Bug 2517907 (CVE-2026-56684) - CVE-2026-56684 valkey: Valkey: Remote code execution via TLS pending-data processing use-after-free
Summary: CVE-2026-56684 valkey: Valkey: Remote code execution via TLS pending-data pro...
Keywords:
Status: NEW
Alias: CVE-2026-56684
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-08-18 14:35 UTC by OSIDB Bzimport
Modified: 2026-09-08 07:49 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

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Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2026:64796 0 None None None 2026-09-08 04:22:27 UTC
Red Hat Product Errata RHSA-2026:64807 0 None None None 2026-09-08 05:30:56 UTC

Description OSIDB Bzimport 2026-08-18 14:35:16 UTC 
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.
Comment 2 errata-xmlrpc 2026-09-08 04:22:26 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:64796 https://access.redhat.com/errata/RHSA-2026:64796
Comment 3 errata-xmlrpc 2026-09-08 05:30:55 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:64807 https://access.redhat.com/errata/RHSA-2026:64807
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