Bug 2537381

Summary:	CVE-2026-80229 curl: libcurl: Memory corruption vulnerability via OpenSSL 3 provider use-after-free [fedora-all]
Product:	[Fedora] Fedora	Reporter:	Srikanth Balasubramanian <sbalasub>
Component:	curl	Assignee:	Jan Macku <jamacku>
Status:	CLOSED ERRATA	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	low	Docs Contact:
Priority:	low
Version:	rawhide	CC:	jamacku, jmigacz, kdudka, lzaoral, msekleta, paul, vmihalko
Target Milestone:	---	Keywords:	Security, SecurityTracking
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:	{"flaws": ["2dfea80a-8e8b-43a0-8452-d7602e8636ef"]}
Fixed In Version:	curl-8.18.0-12.fc44 curl-8.15.0-12.fc43	Doc Type:	---
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2026-10-08 01:16:32 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	2529206

Description Srikanth Balasubramanian 2026-09-21 13:22:54 UTC

Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

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.

Comment 1 Fedora Update System 2026-10-06 08:56:13 UTC

FEDORA-2026-c2d4a9aa16 (curl-8.21.0-7.fc45) has been submitted as an update to Fedora 45.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-c2d4a9aa16

Comment 2 Fedora Update System 2026-10-06 13:53:29 UTC

FEDORA-2026-8efcd7a2a0 (curl-8.18.0-12.fc44) has been submitted as an update to Fedora 44.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-8efcd7a2a0

Comment 3 Fedora Update System 2026-10-07 01:59:27 UTC

FEDORA-2026-c2d4a9aa16 has been pushed to the Fedora 45 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-c2d4a9aa16`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-c2d4a9aa16

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 4 Fedora Update System 2026-10-07 02:27:56 UTC

FEDORA-2026-8efcd7a2a0 has been pushed to the Fedora 44 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-8efcd7a2a0`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-8efcd7a2a0

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 5 Fedora Update System 2026-10-07 12:02:50 UTC

FEDORA-2026-3ea898ea77 (curl-8.15.0-11.fc43) has been submitted as an update to Fedora 43.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-3ea898ea77

Comment 6 Fedora Update System 2026-10-08 01:16:32 UTC

FEDORA-2026-8efcd7a2a0 (curl-8.18.0-12.fc44) has been pushed to the Fedora 44 stable repository.
If problem still persists, please make note of it in this bug report.

Comment 7 Fedora Update System 2026-10-08 03:01:20 UTC

FEDORA-2026-3ea898ea77 has been pushed to the Fedora 43 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-3ea898ea77`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-3ea898ea77

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 8 Fedora Update System 2026-10-16 21:14:33 UTC

FEDORA-2026-d65da12723 has been pushed to the Fedora 43 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-d65da12723`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-d65da12723

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 9 Fedora Update System 2026-10-20 05:06:30 UTC

FEDORA-2026-d65da12723 (curl-8.15.0-12.fc43) has been pushed to the Fedora 43 stable repository.
If problem still persists, please make note of it in this bug report.