Bug 2563485 (CVE-2026-119141)
| Summary: | CVE-2026-119141 wasmtime: Wasmtime: Denial of Service via host panic during memory reallocation | ||
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| Product: | [Other] Security Response | Reporter: | OSIDB Bzimport <bzimport> |
| Component: | vulnerability | Assignee: | Product Security DevOps Team <prodsec-dev> |
| Status: | NEW --- | QA Contact: | |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | unspecified | CC: | rhel-process-autobot, watson-tool-maintainers |
| Target Milestone: | --- | Keywords: | Security |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | --- | |
| Doc Text: |
A flaw was found in Wasmtime. A malicious WebAssembly (Wasm) module can cause a Denial of Service (DoS) by crashing the host runtime. This issue occurs because an internal execution flag is not properly cleared during memory reallocation (realloc), allowing the guest module to unexpectedly call into host operations while handling stream or future results. As a result, the host encounters an unexpected state, leading to a panic and termination.
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | Type: | --- | |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
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Description
OSIDB Bzimport
2026-10-29 16:33:59 UTC
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