Linux Kernel up to 6.1 mm/memory-tiers.c memory_tier_init alloc_memory_type return value

CVSS Meta Temp Score
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CTI Interest Score
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5.4$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in Linux Kernel up to 6.1. Affected by this vulnerability is the function memory_tier_init of the file mm/memory-tiers.c. Performing a manipulation of the argument alloc_memory_type results in return value. This vulnerability was named CVE-2023-23005. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Linux Kernel up to 6.1 (Operating System). This affects the function memory_tier_init of the file mm/memory-tiers.c. The manipulation of the argument alloc_memory_type with an unknown input leads to a return value vulnerability. CWE is classifying the issue as CWE-252. The product does not check the return value from a method or function, which can prevent it from detecting unexpected states and conditions. The impact remains unknown. The summary by CVE is:

In the Linux kernel before 6.2, mm/memory-tiers.c misinterprets the alloc_memory_type return value (expects it to be NULL in the error case, whereas it is actually an error pointer).

The weakness was presented 03/01/2023 as 4a625ceee8a0ab0273534cb6b432ce6b331db5ee. It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2023-23005 since 01/11/2023. Technical details of the vulnerability are known, but there is no available exploit.

Upgrading to version 6.2 eliminates this vulnerability. The upgrade is hosted for download at cdn.kernel.org. Applying the patch 4a625ceee8a0ab0273534cb6b432ce6b331db5ee is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2023-27105). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.4

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: Return value
CWE: CWE-252 / CWE-253
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 6.2
Patch: 4a625ceee8a0ab0273534cb6b432ce6b331db5ee

Timelineinfo

01/11/2023 🔍
03/01/2023 +49 days 🔍
03/01/2023 +0 days 🔍
10/06/2025 +950 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: 4a625ceee8a0ab0273534cb6b432ce6b331db5ee
Status: Confirmed

CVE: CVE-2023-23005 (🔍)
GCVE (CVE): GCVE-0-2023-23005
GCVE (VulDB): GCVE-100-222123
EUVD: 🔍

Entryinfo

Created: 03/01/2023 21:55
Updated: 10/06/2025 05:36
Changes: 03/01/2023 21:55 (46), 03/30/2023 09:04 (10), 10/06/2025 05:36 (16)
Complete: 🔍
Cache ID: 216::103

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

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