DEBIAN-CVE-2026-24116
Wasmtime is a runtime for WebAssembly. Starting in version 29.0.0 and prior to version 36.0.5, 40.0.3, and 41.0.1, on x86-64 platforms with AVX, Wasmtime's compilation of the `f64.copysign` WebAssembly instruction with Cranelift may load 8 more bytes than is necessary. When signals-based-traps are disabled this can result in a uncaught segfault due to loading from unmapped guard pages. With guard pages disabled it's possible for out-of-sandbox data to be loaded, but unless there is another bug in Cranelift this data is not visible to WebAssembly guests. Wasmtime 36.0.5, 40.0.3, and 41.0.1 have been released to fix this issue. Users are recommended to upgrade to the patched versions of Wasmtime. Other affected versions are not patched and users should updated to supported major version instead. This bug can be worked around by enabling signals-based-traps. While disabling guard pages can be a quick fix in some situations, it's not recommended to disabled guard pages as it is a key defense-in-depth measure of Wasmtime.
DEBIAN-CVE-2026-24116
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: osv:DEBIAN-CVE-2026-24116
rust-wasmtime
Source reference: /affected/0/package/name
- Affected versions
- 26.0.1+dfsg-10
Source reference:
/affected/0/versions26.0.1+dfsg-3Source reference:
/affected/0/versions26.0.1+dfsg-4Source reference:
/affected/0/versions26.0.1+dfsg-5Source reference:
/affected/0/versions26.0.1+dfsg-6Source reference:
/affected/0/versions26.0.1+dfsg-7Source reference:
/affected/0/versions26.0.1+dfsg-8Source reference:
/affected/0/versions26.0.1+dfsg-9Source reference:
/affected/0/versions27.0.0+dfsg-2Source reference:
/affected/0/versions27.0.0+dfsg-3Source reference:
/affected/0/versions27.0.0+dfsg-4Source reference:
/affected/0/versions28.0.1+dfsg-1Source reference:
/affected/0/versions28.0.1+dfsg-2Source reference:
/affected/0/versions28.0.1+dfsg-3Source reference:
/affected/0/versions29.0.1+dfsg-1Source reference:
/affected/0/versions29.0.1+dfsg-2Source reference:
/affected/0/versions29.0.1+dfsg-3Source reference:
/affected/0/versions29.0.1+dfsg-4Source reference:
/affected/0/versions29.0.1+dfsg-5Source reference:
/affected/0/versions29.0.1+dfsg-6Source reference:
/affected/0/versions29.0.1+dfsg-7Source reference:
/affected/0/versions29.0.1+dfsg-8Source reference:
/affected/0/versions - Fixed versions
- 36.0.5+dfsg-1
Source reference:
/affected/0/ranges - Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "36.0.5+dfsg-1"
}
]
}
],
"package": {
"name": "rust-wasmtime",
"purl": "pkg:deb/debian/rust-wasmtime?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"26.0.1+dfsg-10",
"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",
"27.0.0+dfsg-2",
"27.0.0+dfsg-3",
"27.0.0+dfsg-4",
"28.0.1+dfsg-1",
"28.0.1+dfsg-2",
"28.0.1+dfsg-3",
"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"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-24116.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #57430 · Revision 1
- Added to Heist Feed
- Publisher date