VDB-223755 · CVE-2023-1249 · EUVD-2023-23518

Linux Kernel Core Dump Subsystem fill_files_note use after free

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.4	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Linux Kernel. It has been rated as problematic. This issue affects the function fill_files_note of the component Core Dump Subsystem. Performing a manipulation results in use after free. This vulnerability is known as CVE-2023-1249. Attacking locally is a requirement. No exploit is available. To fix this issue, it is recommended to deploy a patch.

Detailsinfo

A vulnerability was found in Linux Kernel (Operating System) (version unknown). It has been classified as problematic. This affects the function fill_files_note of the component Core Dump Subsystem. 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 availability. The summary by CVE is:

A use-after-free flaw was found in the Linux kernel’s core dump subsystem. This flaw allows a local user to crash the system. Only if patch 390031c94211 ("coredump: Use the vma snapshot in fill_files_note") not applied yet, then kernel could be affected.

The weakness was published 03/24/2023. It is possible to read the advisory at patchwork.kernel.org. This vulnerability is uniquely identified as CVE-2023-1249 since 03/07/2023. Technical details of the vulnerability are known, but there is no available exploit.

Applying the patch 390031c94211 is able to eliminate this problem.

The vulnerability is also documented in the databases at EUVD (EUVD-2023-23518) and CERT Bund (WID-SEC-2025-1293). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Affected

Ubuntu Linux
IBM DataPower Gateway

Productinfo

Type

Operating System

Vendor

Linux

Name

Kernel

License

open-source

Website

Vendor: https://www.kernel.org/

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

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: 390031c94211

Timelineinfo

03/07/2023 🔍
03/24/2023 +17 days 🔍
03/24/2023 +0 days 🔍
12/04/2025 +986 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: patchwork.kernel.org
Status: Confirmed

CVE: CVE-2023-1249 (🔍)
GCVE (CVE): GCVE-0-2023-1249
GCVE (VulDB): GCVE-100-223755
EUVD: 🔍
CERT Bund: WID-SEC-2025-1293 - IBM DataPower Gateway: Mehrere Schwachstellen

Entryinfo

Created: 03/24/2023 06:49
Updated: 12/04/2025 15:44
Changes: 03/24/2023 06:49 (40), 04/13/2023 20:47 (10), 08/11/2025 06:14 (16), 12/04/2025 15:44 (7)
Complete: 🔍
Cache ID: 216::103

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