Bug 2491729

Summary:	CVE-2026-55199 libssh2: libssh2: Denial of Service via crafted SSH_MSG_EXT_INFO message [epel-all]
Product:	[Fedora] Fedora EPEL	Reporter:	Srikanth Balasubramanian <sbalasub>
Component:	libssh2	Assignee:	Paul Howarth <paul>
Status:	CLOSED ERRATA	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	epel10	CC:	kdudka, paul
Target Milestone:	---	Keywords:	Security, SecurityTracking
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:	{"flaws": ["4366f5f9-a272-45c8-9a22-2472dd4d8a77"]}
Fixed In Version:	libssh2-1.11.1-9.el9 libssh2-1.11.1-9.el10_2 libssh2-1.11.1-9.el10_3	Doc Type:	---
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2026-07-05 00:27:53 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:	2490128

Description Srikanth Balasubramanian 2026-06-23 13:38:05 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.

Comment 1 Fedora Update System 2026-06-24 17:42:35 UTC

FEDORA-EPEL-2026-22a2204f6e (libssh2-1.11.1-8.el9) has been submitted as an update to Fedora EPEL 9.
https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-22a2204f6e

Comment 2 Fedora Update System 2026-06-24 17:42:35 UTC

FEDORA-EPEL-2026-f70a417c22 (libssh2-1.11.1-8.el10_2) has been submitted as an update to Fedora EPEL 10.2.
https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-f70a417c22

Comment 3 Fedora Update System 2026-06-24 17:42:35 UTC

FEDORA-EPEL-2026-4ba0583f78 (libssh2-1.11.1-8.el10_3) has been submitted as an update to Fedora EPEL 10.3.
https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-4ba0583f78

Comment 4 Fedora Update System 2026-06-25 16:35:26 UTC

FEDORA-EPEL-2026-4ba0583f78 has been pushed to the Fedora EPEL 10.3 testing repository.

You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-4ba0583f78

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

Comment 5 Fedora Update System 2026-06-25 16:41:03 UTC

FEDORA-EPEL-2026-22a2204f6e has been pushed to the Fedora EPEL 9 testing repository.

You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-22a2204f6e

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

Comment 6 Fedora Update System 2026-06-25 16:42:24 UTC

FEDORA-EPEL-2026-f70a417c22 has been pushed to the Fedora EPEL 10.2 testing repository.

You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-f70a417c22

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

Comment 7 Fedora Update System 2026-06-27 01:21:51 UTC

FEDORA-EPEL-2026-22a2204f6e has been pushed to the Fedora EPEL 9 testing repository.

You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-22a2204f6e

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

Comment 8 Fedora Update System 2026-06-27 01:31:15 UTC

FEDORA-EPEL-2026-f70a417c22 has been pushed to the Fedora EPEL 10.2 testing repository.

You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-f70a417c22

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

Comment 9 Fedora Update System 2026-06-27 01:42:23 UTC

FEDORA-EPEL-2026-4ba0583f78 has been pushed to the Fedora EPEL 10.3 testing repository.

You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-4ba0583f78

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

Comment 10 Fedora Update System 2026-07-05 00:27:53 UTC

FEDORA-EPEL-2026-22a2204f6e (libssh2-1.11.1-9.el9) has been pushed to the Fedora EPEL 9 stable repository.
If problem still persists, please make note of it in this bug report.

Comment 11 Fedora Update System 2026-07-05 00:39:16 UTC

FEDORA-EPEL-2026-f70a417c22 (libssh2-1.11.1-9.el10_2) has been pushed to the Fedora EPEL 10.2 stable repository.
If problem still persists, please make note of it in this bug report.

Comment 12 Fedora Update System 2026-07-05 00:58:17 UTC

FEDORA-EPEL-2026-4ba0583f78 (libssh2-1.11.1-9.el10_3) has been pushed to the Fedora EPEL 10.3 stable repository.
If problem still persists, please make note of it in this bug report.