Source: valkey
Version: 8.1.4+dfsg1-2
Severity: grave
Tags: security upstream
Justification: user security hole
Forwarded: https://github.com/valkey-io/valkey/pull/4234
X-Debbugs-Cc: [email protected], Debian Security Team <[email protected]>

Hi,

The following vulnerability was published for valkey.

CVE-2026-56684[0]:
| 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.


If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2026-56684
    https://www.cve.org/CVERecord?id=CVE-2026-56684
[1] https://github.com/valkey-io/valkey/pull/4234
[2] https://github.com/valkey-io/valkey/security/advisories/GHSA-53mc-f3m3-99vh
[3] 
https://github.com/valkey-io/valkey/commit/33b14adf2026cfd8728607b026edb24843805844

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore

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