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EUVD-2026-161633

fkie_cve-2023-46239

quic-go is an implementation of the QUIC protocol in Go. Starting in version 0.37.0 and prior to version 0.37.3, by serializing an ACK frame after the CRYTPO that allows a node to complete the handshake, a remote node could trigger a nil pointer dereference (leading to a panic) when the node attempted to drop the Handshake packet number space. An attacker can bring down a quic-go node with very minimal effort. Completing the QUIC handshake only requires sending and receiving a few packets. Version 0.37.3 contains a patch. Versions before 0.37.0 are not affected.

GHSA-3q6m-v84f-6p9h — quic-go vulnerable to pointer dereference that can lead to panic

Affected: Go: github.com/quic-go/quic-go

quic-go is an implementation of the [QUIC](https://datatracker.ietf.org/doc/html/rfc9000) transport protocol in Go. By serializing an ACK frame after the CRYTPO that allows a node to complete the handshake, a remote node could trigger a nil pointer dereference (leading to a panic) when the node attempted to drop the Handshake packet number space.

**Impact**

An attacker can bring down a quic-go node with very minimal effort. Completing the QUIC handshake only requires sending and receiving a few packets.

**Patches**

[v0.37.3](https://github.com/quic-go/quic-go/releases/tag/v0.37.3) contains a patch. Versions before v0.37.0 are not affected.

gsd-2023-46239

UBUNTU-CVE-2023-46239

Affected: Ubuntu:22.04:LTS: golang-github-lucas-clemente-quic-go, Ubuntu:24.04:LTS: golang-github-lucas-clemente-quic-go, Ubuntu:25.10: golang-github-lucas-clemente-quic-go, Ubuntu:26.04:LTS: golang-github-lucas-clemente-quic-go