Bug 2563596 (CVE-2026-119142) - CVE-2026-119142 wasmtime: Wasmtime: Denial of Service via canceled asynchronous function calls
Summary: CVE-2026-119142 wasmtime: Wasmtime: Denial of Service via canceled asynchrono...
Keywords:
Status: NEW
Alias: CVE-2026-119142
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 18:05 UTC by OSIDB Bzimport
Modified: 2026-10-29 18:32 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
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Description OSIDB Bzimport 2026-10-29 18:05:19 UTC 
Wasmtime 46.0.0 before 48.0.6 and 49.0.0 before 49.0.3 contains a denial of service vulnerability where dropping the Future returned by TypedFunc::call_async can panic the host. When the guest task has not started, cleanup code searches only one location for work items and unwraps the resulting error, crashing embedders that cancel pending calls.
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