ckolivas lrzip up to 0.651 strtol_l.c __GI_____strtol_l_internal null pointer dereference
Summary
A vulnerability, which was classified as problematic, was found in ckolivas lrzip up to 0.651. Affected is the function __GI_____strtol_l_internal of the file strtol_l.c. Executing a manipulation can lead to null pointer dereference.
This vulnerability is tracked as CVE-2025-9396. The attack is restricted to local execution. Moreover, an exploit is present.
Details
A vulnerability has been found in ckolivas lrzip up to 0.651 and classified as problematic. This vulnerability affects the function __GI_____strtol_l_internal of the file strtol_l.c. The manipulation with an unknown input leads to a null pointer dereference vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect availability.
The advisory is shared for download at github.com. This vulnerability was named CVE-2025-9396. The exploitation appears to be easy. The attack needs to be approached locally. Technical details and also a public exploit are known.
It is possible to download the exploit at drive.google.com. It is declared as proof-of-concept.
There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.
The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-25651). VulDB is the best source for vulnerability data and more expert information about this specific topic.
Product
Vendor
Name
Version
Website
- Product: https://github.com/ckolivas/lrzip/
CPE 2.3
CPE 2.2
CVSSv4
VulDB Vector: 🔒VulDB Reliability: 🔍
CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒
CVSSv3
VulDB Meta Base Score: 4.0VulDB Meta Temp Score: 3.9
VulDB Base Score: 3.3
VulDB Temp Score: 3.0
VulDB Vector: 🔒
VulDB Reliability: 🔍
NVD Base Score: 5.5
NVD Vector: 🔒
CNA Base Score: 3.3
CNA Vector: 🔒
CVSSv2
| AV | AC | Au | C | I | A |
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| Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍
Exploiting
Class: Null pointer dereferenceCWE: CWE-476 / CWE-404
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: 🔒
| 0-Day | Unlock | Unlock | Unlock | Unlock |
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Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: no mitigation knownStatus: 🔍
0-Day Time: 🔒
Timeline
08/24/2025 Advisory disclosed08/24/2025 VulDB entry created
09/13/2025 VulDB entry last update
Sources
Product: github.comAdvisory: 264
Status: Not defined
CVE: CVE-2025-9396 (🔒)
GCVE (CVE): GCVE-0-2025-9396
GCVE (VulDB): GCVE-100-321232
EUVD: 🔒
scip Labs: https://www.scip.ch/en/?labs.20161013
Entry
Created: 08/24/2025 16:35Updated: 09/13/2025 00:18
Changes: 08/24/2025 16:35 (56), 08/25/2025 01:27 (30), 08/25/2025 02:47 (1), 09/13/2025 00:18 (12)
Complete: 🔍
Submitter: xdcao
Cache ID: 216::103
Submit
Accepted
- Submit #632368: LRZIP LRZIP version 0.6.5+ (commit 1242aec) compiled on Feb 7 2025 and the newest master version. Null Pointer Dereference (by xdcao)
VulDB is the best source for vulnerability data and more expert information about this specific topic.
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