Linux Kernel up to 6.4.4 Ceph File System net/ceph/messenger_v2.c buffer overflow

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.4$0-$5k0.82

Summaryinfo

A vulnerability has been found in Linux Kernel up to 6.4.4 and classified as critical. This impacts an unknown function of the file net/ceph/messenger_v2.c of the component Ceph File System. The manipulation leads to buffer overflow. This vulnerability is uniquely identified as CVE-2023-44466. The attack is possible to be carried out remotely. No exploit exists. The affected component should be upgraded.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Linux Kernel up to 6.4.4 (Operating System). This issue affects an unknown part of the file net/ceph/messenger_v2.c of the component Ceph File System. The manipulation with an unknown input leads to a buffer overflow vulnerability. Using CWE to declare the problem leads to CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

An issue was discovered in net/ceph/messenger_v2.c in the Linux kernel before 6.4.5. There is an integer signedness error, leading to a buffer overflow and remote code execution via HELLO or one of the AUTH frames. This occurs because of an untrusted length taken from a TCP packet in ceph_decode_32.

The weakness was disclosed 09/29/2023 as GHSA-jg27-jx6w-xwph. It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2023-44466. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 05/24/2025).

Upgrading to version 6.4.5 eliminates this vulnerability. Applying a patch 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

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.6
VulDB Meta Temp Score: 7.4

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: Buffer overflow
CWE: CWE-120 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

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 6.4.5
Patch: git.kernel.org

Timelineinfo

09/29/2023 🔍
09/29/2023 +0 days 🔍
09/29/2023 +0 days 🔍
05/24/2025 +602 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: GHSA-jg27-jx6w-xwph
Status: Confirmed

CVE: CVE-2023-44466 (🔍)
GCVE (CVE): GCVE-0-2023-44466
GCVE (VulDB): GCVE-100-240887

Entryinfo

Created: 09/29/2023 08:40
Updated: 05/24/2025 00:44
Changes: 09/29/2023 08:40 (43), 10/22/2023 10:11 (1), 10/22/2023 10:17 (11), 05/24/2025 00:44 (16)
Complete: 🔍
Cache ID: 216::103

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