UBUNTU-CVE-2026-115391

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Source
https://ubuntu.com/security/CVE-2026-115391
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-115391.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-115391
Upstream
Published
2026-10-26T00:00:00Z
Modified
2026-10-27T04:17:48Z
Severity
  • 5.8 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:N/I:N/A:H CVSS Calculator
  • 6.9 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

Wasmtime 46.0.0 before 46.0.3 and 47.0.0 before 47.0.4 contains an uncontrolled resource allocation vulnerability in its WASIp3 implementation that buffers guest-specified-length writes on the host without limit. Malicious guests can offer large buffers to WASIp3 file or HTTP write streams, causing the host to copy and buffer all bytes, bounded only by guest linear memory, exhausting host memory.

References

Affected packages

Ubuntu:24.04:LTS / rust-wasmtime

Package

Name
rust-wasmtime
Purl
pkg:deb/ubuntu/rust-wasmtime?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

10.*
10.0.1+dfsg-7
15.*
15.0.1+dfsg-4
16.*
16.0.0+dfsg-2
16.0.0+dfsg-3

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "librust-cranelift-dev",
            "binary_version":  "0.103.0+16.0.0+dfsg-3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-115391.json"

Ubuntu:26.10 / rust-wasmtime

Package

Name
rust-wasmtime
Purl
pkg:deb/ubuntu/rust-wasmtime?arch=source&distro=stonking

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

36.*
36.0.5+dfsg-1
36.0.13+dfsg-1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "librust-cranelift-dev",
            "binary_version":  "0.123.13+36.0.13+dfsg-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-115391.json"

Ubuntu:26.04:LTS / rust-wasmtime

Package

Name
rust-wasmtime
Purl
pkg:deb/ubuntu/rust-wasmtime?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

26.*
26.0.1+dfsg-3
26.0.1+dfsg-4
28.*
28.0.1+dfsg-3
29.*
29.0.1+dfsg-5
36.*
36.0.5+dfsg-1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "librust-cranelift-dev",
            "binary_version":  "0.123.5+36.0.5+dfsg-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-115391.json"