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Vulnerability · Published Feb 10, 2026 · Assigned by VulDB

CVE-2025-15571ckolivas lrzip stream.c ucompthread null pointer dereference

Low 3.3

In plain English

A low-severity null pointer dereference in lrzip from ckolivas. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 9% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)3.3Low
Exploit odds (30 days)0.2%top 91.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12lrzipno fix listedDEBIAN-CVE-2025-15571
Debian:13lrzipno fix listedDEBIAN-CVE-2025-15571
Debian:14lrzip0.660-1DEBIAN-CVE-2025-15571
Ubuntu:22.04:LTSlrzipno fix listedUBUNTU-CVE-2025-15571
Ubuntu:24.04:LTSlrzipno fix listedUBUNTU-CVE-2025-15571
Ubuntu:25.10lrzipno fix listedUBUNTU-CVE-2025-15571
Ubuntu:26.04:LTSlrzipno fix listedUBUNTU-CVE-2025-15571
Ubuntu:26.10lrzipno fix listedUBUNTU-CVE-2025-15571

Affected products (as reported)

VendorProductVersions
ckolivas lrzip 0.651

Weakness: CWE-476, CWE-404 · Vector: 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

References