Linux Kernel up to 5.12.12 nf_tables_api.c nf_tables_newset null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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4.1$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in Linux Kernel up to 5.12.12. The impacted element is the function nf_tables_newset of the file net/netfilter/nf_tables_api.c. The manipulation results in null pointer dereference. This vulnerability is cataloged as CVE-2021-46283. The attack may be launched remotely. There is no exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Linux Kernel up to 5.12.12 (Operating System). Affected is the function nf_tables_newset of the file net/netfilter/nf_tables_api.c. 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.

The weakness was shared 01/12/2022. The advisory is shared for download at git.kernel.org. This vulnerability is traded as CVE-2021-46283 since 01/11/2022. There are known technical details, but no exploit is available.

Upgrading to version 5.12.13 eliminates this vulnerability. The upgrade is hosted for download at cdn.kernel.org. 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.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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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: 🔍

Physical: No
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 5.12.13
Patch: git.kernel.org

Timelineinfo

01/11/2022 🔍
01/12/2022 +1 days 🔍
01/12/2022 +0 days 🔍
01/15/2022 +3 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2021-46283 (🔍)
GCVE (CVE): GCVE-0-2021-46283
GCVE (VulDB): GCVE-100-190164

Entryinfo

Created: 01/12/2022 07:00
Updated: 01/15/2022 07:49
Changes: 01/12/2022 07:00 (43), 01/15/2022 07:49 (1)
Complete: 🔍
Cache ID: 216::103

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