Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Gnome | Glib | < 2.86.5 |
| Redhat | Enterprise Linux | 6.0 |
Related Weaknesses (CWE)
References
- https://access.redhat.com/errata/RHSA-2026:49512
- https://access.redhat.com/errata/RHSA-2026:55440
- https://access.redhat.com/errata/RHSA-2026:57015
- https://access.redhat.com/security/cve/CVE-2026-58010Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2492243Issue TrackingThird Party Advisory
- https://gitlab.gnome.org/GNOME/glib/-/issues/3915ExploitIssue TrackingVendor Advisory
FAQ
What is CVE-2026-58010?
CVE-2026-58010 is a vulnerability with a CVSS score of 6.5 (MEDIUM). 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 >...
How severe is CVE-2026-58010?
CVE-2026-58010 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-58010?
Check the references section above for vendor advisories and patch information. Affected products include: Gnome Glib, Redhat Enterprise Linux.