UBUNTU-CVE-2026-108266

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Source
https://ubuntu.com/security/CVE-2026-108266
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-108266.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-108266
Upstream
Published
2026-10-13T00:00:00Z
Modified
2026-10-14T03:22:50Z
Severity
  • 9.1 (Critical) CVSS_V4 - CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

Privasys rustls is a maintained fork of the rustls TLS library that adds RA-TLS challenge and channel-binding support. Prior to privasys-v0.8.1, the fork emitted RA-TLS challenge certificates whose quote ReportData was bound to the certificate public key and client nonce but not to the active TLS session. An attacker who obtained an enclave TLS private key could relay a genuine quote onto another connection, causing a relying party to accept an attacker-terminated connection as the attested enclave. This issue is fixed in privasys-v0.8.1.

References

Affected packages

Ubuntu:24.04:LTS / rust-rustls

Package

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

Affected ranges

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

Affected versions

0.*
0.21.6-3
0.21.7-1
0.21.9-1
0.21.10-1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "librust-rustls-dev",
            "binary_version":  "0.21.10-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-108266.json"

Ubuntu:26.04:LTS / rust-rustls

Package

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

Affected ranges

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

Affected versions

0.*
0.23.26+ds-1
0.23.33+ds-3build2
0.23.35+ds-1
0.23.35+ds-1build1
0.23.36+ds-1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "librust-rustls-dev",
            "binary_version":  "0.23.36+ds-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-108266.json"