VDB-255698 · CVE-2021-47096 · ID 178

Linux Kernel up to 5.15.11 rawmidi uninitialized pointer

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4.7	$0-$5k	0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in Linux Kernel up to 5.15.11. This vulnerability affects unknown code of the component rawmidi. Such manipulation leads to uninitialized pointer. This vulnerability is listed as CVE-2021-47096. There is no available exploit. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 5.15.11 (Operating System). It has been rated as problematic. Affected by this issue is some unknown functionality of the component rawmidi. The manipulation with an unknown input leads to a uninitialized pointer vulnerability. Using CWE to declare the problem leads to CWE-824. The product accesses or uses a pointer that has not been initialized. The impact remains unknown. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: ALSA: rawmidi - fix the uninitalized user_pversion The user_pversion was uninitialized for the user space file structure in the open function, because the file private structure use kmalloc for the allocation. The kernel ALSA sequencer code clears the file structure, so no additional fixes are required. BugLink: https://github.com/alsa-project/alsa-lib/issues/178

The weakness was presented 03/04/2024 as 178. The advisory is available at git.kernel.org. This vulnerability is handled as CVE-2021-47096 since 02/29/2024. The technical details are unknown and an exploit is not available.

Upgrading to version 5.15.12 or 5.16 eliminates this vulnerability. Applying the patch b398fcbe4de1/39a8fc4971a0 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.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Operating System

Vendor

Linux

Name

Kernel

Version

License

open-source

Website

Vendor: https://www.kernel.org/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.8
VulDB Meta Temp Score: 4.7

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 4.0
CNA Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: Uninitialized pointer
CWE: CWE-824 / CWE-908
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 5.15.12/5.16
Patch: b398fcbe4de1/39a8fc4971a0

Timelineinfo

02/29/2024 🔍
03/04/2024 +4 days 🔍
03/04/2024 +0 days 🔍
11/05/2024 +246 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: 178
Status: Confirmed

CVE: CVE-2021-47096 (🔍)
GCVE (CVE): GCVE-0-2021-47096
GCVE (VulDB): GCVE-100-255698

Entryinfo

Created: 03/04/2024 19:46
Updated: 11/05/2024 21:30
Changes: 03/04/2024 19:46 (43), 11/05/2024 21:30 (26)
Complete: 🔍
Cache ID: 216::103