Linux Kernel up to 6.0.7 unregister_region 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 marked as critical has been reported in Linux Kernel up to 6.0.7. Impacted is the function unregister_region. Performing a manipulation results in memory leak. This vulnerability is cataloged as CVE-2022-49893. There is no exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.0.7. It has been classified as critical. This affects the function unregister_region. 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: cxl/region: Fix cxl_region leak, cleanup targets at region delete When a region is deleted any targets that have been previously assigned to that region hold references to it. Trigger those references to drop by detaching all targets at unregister_region() time. Otherwise that region object will leak as userspace has lost the ability to detach targets once region sysfs is torn down.

It is possible to read the advisory at git.kernel.org. This vulnerability is uniquely identified as CVE-2022-49893 since 05/01/2025. Technical details of the vulnerability are known, but there is no available exploit.

Upgrading to version 6.0.8 eliminates this vulnerability. Applying the patch 45d9fb4b758b9d602ee7776eb6754b0349946aad/0d9e734018d70cecf79e2e4c6082167160a0f13f 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.

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

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 6.0.8
Patch: 45d9fb4b758b9d602ee7776eb6754b0349946aad/0d9e734018d70cecf79e2e4c6082167160a0f13f

Timelineinfo

05/01/2025 🔍
05/01/2025 +0 days 🔍
05/01/2025 +0 days 🔍
11/11/2025 +193 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2022-49893 (🔍)
GCVE (CVE): GCVE-0-2022-49893
GCVE (VulDB): GCVE-100-307059

Entryinfo

Created: 05/01/2025 19:04
Updated: 11/11/2025 00:04
Changes: 05/01/2025 19:04 (58), 11/11/2025 00:04 (11)
Complete: 🔍
Cache ID: 216::103

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