DEBIAN-CVE-2025-64345

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Source

https://security-tracker.debian.org/tracker/CVE-2025-64345

Import Source

https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2025-64345.json

JSON Data

https://api.osv.dev/v1/vulns/DEBIAN-CVE-2025-64345

Upstream

CVE-2025-64345

Published

2025-11-12T22:15:49.623Z

Modified

2026-03-17T02:50:41.265371Z

Severity

1.8 (Low) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:N/I:L/A:N CVSS Calculator

Summary

[none]

Details

Wasmtime is a runtime for WebAssembly. Prior to version 38.0.4, 37.0.3, 36.0.3, and 24.0.5, Wasmtime's Rust embedder API contains an unsound interaction where a WebAssembly shared linear memory could be viewed as a type which provides safe access to the host (Rust) to the contents of the linear memory. This is not sound for shared linear memories, which could be modified in parallel, and this could lead to a data race in the host. Patch releases have been issued for all supported versions of Wasmtime, notably: 24.0.5, 36.0.3, 37.0.3, and 38.0.4. These releases reject creation of shared memories via Memory::new and shared memories are now excluded from core dumps. As a workaround, eembeddings affected by this issue should use SharedMemory::new instead of Memory::new to create shared memories. Affected embeddings should also disable core dumps if they are unable to upgrade. Note that core dumps are disabled by default but the wasm threads proposal (and shared memory) is enabled by default.

References

https://security-tracker.debian.org/tracker/CVE-2025-64345

Affected packages

Debian:13 / rust-wasmtime

Package

Name: rust-wasmtime
Purl: pkg:deb/debian/rust-wasmtime?arch=source

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

26.*

26.0.1+dfsg-3

26.0.1+dfsg-4

26.0.1+dfsg-5

26.0.1+dfsg-6

26.0.1+dfsg-7

26.0.1+dfsg-8

26.0.1+dfsg-9

26.0.1+dfsg-10

27.*

27.0.0+dfsg-2

27.0.0+dfsg-3

27.0.0+dfsg-4

28.*

28.0.1+dfsg-1

28.0.1+dfsg-2

28.0.1+dfsg-3

29.*

29.0.1+dfsg-1

29.0.1+dfsg-2

29.0.1+dfsg-3

29.0.1+dfsg-4

29.0.1+dfsg-5

29.0.1+dfsg-6

29.0.1+dfsg-7

29.0.1+dfsg-8

36.*

36.0.5+dfsg-1

36.0.5+dfsg-2

36.0.5+dfsg-3

36.0.5+dfsg-4

36.0.5+dfsg-5

36.0.6+dfsg-1

36.0.6+dfsg-2

36.0.6+dfsg-3

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Database specific

source

"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2025-64345.json"

Debian:14 / rust-wasmtime