Bug 2459282 - CVE-2026-40170 ngtcp2: ngtcp2: Denial of service via stack buffer overflow during QUIC handshake [epel-all]
Summary: CVE-2026-40170 ngtcp2: ngtcp2: Denial of service via stack buffer overflow du...
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Fedora EPEL
Classification: Fedora
Component: ngtcp2
Version: epel10
Hardware: Unspecified
OS: Unspecified
high
high
Target Milestone: ---
Assignee: Petr Menšík
QA Contact:
URL:
Whiteboard: {"flaws": ["443e0f07-54d3-45d9-99ce-4...
Depends On:
Blocks: CVE-2026-40170
TreeView+ depends on / blocked
 
Reported: 2026-04-17 20:15 UTC by Marco Benatto
Modified: 2026-04-30 01:29 UTC (History)
4 users (show)

Fixed In Version: ngtcp2-1.22.1-1.el9 ngtcp2-1.22.1-1.el10_3
Clone Of:
Environment:
Last Closed: 2026-04-30 01:17:46 UTC
Type: ---
Embargoed:

Attachments (Terms of Use)

Description Marco Benatto 2026-04-17 20:15:07 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 2026-04-20 14:31:53 UTC 
FEDORA-EPEL-2026-146c20fe60 (ngtcp2-1.22.1-1.el10_3) has been submitted as an update to Fedora EPEL 10.3.
https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-146c20fe60
Comment 2 Fedora Update System 2026-04-20 14:32:30 UTC 
FEDORA-EPEL-2026-fca0ff7545 (ngtcp2-1.22.1-1.el9) has been submitted as an update to Fedora EPEL 9.
https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-fca0ff7545
Comment 3 Fedora Update System 2026-04-22 10:18:28 UTC 
FEDORA-EPEL-2026-146c20fe60 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-2026-146c20fe60

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.
Comment 4 Fedora Update System 2026-04-22 10:23:20 UTC 
FEDORA-EPEL-2026-fca0ff7545 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-fca0ff7545

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.
Comment 5 Fedora Update System 2026-04-30 01:17:46 UTC 
FEDORA-EPEL-2026-fca0ff7545 (ngtcp2-1.22.1-1.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 6 Fedora Update System 2026-04-30 01:29:31 UTC 
FEDORA-EPEL-2026-146c20fe60 (ngtcp2-1.22.1-1.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.
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