Linux Kernel up to 5.12.4 NFS Subsystem decode_nfs_fh memory corruption

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.3$0-$5k0.00

Summaryinfo

A vulnerability classified as critical has been found in Linux Kernel up to 5.12.4. Affected by this vulnerability is the function decode_nfs_fh of the component NFS Subsystem. Performing a manipulation results in memory corruption. This vulnerability is cataloged as CVE-2021-4157. It is possible to initiate the attack remotely. There is no exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, was found in Linux Kernel up to 5.12.4 (Operating System). This affects the function decode_nfs_fh of the component NFS Subsystem. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was shared 03/26/2022. The advisory is shared at bugzilla.redhat.com. This vulnerability is uniquely identified as CVE-2021-4157 since 12/22/2021. Technical details are known, but no exploit is available.

Upgrading to version 5.12.5 or 5.13-rc1 eliminates this vulnerability.

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Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.6
VulDB Meta Temp Score: 7.3

VulDB Base Score: 7.6
VulDB Temp Score: 7.3
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: Memory corruption
CWE: CWE-119
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 5.12.5/5.13-rc1

Timelineinfo

12/22/2021 🔍
03/26/2022 +94 days 🔍
03/26/2022 +0 days 🔍
03/27/2022 +1 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: bugzilla.redhat.com
Status: Confirmed

CVE: CVE-2021-4157 (🔍)
GCVE (CVE): GCVE-0-2021-4157
GCVE (VulDB): GCVE-100-195789

Entryinfo

Created: 03/26/2022 07:27
Updated: 03/27/2022 11:30
Changes: 03/26/2022 07:27 (41), 03/27/2022 11:30 (1)
Complete: 🔍
Cache ID: 216::103

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