Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update
Description
Multiple remote code execution vulnerabilities have been identified in Valkey, an advanced key-value store used in Red Hat Enterprise Linux and Red Hat Hardened Images. These include use-after-free flaws in stream deserialization and TLS pending-data processing. An update rebasing Valkey to version 8.0.10 and later 9.0.6 addresses these issues. The vulnerabilities are rated with high severity by Red Hat Product Security.
Affected software
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Valkey, a data structure server supporting atomic operations on various data types, contains multiple remote code execution vulnerabilities due to use-after-free conditions in stream deserialization (CVE-2026-63639) and TLS pending-data processing (CVE-2026-56684). Additionally, Redis included in the advisory has a remote code execution vulnerability via a specially crafted RESTORE payload (CVE-2026-66373). Red Hat has released updates rebasing Valkey to version 8.0.10 and later 9.0.6 to fix these issues. The advisory covers Red Hat Enterprise Linux 10 and Red Hat Hardened Images RPMs across multiple architectures.
Potential Impact
Successful exploitation of these vulnerabilities could allow remote attackers to execute arbitrary code on affected systems running vulnerable versions of Valkey or Redis. This poses a significant risk to system confidentiality, integrity, and availability. The vulnerabilities are rated as high severity by Red Hat Product Security.
Mitigation Recommendations
Red Hat has released updated packages for Valkey rebased to version 8.0.10 and 9.0.6 that fix the described remote code execution vulnerabilities. Users should apply these official updates as soon as possible. Detailed update instructions are available from Red Hat at https://access.redhat.com/articles/11258 and https://images.redhat.com/. No alternative mitigations or workarounds are specified in the advisory.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:64796
- Cve Count
- 3
- Additional Cves
- ["CVE-2026-63639","CVE-2026-66373"]
- State
- PUBLISHED
Threat ID: 6aa005a7acd9273b49ab4578
Added to database: 09/08/2026, 12:55:03 UTC
Last enriched: 10/20/2026, 22:52:24 UTC
Last updated: 10/23/2026, 01:15:25 UTC
Views: 68
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