Bug 2563473 (CVE-2026-119134) - CVE-2026-119134 wasmtime: Wasmtime: Denial of Service via unbounded memory growth in resource handle tables
Summary: CVE-2026-119134 wasmtime: Wasmtime: Denial of Service via unbounded memory gr...
Keywords:
Status: NEW
Alias: CVE-2026-119134
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-10-29 16:25 UTC by OSIDB Bzimport
Modified: 2026-10-29 16:36 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
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Description OSIDB Bzimport 2026-10-29 16:25:22 UTC 
Wasmtime before 36.0.18, 37.0.0 before 48.0.6, and 49.0.0 before 49.0.3 caps component-model resource handle tables only per component instance and does not charge handle allocations to any ResourceLimiter or StoreLimits. A malicious guest can repeatedly call resource.new and instantiate sub-components to exceed the per-instance cap many times over, causing unbounded host memory growth.
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