A flaw was found in GLib.
CVE-2026-58010
A flaw was found in GLib. An off-by-one error can occur in the gvstupleisnormal 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.
Assessment
- CVSS
- 6.5 (v3.1)
- Severity
- Medium
- EPSS
- 0.49% chance of exploitation in the next 30 days
- Known exploited
- Not listed in CISA KEV
- Exploit availability
- Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
- Published
- 30 June 2026
- Last updated
- 5 November 2026
- Affected
- Gnome · Red Hat · Cert Manager support for Red Hat OpenShift release 1.17 · Cert Manager support for Red Hat OpenShift release 1.18 · Cert Manager support for Red Hat OpenShift release 1.19 · Cert Manager support for Red Hat OpenShift release 1.20
- Assigner
- redhat
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
At the source
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/errata/RHSA-2026:58981
- https://access.redhat.com/errata/RHSA-2026:61766
- https://access.redhat.com/errata/RHSA-2026:61783
- https://access.redhat.com/errata/RHSA-2026:63135
- https://access.redhat.com/errata/RHSA-2026:63138
- https://access.redhat.com/errata/RHSA-2026:63140
- https://access.redhat.com/errata/RHSA-2026:65762
- https://access.redhat.com/errata/RHSA-2026:65763
- https://access.redhat.com/errata/RHSA-2026:65767
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