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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.

PUBLISHED Reserved 2026-02-08 | Published 2026-02-10 | Updated 2026-02-23 | Assigner VulDB




MEDIUM: 4.8CVSS: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
LOW: 3.3CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R
LOW: 3.3CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R
1.7AV:L/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:ND/RC:UR

Problem types

NULL Pointer Dereference

Denial of Service

Product status

0.651
affected

Timeline

2026-02-08:Advisory disclosed
2026-02-08:VulDB entry created
2026-02-11:VulDB entry last update

Credits

ziiiro (VulDB User) reporter

References

vuldb.com/?id.344931 (VDB-344931 | ckolivas lrzip stream.c ucompthread null pointer dereference) vdb-entry technical-description

vuldb.com/?ctiid.344931 (VDB-344931 | CTI Indicators (IOB, IOC, IOA)) signature permissions-required

vuldb.com/?submit.752603 (Submit #752603 | ckolivas lrzip 0.651 NULL Pointer Dereference) third-party-advisory

github.com/ckolivas/lrzip/issues/263 issue-tracking

github.com/user-attachments/files/21726331/PoC_NPD.zip exploit

github.com/ckolivas/lrzip/ product

cve.org (CVE-2025-15571)

nvd.nist.gov (CVE-2025-15571)

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