Linux Kernel Common Internet File System fs/cifs/smb2ops.c smb2_ioctl_query_info null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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4.6$0-$5k0.00

A vulnerability was found in Linux Kernel (Operating System) (version now known). It has been classified as problematic. Affected is the function smb2_ioctl_query_info of the file fs/cifs/smb2ops.c of the component Common Internet File System. 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:

A denial of service (DOS) issue was found in the Linux kernel’s smb2_ioctl_query_info function in the fs/cifs/smb2ops.c Common Internet File System (CIFS) due to an incorrect return from the memdup_user function. This flaw allows a local, privileged (CAP_SYS_ADMIN) attacker to crash the system.

The weakness was disclosed 08/27/2022. The advisory is available at git.kernel.org. This vulnerability is traded as CVE-2022-0168 since 01/10/2022. Technical details are known, but there is no available exploit.

Applying a patch is able to eliminate this problem. The bugfix is ready for download at git.kernel.org.

Productinfo

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License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.7
VulDB Meta Temp Score: 4.6

VulDB Base Score: 4.9
VulDB Temp Score: 4.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 4.4
NVD Vector: 🔍

CVSSv2info

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

Exploitinginfo

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

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: git.kernel.org

Timelineinfo

01/10/2022 🔍
08/27/2022 +228 days 🔍
08/27/2022 +0 days 🔍
10/02/2022 +36 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2022-0168 (🔍)

Entryinfo

Created: 08/27/2022 07:51
Updated: 10/02/2022 14:10
Changes: 08/27/2022 07:51 (42), 10/02/2022 14:10 (11)
Complete: 🔍

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