| Name | CVE-2026-63639 |
| 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 RESTORE command accepts a malformed RDB stream payload that assigns one Pending Entry List NACK to multiple consumers during stream consumer-group deserialization, causing a use-after-free when one consumer is deleted while another still references the shared NACK and potentially allowing remote code execution. 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 | 1144957 |
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 | 1144957 |
https://github.com/valkey-io/valkey/security/advisories/GHSA-mvcj-73cw-22m4
https://github.com/valkey-io/valkey/pull/4073
Fixed by: https://github.com/valkey-io/valkey/commit/98465eaffe3f95524a5046318bfbc4bdb9798291 (8.1.9)
Fixed by: https://github.com/valkey-io/valkey/commit/f8d2027e8d4df790ac04974bf606408c8ea62778 (8.0.10)
The same flaw in redis is tracked in CVE-2026-66373, where redis is not-affected
because the incomplete fix for CVE-2026-25243 was never applied