# lrzip 0.631-1+deb9u3build0.18.04.1: lrzip 0.631-1+deb9u3build0.18.04.1 for Ubuntu 18.04.6 LTS (bionic)

lrzip 0.631-1+deb9u3build0.18.04.1, released April 15, 2022, fixes 5 CVEs in lrzip. None of them is reported as exploited. Patch Radar priority: High. The product is no longer supported.

- Web page: https://patchblox.com/security/fix/linux/ubuntu-bionic-lrzip-0.631-1-deb9u3build0.18.04.1
- Platform: Linux
- Released: Apr 15, 2022
- Priority: High (Closes CVE-2022-28044, high severity)
- CVEs: 5, exploited: 0, on CISA KEV: 0

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [lrzip](https://patchblox.com/security/data/product/linux/lrzip.md) | Ubuntu 18.04.6 LTS (bionic) | 0.631-1+deb9u3build0.18.04.1 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2022-28044](https://patchblox.com/security/data/cve/CVE-2022-28044.md) | High | lrzip: Irzip v0.640 was discovered to contain a heap memory corruption via the component lrzip.c:initialise_control. | 9.8 | 0.0193 |  |
| [CVE-2020-25467](https://patchblox.com/security/data/cve/CVE-2020-25467.md) | Routine | lrzip: A null pointer dereference was discovered lzo_decompress_buf in stream.c in Irzip 0.621 which allows an attacker to c... | n/a | 0.0096 |  |
| [CVE-2022-26291](https://patchblox.com/security/data/cve/CVE-2022-26291.md) | Routine | lrzip: lrzip v0.641 was discovered to contain a multiple concurrency use-after-free between the functions zpaq_decompress_bu... | 5.5 | 0.0087 |  |
| [CVE-2021-27345](https://patchblox.com/security/data/cve/CVE-2021-27345.md) | Routine | lrzip: A null pointer dereference was discovered in ucompthread in stream.c in Irzip 0.631 which allows attackers to cause a... | n/a | 0.0072 |  |
| [CVE-2021-27347](https://patchblox.com/security/data/cve/CVE-2021-27347.md) | Routine | lrzip: Use after free in lzma_decompress_buf function in stream.c in Irzip 0.631 allows attackers to cause Denial of Service... | n/a | 0.0072 |  |

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Data as of 2026-11-13T01:58:51Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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