Linux Kernel 5.x EXT4 File System fs/ext4/xattr.c ext4_xattr_ibody_find use after free

CVSS Meta Temp Score
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CTI Interest Score
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6.0$0-$5k0.00

Summaryinfo

A vulnerability marked as problematic has been reported in Linux Kernel 5.x. This issue affects the function ext4_xattr_ibody_find of the file fs/ext4/xattr.c of the component EXT4 File System. This manipulation causes use after free. This vulnerability is handled as CVE-2023-2513. There is not any exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Linux Kernel 5.x (Operating System) and classified as problematic. Affected by this vulnerability is the function ext4_xattr_ibody_find of the file fs/ext4/xattr.c of the component EXT4 File System. The manipulation with an unknown input leads to a use after free vulnerability. The CWE definition for the vulnerability is CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. The impact remains unknown.

The weakness was released 05/04/2023. The advisory is shared at bugzilla.redhat.com. This vulnerability is known as CVE-2023-2513 since 05/04/2023. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 264498 (RHEL 8 : kernel (RHSA-2025:15649)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.0-rc1 eliminates this vulnerability. Applying a patch 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 databases at Tenable (264498) and EUVD (EUVD-2023-33995). 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: 6.1
VulDB Meta Temp Score: 6.0

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

NVD Base Score: 6.7
NVD Vector: 🔍

CVSSv2info

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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: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 264498
Nessus Name: RHEL 8 : kernel (RHSA-2025:15649)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 6.0-rc1
Patch: github.com

Timelineinfo

05/04/2023 🔍
05/04/2023 +0 days 🔍
05/04/2023 +0 days 🔍
12/18/2025 +959 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: bugzilla.redhat.com
Status: Confirmed

CVE: CVE-2023-2513 (🔍)
GCVE (CVE): GCVE-0-2023-2513
GCVE (VulDB): GCVE-100-228001
EUVD: 🔍

Entryinfo

Created: 05/04/2023 15:02
Updated: 12/18/2025 21:27
Changes: 05/04/2023 15:02 (42), 05/27/2023 14:42 (1), 05/27/2023 14:44 (11), 09/11/2025 17:53 (17), 12/18/2025 21:27 (1)
Complete: 🔍
Cache ID: 216::103

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

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