# libnetty-java 4.1.48-6: libnetty-java 4.1.48-6 for Ubuntu 25.04 (plucky)

libnetty-java 4.1.48-6, released January 16, 2026, fixes 5 CVEs in libnetty-java. 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-plucky-libnetty-java-4.1.48-6
- Platform: Linux
- Released: Jan 16, 2026
- Priority: High (Closes CVE-2022-41881, high severity)
- CVEs: 5, exploited: 0, on CISA KEV: 0

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [libnetty-java](https://patchblox.com/security/data/product/linux/libnetty-java.md) | Ubuntu 25.04 (plucky) | 4.1.48-6 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2022-41881](https://patchblox.com/security/data/cve/CVE-2022-41881.md) | High | libnetty-java: Netty project is an event-driven asynchronous network applicationframework | 7.5 | 0.0158 |  |
| [CVE-2021-37137](https://patchblox.com/security/data/cve/CVE-2021-37137.md) | Routine | libnetty-java: The Snappy frame decoder function doesn't restrict the chunk length whichmay lead to excessive memory usage | n/a | 0.0657 |  |
| [CVE-2021-37136](https://patchblox.com/security/data/cve/CVE-2021-37136.md) | Routine | libnetty-java: The Bzip2 decompression decoder function doesn't allow setting sizerestrictions on the decompressed output data (whic... | n/a | 0.0591 |  |
| [CVE-2021-43797](https://patchblox.com/security/data/cve/CVE-2021-43797.md) | Routine | libnetty-java: Netty is an asynchronous event-driven network application framework forrapid development of maintainable high perform... | 6.5 | 0.0288 |  |
| [CVE-2022-41915](https://patchblox.com/security/data/cve/CVE-2022-41915.md) | Routine | libnetty-java: Netty project is an event-driven asynchronous network applicationframework | 6.5 | 0.0095 |  |

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Data as of 2026-11-09T19:38:12Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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