Linux Kernel up to 5.16 KVM null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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6.2$0-$5k0.00

A vulnerability has been found in Linux Kernel up to 5.16 (Operating System) and classified as critical. This vulnerability affects some unknown processing of the component KVM. The manipulation with an unknown input leads to a null pointer dereference vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect availability.

The weakness was shared 03/10/2022. The advisory is available at bugzilla.redhat.com. This vulnerability was named CVE-2021-4095 since 12/10/2021. The technical details are unknown and an exploit is not available.

Upgrading to version 5.17-rc1 eliminates this vulnerability.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

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

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.2

VulDB Base Score: 6.5
VulDB Temp Score: 6.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

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

Local: No
Remote: Yes

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 5.17-rc1

Timelineinfo

12/10/2021 🔍
03/10/2022 +90 days 🔍
03/10/2022 +0 days 🔍
03/12/2022 +2 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: bugzilla.redhat.com
Status: Confirmed

CVE: CVE-2021-4095 (🔍)

Entryinfo

Created: 03/10/2022 20:25
Updated: 03/12/2022 10:46
Changes: 03/10/2022 20:25 (40), 03/12/2022 10:40 (1), 03/12/2022 10:46 (1)
Complete: 🔍

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