CVE-2022-26291

Name: CVE-2022-26291
Creator: NVD / NIST
Published: 2022-03-28T22:15:09.68+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 0.85%

Last modified Jun 17, 2026

CVE-2022-26291 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. lrzip v0.641 was discovered to contain a multiple concurrency use-after-free between the functions zpaq_decompress_buf() and clear_rulist(). This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted Irz file.. EPSS estimates a 0.85% chance of exploitation in the next 30 days.

Description

lrzip v0.641 was discovered to contain a multiple concurrency use-after-free between the functions zpaq_decompress_buf() and clear_rulist(). This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted Irz file.

Metrics

CVSS 3.1

5.5/10

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

EPSS Probability

0.85%

53.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-416

Affected Software

Vendor	Product	Versions
Long Range Zip Project	Long Range Zip	0.641
Debian	Debian Linux	9.0
Debian	Debian Linux	10.0
Debian	Debian Linux	11.0

References

https://github.com/ckolivas/lrzip/issues/206Exploit, Issue Tracking, Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/04/msg00012.htmlMailing List, Third Party Advisory
https://www.debian.org/security/2022/dsa-5145Third Party Advisory
https://github.com/ckolivas/lrzip/issues/206Exploit, Issue Tracking, Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/04/msg00012.htmlMailing List, Third Party Advisory
https://www.debian.org/security/2022/dsa-5145Third Party Advisory

Timeline

Published: Mar 28, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-26291?

How severe is CVE-2022-26291?

CVE-2022-26291 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.85% probability of exploitation in the next 30 days.

How do I fix CVE-2022-26291?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-26291?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST