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Vulnerability · Published Jun 30, 2026 · Assigned by redhat

CVE-2026-58011Glib: out-of-bounds read in glib/gdatetime.c:g_date_time_get_ymd via invalid gdatetime

Medium 6.5

In plain English

A medium-severity out-of-bounds read in GLib from GNOME. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 41% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)0.5%top 58.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known

Official description

A flaw was found in GLib. An out-of-bounds read of only 2 bytes can occur in the g_date_time_get_ymd function in the glib/gdatetime.c file when an invalid GDateTime object produced by the g_date_time_add_full function is processed. This flaw can corrupt the date output and potentially cause logic errors that may lead to a denial of service.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
AlmaLinux:10glib22.80.4-12.el10_2.21ALSA-2026:57015
AlmaLinux:8glib22.56.4-177.el8_10ALSA-2026:61766
AlmaLinux:9glib22.68.4-19.el9_8.9ALSA-2026:55440
AlmaLinux:10glib2-devel2.80.4-12.el10_2.21ALSA-2026:57015
AlmaLinux:8glib2-devel2.56.4-177.el8_10ALSA-2026:61766
AlmaLinux:9glib2-devel2.68.4-19.el9_8.9ALSA-2026:55440
AlmaLinux:10glib2-doc2.80.4-12.el10_2.21ALSA-2026:57015
AlmaLinux:8glib2-doc2.56.4-177.el8_10ALSA-2026:61766
AlmaLinux:9glib2-doc2.68.4-19.el9_8.9ALSA-2026:55440
AlmaLinux:8glib2-fam2.56.4-177.el8_10ALSA-2026:61766
AlmaLinux:10glib2-static2.80.4-12.el10_2.21ALSA-2026:57015
AlmaLinux:8glib2-static2.56.4-177.el8_10ALSA-2026:61766
AlmaLinux:9glib2-static2.68.4-19.el9_8.9ALSA-2026:55440
AlmaLinux:10glib2-tests2.80.4-12.el10_2.21ALSA-2026:57015
AlmaLinux:8glib2-tests2.56.4-177.el8_10ALSA-2026:61766
AlmaLinux:9glib2-tests2.68.4-19.el9_8.9ALSA-2026:55440
AlmaLinux:8mingw32-glib22.70.1-9.el8_10ALSA-2026:49512
AlmaLinux:8mingw32-glib2-static2.70.1-9.el8_10ALSA-2026:49512
AlmaLinux:8mingw64-glib22.70.1-9.el8_10ALSA-2026:49512
AlmaLinux:8mingw64-glib2-static2.70.1-9.el8_10ALSA-2026:49512
Debian:12glib2.0no fix listedDEBIAN-CVE-2026-58011
Debian:13glib2.02.84.4-3~deb13u4DEBIAN-CVE-2026-58011
Debian:14glib2.02.88.1-2DEBIAN-CVE-2026-58011
Rocky Linux:10glib20:2.80.4-12.el10_2.21RLSA-2026:57015
Rocky Linux:8glib20:2.56.4-177.el8_10RLSA-2026:61766
Rocky Linux:9glib20:2.68.4-19.el9_8.9RLSA-2026:55440
Rocky Linux:8mingw-glib20:2.70.1-9.el8_10RLSA-2026:49512
Ubuntu:22.04:LTSglib2.02.72.4-0ubuntu2.10UBUNTU-CVE-2026-58011
Ubuntu:22.04:LTSglib2.02.72.4-0ubuntu2.10USN-8794-1
Ubuntu:24.04:LTSglib2.02.80.0-6ubuntu3.9UBUNTU-CVE-2026-58011
Ubuntu:24.04:LTSglib2.02.80.0-6ubuntu3.9USN-8794-1
Ubuntu:25.10glib2.0no fix listedUBUNTU-CVE-2026-58011
Ubuntu:26.04:LTSglib2.02.88.0-1ubuntu0.1USN-8794-1
Ubuntu:26.04:LTSglib2.02.88.0-1ubuntu0.1UBUNTU-CVE-2026-58011

Affected products (as reported)

VendorProductVersions
GNOME GLib 0 – before 2.86.50 – before 2.88.1
Red Hat Red Hat Enterprise Linux 10 see references
Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support see references
Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support see references
Red Hat Red Hat Enterprise Linux 8 see references
Red Hat Red Hat Enterprise Linux 8 see references
Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support see references
Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On see references
Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support see references
Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On see references
Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service see references
Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions see references
Red Hat Red Hat Enterprise Linux 9 see references
Red Hat Red Hat Enterprise Linux 9 see references
Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions see references
Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions see references
Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support see references
Red Hat Cert Manager support for Red Hat OpenShift release 1.17 see references
Red Hat Cert Manager support for Red Hat OpenShift release 1.17 see references
Red Hat Cert Manager support for Red Hat OpenShift release 1.17 see references
Red Hat Cert Manager support for Red Hat OpenShift release 1.17 see references
Red Hat Cert Manager support for Red Hat OpenShift release 1.17 see references
Red Hat Cert Manager support for Red Hat OpenShift release 1.18 see references
Red Hat Cert Manager support for Red Hat OpenShift release 1.18 see references
Red Hat Cert Manager support for Red Hat OpenShift release 1.18 see references
Red Hat Cert Manager support for Red Hat OpenShift release 1.18 see references
Red Hat Cert Manager support for Red Hat OpenShift release 1.18 see references
Red Hat Cert Manager support for Red Hat OpenShift release 1.19 see references
Red Hat Cert Manager support for Red Hat OpenShift release 1.19 see references
Red Hat Cert Manager support for Red Hat OpenShift release 1.19 see references

Weakness: CWE-125 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L

References