UBUNTU-CVE-2026-80229

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Source
https://ubuntu.com/security/CVE-2026-80229
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-80229.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-80229
Upstream
Published
2026-09-06T18:17:00Z
Modified
2026-09-16T11:41:47Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

When performing transfers via libcurl’s multi interface, pooled TLS connections can outlive their originating easy handles. In OpenSSL 3 provider configurations, libcurl attaches an allocated library context to the easy handle's state and passes it to OpenSSL without acquiring an ownership reference; destroying the easy handle prematurely frees this context while the active connection retains a dangling pointer, leading to a heap-use-after-free upon subsequent I/O or post-handshake operations.

References

Affected packages

Ubuntu:26.04:LTS / curl

Package

Name
curl
Purl
pkg:deb/ubuntu/curl?arch=source&distro=resolute

Affected ranges

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

Affected versions

8.*
8.14.1-2ubuntu1
8.17.0-1ubuntu1
8.18.0-1ubuntu1
8.18.0-1ubuntu2
8.18.0-1ubuntu2.1
8.18.0-1ubuntu2.2
8.18.0-1ubuntu2.3
8.18.0-1ubuntu2.4
8.18.0-1ubuntu2.5

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "curl",
            "binary_version":  "8.18.0-1ubuntu2.5"
        },
        {
            "binary_name":  "libcurl3t64-gnutls",
            "binary_version":  "8.18.0-1ubuntu2.5"
        },
        {
            "binary_name":  "libcurl4t64",
            "binary_version":  "8.18.0-1ubuntu2.5"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-80229.json"