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[USN-8089-1] Go Networking vulnerabilities

Posted on 12 March 2026
Ubuntu Security

==========================================================================Ubuntu Security Notice USN-8089-1
March 12, 2026

golang-golang-x-net vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS

Summary:

Several security issues were fixed in Go Networking.

Software Description:
- golang-golang-x-net: Supplementary Go networking libraries

Details:

Bahruz Jabiyev, Tommaso Innocenti, Anthony Gavazzi, Steven Sprecher, and
Kaan Onarlioglu discovered that servers using Go Networking could hang
during shutdown if preempted by a fatal error. An attacker could possibly
use this to cause a denial of service. This issue only affected Ubuntu
22.04 LTS. (CVE-2022-27664)

Arpad Ryszka and Jakob Ackermann discovered that a maliciously crafted
stream could cause excessive CPU usage in Go Networking's HPACK decoder. An
attacker could possibly use this to cause a denial of service. This issue
only affected Ubuntu 22.04 LTS. (CVE-2022-41723)

Mohammad Thoriq Aziz discovered that Go Networking did not properly
sanitize some text nodes. An attacker could possibly use this to execute
arbitrary code. This issue only affected Ubuntu 22.04 LTS. (CVE-2023-3978)

Sean Ng discovered an error in Go Networking's HTML tag handling. An
attacker could possibly use this to cause a denial of service.
(CVE-2025-22872)

Guido Vranken and Jakub Ciolek discovered that a maliciously crafted HTML
document could exhaust system resources on servers using Go Networking. An
attacker could possibly use this to cause a denial of service.
(CVE-2025-47911)

Guido Vranken discovered that a maliciously crafted HTML document could put
servers using Go Networking into an infinite loop. An attacker could
possibly use this to cause a denial of service. (CVE-2025-58190)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 24.04 LTS
golang-golang-x-net-dev 1:0.21.0+dfsg-1ubuntu0.1~esm2
Available with Ubuntu Pro

Ubuntu 22.04 LTS
golang-golang-x-net-dev 1:0.0+git20211209.491a49a+dfsg-1ubuntu0.1~esm2
Available with Ubuntu Pro

In general, a standard system update will make all the necessary changes.

References:
https://ubuntu.com/security/notices/USN-8089-1
CVE-2022-27664, CVE-2022-41723, CVE-2023-3978, CVE-2025-22872,
CVE-2025-47911, CVE-2025-58190

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