Valkey up to 8.1.1 networking.c setDeferredReply integer underflow

CVSS Meta Temp Score
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CTI Interest Score
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3.0$0-$5k0.00

Summaryinfo

A vulnerability labeled as problematic has been found in Valkey up to 8.1.1. This affects the function setDeferredReply of the file networking.c. Such manipulation leads to integer underflow. This vulnerability is documented as CVE-2025-49112. The attack requires being on the local network. There is not any exploit available. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability was found in Valkey up to 8.1.1. It has been rated as problematic. Affected by this issue is the function setDeferredReply of the file networking.c. The manipulation with an unknown input leads to a integer underflow vulnerability. Using CWE to declare the problem leads to CWE-191. The product subtracts one value from another, such that the result is less than the minimum allowable integer value, which produces a value that is not equal to the correct result. Impacted is availability. CVE summarizes:

setDeferredReply in networking.c in Valkey through 8.1.1 has an integer underflow for prev->size - prev->used.

The advisory is shared for download at github.com. This vulnerability is handled as CVE-2025-49112 since 06/02/2025. The exploitation is known to be difficult. The attack needs to be done within the local network. No form of authentication is required for exploitation. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 238417 (Fedora 41 : valkey (2025-a89cb837a1)), which helps to determine the existence of the flaw in a target environment.

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

The vulnerability is also documented in the vulnerability database at Tenable (238417). Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.1
VulDB Meta Temp Score: 3.0

VulDB Base Score: 3.1
VulDB Temp Score: 3.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 3.1
CNA Vector (MITRE): 🔍

CVSSv2info

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

Exploitinginfo

Class: Integer underflow
CWE: CWE-191 / CWE-189
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 238417
Nessus Name: Fedora 41 : valkey (2025-a89cb837a1)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: github.com

Timelineinfo

06/02/2025 🔍
06/02/2025 +0 days 🔍
06/02/2025 +0 days 🔍
06/13/2025 +11 days 🔍

Sourcesinfo

Advisory: github.com
Status: Confirmed

CVE: CVE-2025-49112 (🔍)
GCVE (CVE): GCVE-0-2025-49112
GCVE (VulDB): GCVE-100-310796

Entryinfo

Created: 06/02/2025 08:22
Updated: 06/13/2025 11:51
Changes: 06/02/2025 08:22 (63), 06/13/2025 11:51 (2)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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