Bug 2559257 (CVE-2026-115390) - CVE-2026-115390 wasmtime: wasmtime: Denial of Service via fuel accounting flaw
Summary: CVE-2026-115390 wasmtime: wasmtime: Denial of Service via fuel accounting flaw
Keywords:
Status: NEW
Alias: CVE-2026-115390
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: 2026-10-22 19:43 UTC by OSIDB Bzimport
Modified: 2026-10-29 17:15 UTC (History)
2 users (show)

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

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Description OSIDB Bzimport 2026-10-22 19:43:23 UTC 
Wasmtime 47.0.0 before 48.0.3 and 49.0.0 before 49.0.1 contains a fuel accounting flaw in Cranelift-compiled call_ref and try_table catch paths. Malicious guests can reset consumed fuel after calls to run exponentially long on linear fuel, evading timeouts and periodic yields for denial of service.
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