Vulnerability · Published Jun 2, 2025 · Assigned by GitHub_M
CVE-2025-29785quic-go Has Panic in Path Probe Loss Recovery Handling
High 7.5
In plain English
A high-severity security flaw in quic-go from quic-go. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 43% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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. No known workarounds are available.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | golang-github-lucas-clemente-quic-go | no fix listed | DEBIAN-CVE-2025-29785 |
| Debian:13 | golang-github-lucas-clemente-quic-go | 0.50.1-1 | DEBIAN-CVE-2025-29785 |
| Debian:14 | golang-github-lucas-clemente-quic-go | 0.50.1-1 | DEBIAN-CVE-2025-29785 |
| Go | github.com/quic-go/quic-go | 0.50.1 | GO-2025-3735 |
| Go | github.com/quic-go/quic-go | 0.50.1 | GHSA-j972-j939-p2v3 |
| Ubuntu:22.04:LTS | golang-github-lucas-clemente-quic-go | no fix listed | UBUNTU-CVE-2025-29785 |
| Ubuntu:24.04:LTS | golang-github-lucas-clemente-quic-go | no fix listed | UBUNTU-CVE-2025-29785 |
Affected products (as reported)
Weakness: CWE-248 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
- https://github.com/quic-go/quic-go/security/advisories/GHSA-j972-j939-p2v3 x_refsource_CONFIRM
- https://github.com/quic-go/quic-go/issues/4981 x_refsource_MISC
- https://github.com/quic-go/quic-go/commit/b90058aba5f65f48e0e150c89bbaa21a72dda4de x_refsource_MISC