{"schemaVersion":3,"id":"CVE-2025-29785","aliases":["UBUNTU-CVE-2025-29785","DEBIAN-CVE-2025-29785","GHSA-j972-j939-p2v3","GO-2025-3735"],"status":"published","duplicateOf":null,"title":null,"description":"quic-go is an implementation of the QUIC protocol in Go. The loss recovery logic for path probe packets that was added in the v0.50.0 release can be used to trigger a nil-pointer dereference by a malicious QUIC client. In order to do so, the attacker first sends valid QUIC packets from different remote addresses (thereby triggering the newly added path validation logic: the server sends path probe packets), and then sending ACKs for packets received from the server specifically crafted to trigger the nil-pointer dereference. v0.50.1 contains a patch that fixes the vulnerability. This release contains a test that generates random sequences of sent packets (both regular and path probe packets), that was used to verify that the patch actually covers all corner cases. 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