Linux Kernel EXT4 File System ext4_fill_super null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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4.9$0-$5k0.00

Summaryinfo

A vulnerability was found in Linux Kernel. It has been rated as problematic. Affected is the function ext4_fill_super of the component EXT4 File System. The manipulation leads to null pointer dereference. This vulnerability is documented as CVE-2015-8324. The attack needs to be performed locally. There is not any exploit available. To fix this issue, it is recommended to deploy a patch.

Detailsinfo

A vulnerability was found in Linux Kernel (Operating System) (version unknown) and classified as problematic. This issue affects the function ext4_fill_super of the component EXT4 File System. The manipulation with an unknown input leads to a null pointer dereference vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability.

The weakness was released 11/24/2015 as Bug 1267261 as confirmed bug report (Bugzilla). It is possible to read the advisory at bugzilla.redhat.com. The identification of this vulnerability is CVE-2015-8324 since 11/23/2015. The exploitation is known to be easy. Attacking locally is a requirement. No form of authentication is needed for a successful exploitation. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 87265 (Debian DLA-360-1 : linux-2.6 security update), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 256020 (CentOS Security Update for kernel (CESA-2016:0855)).

Applying a patch is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. A possible mitigation has been published 2 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (108303) and Tenable (87265). Entries connected to this vulnerability are available at VDB-68573, VDB-76938, VDB-78541 and VDB-79924. 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: 5.2
VulDB Meta Temp Score: 4.9

VulDB Base Score: 5.8
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 4.6
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: Yes
Local: Yes
Remote: No

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 87265
Nessus Name: Debian DLA-360-1 : linux-2.6 security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 865263
OpenVAS Name: RedHat Update for kernel RHSA-2016:0855-01
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

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

Patch: git.kernel.org

Timelineinfo

11/23/2015 🔍
11/24/2015 +1 days 🔍
11/26/2015 +2 days 🔍
12/08/2015 +12 days 🔍
12/09/2015 +1 days 🔍
05/02/2016 +145 days 🔍
06/28/2022 +2248 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: Bug 1267261
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2015-8324 (🔍)
GCVE (CVE): GCVE-0-2015-8324
GCVE (VulDB): GCVE-100-79331
X-Force: 108303 - Linux Kernel ext4_fill_super() denial of service

See also: 🔍

Entryinfo

Created: 11/26/2015 11:44
Updated: 06/28/2022 06:41
Changes: 11/26/2015 11:44 (55), 04/18/2018 13:49 (17), 06/28/2022 06:31 (2), 06/28/2022 06:41 (11)
Complete: 🔍
Cache ID: 216:1B6:103

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