mrubyc up to 3.4 src/alloc.c mrbc_raw_realloc ptr null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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4.0$0-$5k0.00

Summaryinfo

A vulnerability was found in mrubyc up to 3.4. It has been classified as problematic. Affected is the function mrbc_raw_realloc of the file src/alloc.c. Performing a manipulation of the argument ptr results in null pointer dereference. This vulnerability is known as CVE-2025-13397. Attacking locally is a requirement. No exploit is available. Applying a patch is the recommended action to fix this issue.

Detailsinfo

A vulnerability was found in mrubyc up to 3.4. It has been classified as problematic. This affects the function mrbc_raw_realloc of the file src/alloc.c. The manipulation of the argument ptr with an unknown input leads to a null pointer dereference vulnerability. CWE is classifying the issue as CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. This is going to have an impact on availability.

The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2025-13397. The exploitability is told to be easy. An attack has to be approached locally. Technical details are known, but no exploit is available.

Applying the patch 009111904807b8567262036bf45297c3da8f1c87 is able to eliminate this problem. The bugfix is ready for download at github.com.

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

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Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 4.0
VulDB Meta Temp Score: 4.0

VulDB Base Score: 3.3
VulDB Temp Score: 3.2
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔒

CNA Base Score: 3.3
CNA Vector: 🔒

CVSSv2info

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔒

Patch: 009111904807b8567262036bf45297c3da8f1c87

Timelineinfo

11/19/2025 Advisory disclosed
11/19/2025 +0 days VulDB entry created
12/01/2025 +12 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: 244
Status: Confirmed
Confirmation: 🔒

CVE: CVE-2025-13397 (🔒)
GCVE (CVE): GCVE-0-2025-13397
GCVE (VulDB): GCVE-100-332925

Entryinfo

Created: 11/19/2025 10:10
Updated: 12/01/2025 22:03
Changes: 11/19/2025 10:10 (57), 11/20/2025 12:49 (29), 12/01/2025 22:03 (11)
Complete: 🔍
Submitter: micromilo
Cache ID: 216::103

Submitinfo

Accepted

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