CVE-2026-80229

Name	CVE-2026-80229
Description	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.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
curl (PTS)	bookworm	7.88.1-10+deb12u15	fixed
	bookworm (security)	7.88.1-10+deb12u5	fixed
	trixie	8.14.1-2+deb13u5	vulnerable
	forky	8.21.0-2	vulnerable
	sid	8.22.0-1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
curl	source	bookworm	(not affected)
curl	source	(unstable)	8.22.0~rc3-1

Notes

[trixie] - curl <no-dsa> (Minor issue)
[bookworm] - curl <not-affected> (Vulnerable code introduced later)
https://curl.se/docs/CVE-2026-80229.html
Introduced with: https://github.com/curl/curl/commit/f2ce6c46b9dcc46ced0ce43fa95176ea7599a854 (rc-8_14_0-1)
Fixed by: https://github.com/curl/curl/commit/7ea37abc6ac0120ba5f6d94be8d196f7cf1506bb (rc-8_22_0-3)