Packages
- netty - event-driven asynchronous network application framework
Details
It was discovered that Netty did not properly handle malformed HTTP/2
control frames. An attacker could use this to cause a denial of service
via resource exhaustion. This issue only affects Ubuntu 18.04 LTS,
Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, and Ubuntu 24.04 LTS. (CVE-2025-55163)
It was discovered that Netty did not properly validate the request URI
for line-break characters. An attacker could use this to perform CRLF
injection and request smuggling. (CVE-2025-67735)
It was discovered that Netty did not properly handle malformed HTTP/2
control frames. An attacker could use this to cause a denial of service
via resource exhaustion. This issue only affects Ubuntu 18.04 LTS,
Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, and Ubuntu 24.04 LTS. (CVE-2025-55163)
It was discovered that Netty did not properly validate the request URI
for line-break characters. An attacker could use this to perform CRLF
injection and request smuggling. (CVE-2025-67735)
Update instructions
In general, a standard system update will make all the necessary changes.
Learn more about how to get the fixes.The problem can be corrected by updating your system to the following package versions:
| Ubuntu Release | Package Version | ||
|---|---|---|---|
| 24.04 LTS noble | libnetty-java – 1:4.1.48-9ubuntu0.2 | ||
| 22.04 LTS jammy | libnetty-java – 1:4.1.48-4+deb11u2ubuntu0.2 | ||
| 20.04 LTS focal | libnetty-java – 1:4.1.45-1ubuntu0.1~esm7 | ||
| 18.04 LTS bionic | libnetty-java – 1:4.1.7-4ubuntu0.1+esm7 | ||
| 16.04 LTS xenial | libnetty-java – 1:4.0.34-1ubuntu0.1~esm5 | ||
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