Linux Kernel up to 5.15.5 ksmbd get_file_stream_info 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 classified as critical has been found in Linux Kernel up to 5.15.5. Affected by this issue is the function get_file_stream_info of the component ksmbd. Performing a manipulation results in memory leak. This vulnerability was named CVE-2021-47568. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, was found in Linux Kernel up to 5.15.5. This affects the function get_file_stream_info of the component ksmbd. 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: ksmbd: fix memleak in get_file_stream_info() Fix memleak in get_file_stream_info()

It is possible to read the advisory at git.kernel.org. This vulnerability is uniquely identified as CVE-2021-47568. Technical details of the vulnerability are known, but there is no available exploit.

Upgrading to version 5.15.6 eliminates this vulnerability. Applying the patch 11e659827c3a/178ca6f85aa3 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.

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Productinfo

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Vendor

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Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.6
VulDB Meta Temp Score: 5.5

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

NVD Base Score: 5.5
NVD Vector: 🔍

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: Partially
Local: Yes
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 5.15.6
Patch: 11e659827c3a/178ca6f85aa3

Timelineinfo

05/24/2024 🔍
05/24/2024 +0 days 🔍
01/07/2025 +228 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2021-47568 (🔍)
GCVE (CVE): GCVE-0-2021-47568
GCVE (VulDB): GCVE-100-266223

Entryinfo

Created: 05/24/2024 18:45
Updated: 01/07/2025 04:30
Changes: 05/24/2024 18:45 (57), 01/07/2025 04:30 (12)
Complete: 🔍
Cache ID: 216::103

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