CVE-2025-58057
Publication date 4 September 2025
Last updated 10 December 2025
Ubuntu priority
Description
Netty is an asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients. In netty-codec-compression versions 4.1.124.Final and below, and netty-codec versions 4.2.4.Final and below, when supplied with specially crafted input, BrotliDecoder and certain other decompression decoders will allocate a large number of reachable byte buffers, which can lead to denial of service. BrotliDecoder.decompress has no limit in how often it calls pull, decompressing data 64K bytes at a time. The buffers are saved in the output list, and remain reachable until OOM is hit. This is fixed in versions 4.1.125.Final of netty-codec and 4.2.5.Final of netty-codec-compression.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| netty | 25.10 questing |
Fixed 1:4.1.48-10ubuntu0.25.10.2
|
| 24.04 LTS noble |
Fixed 1:4.1.48-9ubuntu0.1
|
|
| 22.04 LTS jammy |
Fixed 1:4.1.48-4+deb11u2ubuntu0.1
|
|
| 20.04 LTS focal |
Fixed 1:4.1.45-1ubuntu0.1~esm4
|
|
| 18.04 LTS bionic |
Fixed 1:4.1.7-4ubuntu0.1+esm5
|
|
| 16.04 LTS xenial | Ignored end of ESM support, was ignored [backport too intrusive] | |
| 14.04 LTS trusty | Ignored backport too intrusive |
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Related Ubuntu Security Notices (USN)
- USN-7918-1
- Netty vulnerabilities
- 9 December 2025