CVE-2026-115384 affecting package rust 1.75.0-31
Wasmtime 39.0.0 before 48.0.4 and 49.0.0 before 49.0.2 contains a stack buffer overflow vulnerability that allows malicious guests to write ~16KB to the native stack via unvalidated async callback result types. Attackers can supply components with mistyped component-model-async callback functions to overwrite return addresses, crashing the host or escaping the sandbox.
- Products
- rust
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-115384
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 17:32 UTC · Revision 1
Source evidence
CVE-2026-115384 affecting package rust 1.75.0-31
core-osv · Original sourcePublished 22 Oct 2026, 19:17 UTC
Wasmtime 39.0.0 before 48.0.4 and 49.0.0 before 49.0.2 contains a stack buffer overflow vulnerability that allows malicious guests to write ~16KB to the native stack via unvalidated async callback result types. Attackers can supply components with mistyped component-model-async callback functions to overwrite return addresses, crashing the host or escaping the sandbox.
osv:AZL-111077
rust
Fixed versions: Not specified
Complete source record
{
"id": "25969aa0b863aca358919500614718237e4bf28a9bd963dedb83dc613ca3ff42",
"url": "https://osv.dev/vulnerability/AZL-111077",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2026-115384 affecting package rust 1.75.0-31",
"summary": "Wasmtime 39.0.0 before 48.0.4 and 49.0.0 before 49.0.2 contains a stack buffer overflow vulnerability that allows malicious guests to write ~16KB to the native stack via unvalidated async callback result types. Attackers can supply components with mistyped component-model-async callback functions to overwrite return addresses, crashing the host or escaping the sandbox.",
"evidence": "osv:AZL-111077",
"products": [
{
"name": {
"value": "rust",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": []
}
],
"severity": "unknown",
"structured": {
"id": "AZL-111077",
"aliases": [
"AZL-111077"
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"last_affected": "1.75.0-31"
}
]
}
],
"package": {
"name": "rust",
"purl": "pkg:rpm/azure-linux/rust",
"ecosystem": "Azure Linux:3"
},
"database_specific": {
"source": "https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-111077.json"
}
}
],
"modified": "2026-10-27T05:36:16Z",
"provider": "osv",
"upstream": [
"CVE-2026-115384"
],
"references": [
"https://nvd.nist.gov/vuln/detail/CVE-2026-115384"
]
},
"related_cves": [
{
"value": "CVE-2026-115384",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 460668,
"published_at": "2026-10-22T19:17:45+00:00"
}