Summary
A replacement for libslirp and VPNKit, written in pure Go. It is based on the network stack of gVisor. Compared to libslirp, gvisor-tap-vsock brings a configurable DNS server and dynamic port forwarding.
Security Fix(es):
* net/[http:](http:) Request smuggling due to acceptance of invalid chunked data in net/http (CVE-2025-22871)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Fixed packages 2
| Release | Package | Fixed in |
|---|---|---|
| AlmaLinux · 9 | gvisor-tap-vsock | 6:0.8.5-2.el9_6 |
| AlmaLinux · 9 | gvisor-tap-vsock-gvforwarder | 6:0.8.5-2.el9_6 |
Vulnerabilities 1
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Critical 9.1
Request smuggling due to acceptance of invalid chunked data in net/http
The net/http package improperly accepts a bare LF as a line terminator in chunked data chunk-size lines. This can permit request smuggling if a net/http server is used in conjunction with a server that incorrectly accepts a bare LF as part of a chunk-ext.