UBUNTU-CVE-2026-80229

    Dashboard / Vulnerabilities / UBUNTU-CVE-2026-80229

    UBUNTU-CVE-2026-80229

    Published: 6 Sept 2026Last Modified: 26 Sept 2026
    Upstream:
    CVE-2026-80229
    Aliases:
    USN-8820-1

    Summary:

    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: https://ubuntu.com/security/CVE-2026-80229, https://www.cve.org/CVERecord?id=CVE-2026-80229, https://curl.se/docs/CVE-2026-80229.html, https://github.com/curl/curl/commit/7ea37abc6ac0120ba5f6d9, https://ubuntu.com/security/notices/USN-8820-1

    Affected packages

    Package

    Name: curl

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

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -8.18.0-1ubuntu2.7

    Affected versions

    8.14.1-2ubuntu1

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    UBUNTU-CVE-2026-80229 | CVE-DB