Linux Kernel up to 5.15.8 net/phonet/pep.c pep_sock_accept memory leak

CVSS Meta Temp Score
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CTI Interest Score
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3.4$0-$5k0.00

Summaryinfo

A vulnerability identified as problematic has been detected in Linux Kernel up to 5.15.8. This vulnerability affects the function pep_sock_accept of the file net/phonet/pep.c. This manipulation causes memory leak. This vulnerability appears as CVE-2021-45095. There is no available exploit. To fix this issue, it is recommended to deploy a patch.

Detailsinfo

A vulnerability was found in Linux Kernel up to 5.15.8 (Operating System). It has been declared as problematic. Affected by this vulnerability is the function pep_sock_accept of the file net/phonet/pep.c. The manipulation with an unknown input leads to a memory leak vulnerability. The CWE definition for the vulnerability is CWE-401. The product does not sufficiently track and release allocated memory after it has been used, which slowly consumes remaining memory. As an impact it is known to affect availability.

The weakness was presented 12/16/2021 as bcd0f93353326954817a4f9fa55ec57fb38acbb0. It is possible to read the advisory at git.kernel.org. This vulnerability is known as CVE-2021-45095 since 12/16/2021. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 236670 (Alibaba Cloud Linux 3 : 0125: cloud-kernel bugfix, enhancement and (ALINUX3-SA-2022:0125)), which helps to determine the existence of the flaw in a target environment.

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

The vulnerability is also documented in the vulnerability database at Tenable (236670). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.5
VulDB Meta Temp Score: 3.4

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Memory leak
CWE: CWE-401 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 236670
Nessus Name: Alibaba Cloud Linux 3 : 0125: cloud-kernel bugfix, enhancement and (ALINUX3-SA-2022:0125)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: git.kernel.org

Timelineinfo

12/16/2021 🔍
12/16/2021 +0 days 🔍
12/16/2021 +0 days 🔍
05/18/2025 +1249 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: bcd0f93353326954817a4f9fa55ec57fb38acbb0
Status: Confirmed

CVE: CVE-2021-45095 (🔍)
GCVE (CVE): GCVE-0-2021-45095
GCVE (VulDB): GCVE-100-188323

Entryinfo

Created: 12/16/2021 07:30
Updated: 05/18/2025 18:27
Changes: 12/16/2021 07:30 (42), 12/18/2021 09:59 (1), 05/18/2025 18:27 (16)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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