Bug 2526233 (CVE-2026-82677)

Summary: CVE-2026-82677 valkey: Valkey: Denial of Service via double free in Module Timer subsystem
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: rhel-process-autobot, watson-tool-maintainers
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in valkey-io valkey. A remote attacker could exploit a double free vulnerability in the `moduleTimerHandler` function within the Module Timer subsystem (src/module.c). This flaw could lead to a denial of service.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On: 2533980, 2533981    
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Description OSIDB Bzimport 2026-08-31 10:21:28 UTC
A vulnerability was determined in valkey-io valkey 9.1.0. Impacted is the function moduleTimerHandler of the file src/module.c of the component Module Timer Subsystem. This manipulation causes double free. The attack can be initiated remotely. The exploit has been publicly disclosed and may be utilized. Patch name: b349fe2821e3998534b1454c1b64a478daf8c6b7. To fix this issue, it is recommended to deploy a patch.