CVE-2025-15571
ckolivas lrzip stream.c ucompthread null pointer dereference
- State
- Published
- Severity
- 4.8 Medium
- Published
- Feb 10, 2026
- Updated
- Feb 23, 2026
- Reserved
- Feb 8, 2026
Description
A security vulnerability has been detected in ckolivas lrzip up to 0.651. This vulnerability affects the function ucompthread of the file stream.c. Such manipulation leads to null pointer dereference. The attack can only be performed from a local environment. The exploit has been disclosed publicly and may be used. The project was informed of the problem early through an issue report but has not responded yet.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 4.8 Medium | CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P | VulDB |
| 3.1 | 3.3 Low | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R | VulDB |
| 3.0 | 3.3 Low | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R | VulDB |
| 2.0 | 1.7 Low | AV:L/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:ND/RC:UR | VulDB |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
lrzipckolivas |
|
References
- VDB-344931 | ckolivas lrzip stream.c ucompthread null pointer dereferencevdb-entrytechnical-description
- VDB-344931 | CTI Indicators (IOB, IOC, IOA)signaturepermissions-required
- Submit #752603 | ckolivas lrzip 0.651 NULL Pointer Dereferencethird-party-advisory
- https://github.com/ckolivas/lrzip/issues/263issue-tracking
- https://github.com/user-attachments/files/21726331/PoC_NPD.zipexploit
- https://github.com/ckolivas/lrzip/product
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