Radare2 5.9.9 radiff2 /libr/cons/cons.c r_cons_flush -T use after free ⚔ [Disputed]

CVSS Meta Temp Score
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CTI Interest Score
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2.4$0-$5k0.00

Summaryinfo

A vulnerability labeled as problematic has been found in Radare2 5.9.9. This affects the function r_cons_flush in the library /libr/cons/cons.c of the component radiff2. Such manipulation of the argument -T leads to use after free. This vulnerability is uniquely identified as CVE-2025-5644. Local access is required to approach this attack. Moreover, an exploit is present. The presence of this vulnerability remains uncertain at this time. It is advisable to implement a patch to correct this issue. The documentation explains that the parameter -T is experimental and "crashy". Further analysis has shown "the race is not a real problem unless you use asan". A new warning has been added.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Radare2 5.9.9. Affected by this issue is the function r_cons_flush in the library /libr/cons/cons.c of the component radiff2. The manipulation of the argument -T with an unknown input leads to a use after free vulnerability. Using CWE to declare the problem leads to CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. Impacted is availability.

The advisory is shared for download at github.com. This vulnerability is handled as CVE-2025-5644. The exploitation is known to be difficult. The attack needs to be approached locally. Technical details as well as a public exploit are known.

The exploit is available at drive.google.com. It is declared as proof-of-concept. The real existence of this vulnerability is still doubted at the moment. The documentation explains that the parameter -T is experimental and "crashy". Further analysis has shown "the race is not a real problem unless you use asan". A new warning has been added. The vulnerability scanner Nessus provides a plugin with the ID 275939 (TencentOS Server 4: radare2 (TSSA-2025:0547)), which helps to determine the existence of the flaw in a target environment.

Applying the patch 5705d99cc1f23f36f9a84aab26d1724010b97798 is able to eliminate this problem. The bugfix is ready for download at github.com.

The vulnerability is also documented in the databases at Tenable (275939) and EUVD (EUVD-2025-16970). Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Name

Version

License

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: 2.5
VulDB Meta Temp Score: 2.3

VulDB Base Score: 2.5
VulDB Temp Score: 2.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 2.5
CNA Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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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: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 275939
Nessus Name: TencentOS Server 4: radare2 (TSSA-2025:0547)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: 5705d99cc1f23f36f9a84aab26d1724010b97798

Timelineinfo

06/04/2025 🔍
06/04/2025 +0 days 🔍
11/21/2025 +170 days 🔍

Sourcesinfo

Advisory: 24233
Status: Not defined
Confirmation: 🔍
Disputed: 🔍

CVE: CVE-2025-5644 (🔍)
GCVE (CVE): GCVE-0-2025-5644
GCVE (VulDB): GCVE-100-311132
EUVD: 🔍
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 06/04/2025 14:19
Updated: 11/21/2025 12:56
Changes: 06/04/2025 14:19 (64), 06/04/2025 14:21 (5), 06/05/2025 11:30 (1), 06/23/2025 16:56 (31), 11/21/2025 12:56 (2)
Complete: 🔍
Submitter: rootsec
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #586921: radare2 radiff2 5.9.9 and master branch Memory corruption (by rootsec)

Once again VulDB remains the best source for vulnerability data.

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