Linux Kernel up to 6.2-rc4 NFS Filesystem fs/nfsd/nfs4proc.c nfsd4_ssc_setup_dul use after free

CVSS Meta Temp Score
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CTI Interest Score
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6.1$0-$5k0.00

Summaryinfo

A vulnerability was found in Linux Kernel up to 6.2-rc4. It has been classified as problematic. This issue affects the function nfsd4_ssc_setup_dul of the file fs/nfsd/nfs4proc.c of the component NFS Filesystem. Performing a manipulation results in use after free. This vulnerability is identified as CVE-2023-1652. The attack is only possible with local access. There is not any exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Linux Kernel up to 6.2-rc4 (Operating System). This affects the function nfsd4_ssc_setup_dul of the file fs/nfsd/nfs4proc.c of the component NFS Filesystem. The manipulation with an unknown input leads to a use after free vulnerability. CWE is classifying the issue as CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

A use-after-free flaw was found in nfsd4_ssc_setup_dul in fs/nfsd/nfs4proc.c in the NFS filesystem in the Linux Kernel. This issue could allow a local attacker to crash the system or it may lead to a kernel information leak problem.

The weakness was released 03/30/2023 as 2182031. The advisory is shared at access.redhat.com. This vulnerability is uniquely identified as CVE-2023-1652 since 03/27/2023. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 241147 (RHEL 9 : kernel (RHSA-2025:10174)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.2-rc5 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.

The vulnerability is also documented in the databases at Tenable (241147) and EUVD (EUVD-2023-23881). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.2
VulDB Meta Temp Score: 6.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.1
NVD Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 241147
Nessus Name: RHEL 9 : kernel (RHSA-2025:10174)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 6.2-rc5
Patch: git.kernel.org

Timelineinfo

03/27/2023 🔍
03/30/2023 +3 days 🔍
03/30/2023 +0 days 🔍
08/11/2025 +865 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: 2182031
Status: Confirmed

CVE: CVE-2023-1652 (🔍)
GCVE (CVE): GCVE-0-2023-1652
GCVE (VulDB): GCVE-100-224481
EUVD: 🔍

Entryinfo

Created: 03/30/2023 08:47
Updated: 08/11/2025 08:35
Changes: 03/30/2023 08:47 (45), 04/20/2023 07:13 (11), 07/02/2025 14:08 (17), 08/11/2025 08:35 (1)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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