Linux Kernel up to 5.15.7 felix_setup_mmio_filtering memory leak

CVSS Meta Temp Score
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CTI Interest Score
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5.5$0-$5k0.00

Summaryinfo

A vulnerability was found in Linux Kernel up to 5.15.7. It has been rated as critical. This affects the function felix_setup_mmio_filtering. Performing a manipulation results in memory leak. This vulnerability is known as CVE-2021-47513. No exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability classified as critical has been found in Linux Kernel up to 5.15.7. This affects the function felix_setup_mmio_filtering. The manipulation with an unknown input leads to a memory leak vulnerability. CWE is classifying the issue as CWE-401. The product does not sufficiently track and release allocated memory after it has been used, which slowly consumes remaining memory. This is going to have an impact on availability. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: net: dsa: felix: Fix memory leak in felix_setup_mmio_filtering Avoid a memory leak if there is not a CPU port defined. Addresses-Coverity-ID: 1492897 ("Resource leak") Addresses-Coverity-ID: 1492899 ("Resource leak")

It is possible to read the advisory at git.kernel.org. This vulnerability is uniquely identified as CVE-2021-47513. Technical details of the vulnerability are known, but there is no available exploit.

Upgrading to version 5.15.8 eliminates this vulnerability. Applying the patch 973a0373e88c/e8b1d7698038 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.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.7
VulDB Meta Temp Score: 5.5

VulDB Base Score: 5.7
VulDB Temp Score: 5.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 5.15.8
Patch: 973a0373e88c/e8b1d7698038

Timelineinfo

05/24/2024 🔍
05/24/2024 +0 days 🔍
05/24/2024 +0 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2021-47513 (🔍)
GCVE (CVE): GCVE-0-2021-47513
GCVE (VulDB): GCVE-100-266175

Entryinfo

Created: 05/24/2024 17:38
Changes: 05/24/2024 17:38 (56)
Complete: 🔍
Cache ID: 216::103

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