| Name | CVE-2025-68121 |
| Description | During session resumption in crypto/tls, if the underlying Config has its ClientCAs or RootCAs fields mutated between the initial handshake and the resumed handshake, the resumed handshake may succeed when it should have failed. This may happen when a user calls Config.Clone and mutates the returned Config, or uses Config.GetConfigForClient. This can cause a client to resume a session with a server that it would not have resumed with during the initial handshake, or cause a server to resume a session with a client that it would not have resumed with during the initial handshake. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 1125916, 1125917 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| golang-1.15 (PTS) | bullseye | 1.15.15-1~deb11u4 | vulnerable |
| golang-1.19 (PTS) | bookworm | 1.19.8-2 | vulnerable |
| golang-1.24 (PTS) | trixie | 1.24.4-1 | vulnerable |
| forky | 1.24.9-1 | vulnerable | |
| sid | 1.24.12-1 | fixed | |
| golang-1.25 (PTS) | forky | 1.25.3-1 | vulnerable |
| sid | 1.25.7-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| golang-1.15 | source | (unstable) | (unfixed) | |||
| golang-1.19 | source | (unstable) | (unfixed) | |||
| golang-1.24 | source | (unstable) | 1.24.12-1 | 1125917 | ||
| golang-1.25 | source | (unstable) | 1.25.6-1 | 1125916 |
[trixie] - golang-1.24 <no-dsa> (Minor issue)
[bookworm] - golang-1.19 <no-dsa> (Minor issue)
[bullseye] - golang-1.15 <postponed> (Limited support, minor issue, follow bookworm DSAs/point-releases)
https://groups.google.com/g/golang-announce/c/Vd2tYVM8eUc
https://github.com/golang/go/issues/77113
Fixed by: https://github.com/golang/go/commit/4be38528a68a8b0c4e101576df200c214ad49c26 (go1.25.6)
Fixed by: https://github.com/golang/go/commit/d0754e6242e70e171a888b6c5e0336bbf014e538 (go1.24.12)
Followup/Documentation update: https://github.com/golang/go/issues/77217
https://groups.google.com/g/golang-announce/c/K09ubi9FQFk
https://github.com/golang/go/commit/9f30ca9189831b8061a6ee46c0a2a331b4864559 (go1.26rc3)
https://github.com/golang/go/commit/c7d189e65c229a840c1e3e310cf4cd4ca0cb4e84 (go1.25.7)
https://github.com/golang/go/commit/6a501314718b6d69bad1723b3065ca6067b560ea (go1.24.13)