CVE-2026-58010

Medium

Description

A flaw was found in GLib. An off-by-one error can occur in the gvs_tuple_is_normal function in the glib/gvariant-serialiser.c file when doing an alignment padding check because the bounds check uses > instead of >=, causing an out-of-bounds read of only 1 byte. This issue can cause a minor information disclosure of 1 byte and a denial of service when the out-of-bounds read crosses a page boundary.

SeverityMedium

CVSS6.5

Exploit probability—

Product

Gnome Glib

PublishedJun 30, 2026

First seenJun 30, 2026

Weakness typeCWE-126CWE-126

How to fix

Update

gnome glib2.86.5 or later

Vendor advisories

Affected products

Product	Affected versions	Fixed in
gnome glib	v < 2.86.5, 2.88.0	2.86.5
redhat enterprise_linux	6.0, 7.0, 8.0, 9.0, 10.0	—

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