Bug 2494867 - CVE-2026-58010 mingw-glib2: buffer over-read in glib/gvariant-serialiser.c via gvs_tuple_is_normal() [fedora-all]
Summary: CVE-2026-58010 mingw-glib2: buffer over-read in glib/gvariant-serialiser.c vi...
Keywords:
Status: ON_QA
Alias: None
Product: Fedora
Classification: Fedora
Component: mingw-glib2
Version: rawhide
Hardware: Unspecified
OS: Unspecified
medium
medium
Target Milestone: ---
Assignee: Kalev Lember
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard: {"flaws": ["30401a73-6694-4570-9292-1...
Depends On:
Blocks: CVE-2026-58010
TreeView+ depends on / blocked
 
Reported: 2026-06-30 12:57 UTC by Guilherme de Almeida Suckevicz
Modified: 2026-07-09 01:45 UTC (History)
5 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Type: ---
Embargoed:


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Description Guilherme de Almeida Suckevicz 2026-06-30 12:57:23 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.

gvs_tuple_is_normal() in glib/gvariant-serialiser.c:1253 has an off-by-one error in its alignment padding check. When checking whether padding bytes are zero, the bounds check uses > instead of >=, allowing a 1-byte out-of-bounds read when offset == value.size.

Comment 1 Fedora Update System 2026-07-02 17:12:10 UTC
FEDORA-2026-825932ea60 (mingw-glib2-2.86.5-1.fc43) has been submitted as an update to Fedora 43.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-825932ea60

Comment 2 Fedora Update System 2026-07-02 17:13:16 UTC
FEDORA-2026-5a55313adb (mingw-glib2-2.88.2-1.fc44) has been submitted as an update to Fedora 44.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-5a55313adb

Comment 3 Fedora Update System 2026-07-03 01:26:19 UTC
FEDORA-2026-5a55313adb 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-2026-5a55313adb`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-5a55313adb

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

Comment 4 Fedora Update System 2026-07-03 01:47:31 UTC
FEDORA-2026-825932ea60 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-2026-825932ea60`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-825932ea60

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

Comment 5 Fedora Update System 2026-07-09 01:27:07 UTC
FEDORA-2026-8e39f35701 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-2026-8e39f35701`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-8e39f35701

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

Comment 6 Fedora Update System 2026-07-09 01:45:43 UTC
FEDORA-2026-7bf2937528 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-2026-7bf2937528`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-7bf2937528

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


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