Allocation of Resources Without Limits or Throttling Affecting rust-wasmtime package, versions <36.0.8+dfsg-1


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.24% (16th percentile)

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  • Snyk IDSNYK-DEBIAN14-RUSTWASMTIME-16748505
  • published18 May 2026
  • disclosed14 May 2026

Introduced: 14 May 2026

CVE-2026-44216  (opens in a new tab)
CWE-770  (opens in a new tab)

How to fix?

Upgrade Debian:14 rust-wasmtime to version 36.0.8+dfsg-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream rust-wasmtime package and not the rust-wasmtime package as distributed by Debian. See How to fix? for Debian:14 relevant fixed versions and status.

Wasmtime is a runtime for WebAssembly. From 30.0.0 to 36.0.8, 43.0.2, and 44.0.1, Wasmtime's allocation logic for a WebAssembly table contained checked arithmetic which panicked on overflow. This overflow is possible to trigger, and thus panic, when a table with an extremely large size is allocated. This is possible with the WebAssembly memory64 proposal where tables can have sizes in the 64-bit range as opposed to the previous 32-bit range which would not overflow. The panic happens when attempting to create a very large table, such as when instantiating a WebAssembly module or component. This vulnerability is fixed in 36.0.8, 43.0.2, and 44.0.1.

CVSS Base Scores

version 3.1