See also: 🔍

Entryinfo

Created: 12/09/2016 07:49
Updated: 08/10/2025 21:46
Changes: 12/09/2016 07:49 (65), 08/24/2019 12:51 (5), 10/05/2022 08:37 (4), 08/10/2025 21:46 (16)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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