CVE-2026-80229OpenSSL provider use-after-free

Descripción

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.

Datos: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Se publican tal como los indican las fuentes, en inglés.

Productos y versiones afectados

Referencias y parches

• https://curl.se/docs/CVE-2026-80229.json Vendor Advisory
• https://curl.se/docs/CVE-2026-80229.html PatchVendor Advisory
• https://hackerone.com/reports/3969255 ExploitMitigationThird Party Advisory