CVE-2026-44216
HIGH(7.5)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CVSS 7.5 — Hoch
EPSS-Score
0%
Exploit-Wahrscheinlichkeit (30 Tage)
CVSS Score
7.5
Technische Schwere
Beschreibung
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.
GitHub Advisories
wasmtime has a panic when allocating a table exceeding the size of the host's address space
Referenzen
- https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-p8xm-42r7-...
- https://access.redhat.com/errata/RHSA-2026:38187
- https://access.redhat.com/security/cve/CVE-2026-44216
- https://bugzilla.redhat.com/show_bug.cgi?id=2477467
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44216.json