Bug 2429913 - CVE-2026-0988 glib2: GLib: Denial of Service via Integer Overflow in g_buffered_input_stream_peek() [fedora-43]
Summary: CVE-2026-0988 glib2: GLib: Denial of Service via Integer Overflow in g_buffer...
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Fedora
Classification: Fedora
Component: glib2
Version: 43
Hardware: Unspecified
OS: Unspecified
medium
medium
Target Milestone: ---
Assignee: Matthias Clasen
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard: {"flaws": ["f04bf282-f361-4939-b207-e...
Depends On:
Blocks: CVE-2026-0988
TreeView+ depends on / blocked
 
Reported: 2026-01-15 11:38 UTC by Abhishek Raj
Modified: 2026-03-21 00:55 UTC (History)
5 users (show)

Fixed In Version: glib2-2.87.1-1.fc44 glib2-2.86.4-2.fc43
Clone Of:
Environment:
Last Closed: 2026-03-21 00:55:20 UTC
Type: ---
Embargoed:

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System ID Private Priority Status Summary Last Updated
GNOME Gitlab GNOME glib issues 3851 0 None closed (CVE-2026-0988) Integer overflow in `g_buffered_input_stream_peek()` leads to segmentation fault 2026-03-19 09:45:10 UTC

Description Abhishek Raj 2026-01-15 11:38:58 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 Milan Crha 2026-03-19 09:45:11 UTC 
An upstream fix landed for 2.87.1 according to https://gitlab.gnome.org/GNOME/glib/-/issues/3851 . I'll backport it to f43.
Comment 2 Fedora Update System 2026-03-19 10:10:46 UTC 
FEDORA-2026-5637749c07 (glib2-2.86.4-2.fc43) has been submitted as an update to Fedora 43.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-5637749c07
Comment 3 Fedora Update System 2026-03-20 02:07:49 UTC 
FEDORA-2026-5637749c07 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-2026-5637749c07`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-5637749c07

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.
Comment 4 Fedora Update System 2026-03-21 00:55:20 UTC 
FEDORA-2026-5637749c07 (glib2-2.86.4-2.fc43) has been pushed to the Fedora 43 stable repository.
If problem still persists, please make note of it in this bug report.
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