What’s Vulnerable › Vulnerabilities

CVE-2025-15570: ckolivas lrzip stream.c lzma_decompress_buf use after free

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-02-10 · updated 2026-06-17
• Weakness: CWE-119

Description

A vulnerability was found in ckolivas lrzip up to 0.651. This impacts the function lzma_decompress_buf of the file stream.c. Performing a manipulation results in use after free. Attacking locally is a requirement. The exploit has been made public and could be used. The project was informed of the problem early through an issue report but has not responded yet.

Affected products

• ckolivas lrzip: through 0.651

References

• https://github.com/ckolivas/lrzip/
• https://github.com/ckolivas/lrzip/issues/262
• https://github.com/user-attachments/files/21709004/PoC_UAF.zip
• https://vuldb.com/?ctiid.344926
• https://vuldb.com/?id.344926
• https://vuldb.com/?submit.752595
• https://lists.debian.org/debian-lts-announce/2026/05/msg00011.html

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