| Name | CVE-2026-56684 |
| Description | Valkey is a distributed key-value database. Prior to 7.2.14, 8.0.10, 8.1.9, 9.0.5, and 9.1.1, Valkey's tlsProcessPendingData function iterates pending_list while an authenticated client can trigger CLIENT KILL, causing connTLSClose to delete the iterator's cached next node and producing a use-after-free that can crash the server or potentially allow remote code execution when TLS is enabled. This issue is fixed in versions 7.2.14, 8.0.10, 8.1.9, 9.0.5, and 9.1.1. |
| 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 | 1144956 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| redict (PTS) | forky, sid | 7.3.6+ds-3 | vulnerable |
| valkey (PTS) | trixie (security), trixie | 8.1.1+dfsg1-3+deb13u2 | vulnerable |
| forky, sid | 9.1.2-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| redict | source | (unstable) | (unfixed) | |||
| valkey | source | (unstable) | 9.1.1-1 | 1144956 |
https://github.com/valkey-io/valkey/security/advisories/GHSA-53mc-f3m3-99vh
https://github.com/valkey-io/valkey/pull/4234
Fixed by: https://github.com/valkey-io/valkey/commit/33b14adf2026cfd8728607b026edb24843805844 (8.1.9)
The same flaw in redis is tracked in CVE-2026-81934