Bug 2517906 (CVE-2026-63639) - CVE-2026-63639 valkey: Valkey: Remote code execution via use-after-free in stream deserialization
Summary: CVE-2026-63639 valkey: Valkey: Remote code execution via use-after-free in st...
Keywords:
Status: NEW
Alias: CVE-2026-63639
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: 2026-09-17 11:35 UTC (History)
2 users (show)

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

Attachments (Terms of Use)


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 05:30:54 UTC
Red Hat Product Errata RHSA-2026:68601 0 None None None 2026-09-17 11:35:11 UTC

Description OSIDB Bzimport 2026-08-18 14:35:15 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 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.
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 05:30:53 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
Comment 5 Jon Orris 2026-09-17 11:35:10 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10.0 Extended Update Support

Via RHSA-2026:68601 https://access.redhat.com/errata/RHSA-2026:68601
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