Bug 2492033 - CVE-2026-56114 dhcpcd: dhcpcd: Denial of Service due to stack out-of-bounds write via crafted DHCPv6 message [fedora-all]
Summary: CVE-2026-56114 dhcpcd: dhcpcd: Denial of Service due to stack out-of-bounds w...
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Fedora
Classification: Fedora
Component: dhcpcd
Version: 45
Hardware: Unspecified
OS: Unspecified
medium
medium
Target Milestone: ---
Assignee: Petr Menšík
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard: {"flaws": ["64c79114-f7b1-4c67-b9e9-a...
Depends On:
Blocks: CVE-2026-56114
TreeView+ depends on / blocked
 
Reported: 2026-06-23 22:41 UTC by Ganesh
Modified: 2026-11-05 01:02 UTC (History)
3 users (show)

Fixed In Version: dhcpcd-10.5.2-2.fc45
Clone Of:
Environment:
Last Closed: 2026-11-05 01:02:50 UTC
Type: ---
Embargoed:


Attachments (Terms of Use)

Description Ganesh 2026-06-23 22:41:35 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 Aoife Moloney 2026-08-17 14:58:04 UTC
This bug appears to have been reported against 'rawhide' during the Fedora Linux 45 development cycle.
Changing version to 45.

Comment 2 Fedora Update System 2026-10-01 07:52:44 UTC
FEDORA-2026-f6c24b91ee (dhcpcd-10.5.2-1.fc45) has been submitted as an update to Fedora 45.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-f6c24b91ee

Comment 3 Fedora Update System 2026-10-01 07:54:14 UTC
FEDORA-2026-c39845b961 (dhcpcd-10.5.2-1.fc44) has been submitted as an update to Fedora 44.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-c39845b961

Comment 4 Fedora Update System 2026-10-01 07:55:54 UTC
FEDORA-2026-cf9ac55adc (dhcpcd-10.5.2-1.fc43) has been submitted as an update to Fedora 43.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-cf9ac55adc

Comment 5 Fedora Update System 2026-10-02 02:17:02 UTC
FEDORA-2026-cf9ac55adc 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-cf9ac55adc`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-cf9ac55adc

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

Comment 6 Fedora Update System 2026-10-02 02:36:14 UTC
FEDORA-2026-f6c24b91ee 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-f6c24b91ee`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-f6c24b91ee

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

Comment 7 Fedora Update System 2026-10-02 02:52:24 UTC
FEDORA-2026-c39845b961 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-c39845b961`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-c39845b961

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

Comment 8 Fedora Update System 2026-10-30 07:34:24 UTC
FEDORA-2026-c36b5fc4ca (dhcpcd-10.5.2-2.fc45) has been submitted as an update to Fedora 45.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-c36b5fc4ca

Comment 9 Fedora Update System 2026-10-30 08:14:34 UTC
FEDORA-2026-77541e35f9 (dhcpcd-10.5.2-2.fc44) has been submitted as an update to Fedora 44.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-77541e35f9

Comment 10 Fedora Update System 2026-10-30 08:57:12 UTC
FEDORA-2026-1201e2555d (dhcpcd-10.5.2-2.fc43) has been submitted as an update to Fedora 43.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-1201e2555d

Comment 11 Fedora Update System 2026-10-31 02:43:26 UTC
FEDORA-2026-1201e2555d 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-2026-1201e2555d`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-1201e2555d

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

Comment 12 Fedora Update System 2026-10-31 03:02:45 UTC
FEDORA-2026-77541e35f9 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-2026-77541e35f9`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-77541e35f9

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

Comment 13 Fedora Update System 2026-10-31 05:13:06 UTC
FEDORA-2026-c36b5fc4ca 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-c36b5fc4ca`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-c36b5fc4ca

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

Comment 14 Fedora Update System 2026-11-05 01:02:50 UTC
FEDORA-2026-c36b5fc4ca (dhcpcd-10.5.2-2.fc45) has been pushed to the Fedora 45 stable repository.
If problem still persists, please make note of it in this bug report.


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