How many CVEs have patched wasmtime_val_t?

1 published CVEs changed wasmtime_val_t in bytecodealliance/wasmtime, in 1 distinct patches totalling 42 changed lines, between 2025 and 2025.

What is the latest CVE that changed wasmtime_val_t?

CVE-2025-61670 (Wasmtime has memory leak in C API with `externref` and `anyref` types), published 2025-10-07, changed lines 317 to 343 of crates/c-api/src/val.rs.

How does wasmtime_val_t compare to the rest of bytecodealliance/wasmtime?

bytecodealliance/wasmtime has 27 CVEs with a located fix in total; 1 of them changed wasmtime_val_t.

What do the line numbers refer to?

Line numbers are in the fixed version of the file, as the upstream patch left it. A CVE whose fix was backported to several branches is listed once, with the lines from the upstream commit.

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Wasmtime
Wasmtime_val_t

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Weaknesses (CWE)The MITRE CWE weakness catalog
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Patched Functions
Bytecodealliance
Wasmtime
Wasmtime_val_t

wasmtime_val_t in bytecodealliance/wasmtime: Patched by 1 CVEs

bytecodealliance/wasmtime

Type

wasmtime_val_t

Name: wasmtime_val_t in bytecodealliance/wasmtime: CVE fixes
Creator: RadicalNotion.AI
License: https://creativecommons.org/licenses/by-nc/4.0/

crates/c-api/src/val.rs

Last patched October 7, 2025

CVEs

That changed this function

Distinct patches

Backports counted once

Lines changed

Added plus removed

2025

Years

By CVE publication date

Overview

wasmtime_val_t in bytecodealliance/wasmtime was changed by 1 published CVE fixes in 2025, in 1 distinct patches that added or removed 42 lines in total.

bytecodealliance/wasmtime has 27 CVEs with a located fix in total, so 4% of them touched this function.

CVEs that patched it

Every published CVE whose fix changed wasmtime_val_t, newest first, with the lines each fix touched.

Wasmtime has memory leak in C API with `externref` and `anyref` types
CVE-2025-61670 · lines 317–343 · +20 −22
Low · CVSS 1.0
EPSS 0.2%2025-10-07

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Other hotspots in the repository

Functions in bytecodealliance/wasmtime changed by the most CVE fixes.

and_then2 CVEs · crates/wasmtime/src/runtime/component/values.rs hostcall_fuel2 CVEs · crates/wasmtime/src/runtime/component/store.rs Done2 CVEs · crates/wasi-http/src/types_impl.rs Err2 CVEs · crates/wasi-http/src/body.rs Some2 CVEs · crates/wasi-http/src/body.rs as_ref2 CVEs · crates/wasi-http/src/types_impl.rs

All patched functions in bytecodealliance/wasmtime

Frequently asked questions

Common questions about CVE fixes to wasmtime_val_t.

How many CVEs have patched wasmtime_val_t?: 1 published CVEs changed wasmtime_val_t in bytecodealliance/wasmtime, in 1 distinct patches totalling 42 changed lines, between 2025 and 2025.
What is the latest CVE that changed wasmtime_val_t?: CVE-2025-61670 (Wasmtime has memory leak in C API with `externref` and `anyref` types), published 2025-10-07, changed lines 317 to 343 of crates/c-api/src/val.rs.
How does wasmtime_val_t compare to the rest of bytecodealliance/wasmtime?: bytecodealliance/wasmtime has 27 CVEs with a located fix in total; 1 of them changed wasmtime_val_t.
What do the line numbers refer to?: Line numbers are in the fixed version of the file, as the upstream patch left it. A CVE whose fix was backported to several branches is listed once, with the lines from the upstream commit.

References

crates/c-api/src/val.rs on GitHub (opens in a new tab)
All patched functions in bytecodealliance/wasmtime
Patched functions directory

Fix locations are computed by RadicalNotion.AI from the upstream patch diff of each CVE. CVE data is sourced from the CVE Program.

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