# Glib: buffer over-read in glib/giochannel.c via "g_io_channel_read_line_backend" CVE record · `CVE-2026-58013` - **Identifiers:** `CVE-2026-58013` - **State:** Confirmed - **Severity:** CVSS 6.5 Medium - **Critical:** No - **CNA:** redhat - **Weakness (CWE):** [CWE-126](https://cwe.mitre.org/data/definitions/126.html) - **Tags:** [CWE-126](https://agentprime.io/advisories/tag/cwe-126.md) - **Technologies:** [GNOME GLib](https://agentprime.io/advisories/technology/gnome-glib.md) · [Red Hat Enterprise Linux 10](https://agentprime.io/advisories/technology/red-hat-enterprise-linux-10.md) · [Red Hat Enterprise Linux 10.0 Extended Update Support](https://agentprime.io/advisories/technology/red-hat-enterprise-linux-10-0-extended-update-support.md) · [Red Hat Enterprise Linux 7 Extended Lifecycle Support](https://agentprime.io/advisories/technology/red-hat-enterprise-linux-7-extended-lifecycle-support.md) · [Red Hat Enterprise Linux 8](https://agentprime.io/advisories/technology/red-hat-enterprise-linux-8.md) · [Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support](https://agentprime.io/advisories/technology/red-hat-enterprise-linux-8-4-advanced-mission-critical-update-support.md) · [Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On](https://agentprime.io/advisories/technology/red-hat-enterprise-linux-8-4-extended-update-support-long-life-add-on.md) · [Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support](https://agentprime.io/advisories/technology/red-hat-enterprise-linux-8-6-advanced-mission-critical-update-support.md) · [Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On](https://agentprime.io/advisories/technology/red-hat-enterprise-linux-8-6-extended-update-support-long-life-add-on.md) · [Red Hat Enterprise Linux 8.8 Telecommunications Update Service](https://agentprime.io/advisories/technology/red-hat-enterprise-linux-8-8-telecommunications-update-service.md) · [Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions](https://agentprime.io/advisories/technology/red-hat-enterprise-linux-8-8-update-services-for-sap-solutions.md) · [Red Hat Enterprise Linux 9](https://agentprime.io/advisories/technology/red-hat-enterprise-linux-9.md) · [Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions](https://agentprime.io/advisories/technology/red-hat-enterprise-linux-9-2-update-services-for-sap-solutions.md) · [Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions](https://agentprime.io/advisories/technology/red-hat-enterprise-linux-9-4-update-services-for-sap-solutions.md) · [Red Hat Enterprise Linux 9.6 Extended Update Support](https://agentprime.io/advisories/technology/red-hat-enterprise-linux-9-6-extended-update-support.md) · [Cert Manager support for Red Hat OpenShift release 1.17](https://agentprime.io/advisories/technology/cert-manager-support-for-red-hat-openshift-release-1-17.md) · [Cert Manager support for Red Hat OpenShift release 1.18](https://agentprime.io/advisories/technology/cert-manager-support-for-red-hat-openshift-release-1-18.md) · [Cert Manager support for Red Hat OpenShift release 1.19](https://agentprime.io/advisories/technology/cert-manager-support-for-red-hat-openshift-release-1-19.md) · [Cert Manager support for Red Hat OpenShift release 1.20](https://agentprime.io/advisories/technology/cert-manager-support-for-red-hat-openshift-release-1-20.md) · [Red Hat AI Inference Server 3.2](https://agentprime.io/advisories/technology/red-hat-ai-inference-server-3-2.md) - **Published:** 30 Jun 2026 - **Updated:** 6 Nov 2026 - **Reviewed by a person:** No Published by the CVE Program (CNA: redhat) at 30 Jun 2026, 12:57 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it. ## Affected products, as the CNA wrote them - Vendor: GNOME. Product: GLib. - affected: `before 2.88.1` (semver) - Other versions: unaffected - Package name: `GLib` - Collection: `https://gitlab.gnome.org/GNOME/glib/` - Vendor: Red Hat. Product: Red Hat Enterprise Linux 10. - unaffected: `0:2.80.4-12.el10_2.21 to before *` (rpm) - Other versions: affected - Package name: `glib2` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Red Hat Enterprise Linux 10.0 Extended Update Support. - unaffected: `0:2.80.4-4.el10_0.17 to before *` (rpm) - Other versions: affected - Package name: `glib2` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Red Hat Enterprise Linux 7 Extended Lifecycle Support. - unaffected: `0:2.56.1-13.el7_9.1 to before *` (rpm) - Other versions: affected - Package name: `glib2` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Red Hat Enterprise Linux 8. - unaffected: `0:2.70.1-9.el8_10 to before *` (rpm) - Other versions: affected - Package name: `mingw-glib2` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Red Hat Enterprise Linux 8. - unaffected: `0:2.56.4-177.el8_10 to before *` (rpm) - Other versions: affected - Package name: `glib2` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support. - unaffected: `0:2.56.4-10.el8_4.7 to before *` (rpm) - Other versions: affected - Package name: `glib2` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On. - unaffected: `0:2.56.4-10.el8_4.7 to before *` (rpm) - Other versions: affected - Package name: `glib2` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support. - unaffected: `0:2.56.4-158.el8_6.7 to before *` (rpm) - Other versions: affected - Package name: `glib2` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On. - unaffected: `0:2.56.4-158.el8_6.7 to before *` (rpm) - Other versions: affected - Package name: `glib2` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Red Hat Enterprise Linux 8.8 Telecommunications Update Service. - unaffected: `0:2.56.4-165.el8_8.2 to before *` (rpm) - Other versions: affected - Package name: `glib2` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions. - unaffected: `0:2.56.4-165.el8_8.2 to before *` (rpm) - Other versions: affected - Package name: `glib2` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Red Hat Enterprise Linux 9. - unaffected: `0:2.68.4-19.el9_8.9 to before *` (rpm) - Other versions: affected - Package name: `glib2` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Red Hat Enterprise Linux 9. - unaffected: `0:2.68.4-19.el9_8.9 to before *` (rpm) - Other versions: affected - Package name: `glib2` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions. - unaffected: `0:2.68.4-7.el9_2.7 to before *` (rpm) - Other versions: affected - Package name: `glib2` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions. - unaffected: `0:2.68.4-14.el9_4.8 to before *` (rpm) - Other versions: affected - Package name: `glib2` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Red Hat Enterprise Linux 9.6 Extended Update Support. - unaffected: `0:2.68.4-16.el9_6.7 to before *` (rpm) - Other versions: affected - Package name: `glib2` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Cert Manager support for Red Hat OpenShift release 1.17. - unaffected: `1791371080 to before *` (rpm) - Other versions: affected - Package name: `cert-manager/jetstack-cert-manager-acmesolver-rhel9` - Collection: `https://catalog.redhat.com/software/containers/` - Vendor: Red Hat. Product: Cert Manager support for Red Hat OpenShift release 1.17. - unaffected: `1791371069 to before *` (rpm) - Other versions: affected - Package name: `cert-manager/jetstack-cert-manager-rhel9` - Collection: `https://catalog.redhat.com/software/containers/` - Vendor: Red Hat. Product: Cert Manager support for Red Hat OpenShift release 1.17. - unaffected: `1791788287 to before *` (rpm) - Other versions: affected - Package name: `cert-manager/cert-manager-operator-rhel9` - Collection: `https://catalog.redhat.com/software/containers/` - Vendor: Red Hat. Product: Cert Manager support for Red Hat OpenShift release 1.17. - unaffected: `1791378395 to before *` (rpm) - Other versions: affected - Package name: `cert-manager/cert-manager-istio-csr-rhel9` - Collection: `https://catalog.redhat.com/software/containers/` - Vendor: Red Hat. Product: Cert Manager support for Red Hat OpenShift release 1.17. - unaffected: `1791970484 to before *` (rpm) - Other versions: affected - Package name: `cert-manager/cert-manager-operator-bundle` - Collection: `https://catalog.redhat.com/software/containers/` - Vendor: Red Hat. Product: Cert Manager support for Red Hat OpenShift release 1.18. - unaffected: `1791459707 to before *` (rpm) - Other versions: affected - Package name: `cert-manager/jetstack-cert-manager-acmesolver-rhel9` - Collection: `https://catalog.redhat.com/software/containers/` - Vendor: Red Hat. Product: Cert Manager support for Red Hat OpenShift release 1.18. - unaffected: `1791459711 to before *` (rpm) - Other versions: affected - Package name: `cert-manager/jetstack-cert-manager-rhel9` - Collection: `https://catalog.redhat.com/software/containers/` - Vendor: Red Hat. Product: Cert Manager support for Red Hat OpenShift release 1.18. - unaffected: `1791459759 to before *` (rpm) - Other versions: affected - Package name: `cert-manager/cert-manager-istio-csr-rhel9` - Collection: `https://catalog.redhat.com/software/containers/` - Vendor: Red Hat. Product: Cert Manager support for Red Hat OpenShift release 1.18. - unaffected: `1789029076 to before *` (rpm) - Other versions: affected - Package name: `cert-manager/cert-manager-operator-rhel9` - Collection: `https://catalog.redhat.com/software/containers/` - Vendor: Red Hat. Product: Cert Manager support for Red Hat OpenShift release 1.18. - unaffected: `1791966259 to before *` (rpm) - Other versions: affected - Package name: `cert-manager/cert-manager-operator-bundle` - Collection: `https://catalog.redhat.com/software/containers/` - Vendor: Red Hat. Product: Cert Manager support for Red Hat OpenShift release 1.19. - unaffected: `1788348522 to before *` (rpm) - Other versions: affected - Package name: `cert-manager/cert-manager-operator-rhel9` - Collection: `https://catalog.redhat.com/software/containers/` - Vendor: Red Hat. Product: Cert Manager support for Red Hat OpenShift release 1.19. - unaffected: `1788348571 to before *` (rpm) - Other versions: affected - Package name: `cert-manager/jetstack-cert-manager-acmesolver-rhel9` - Collection: `https://catalog.redhat.com/software/containers/` - Vendor: Red Hat. Product: Cert Manager support for Red Hat OpenShift release 1.19. - unaffected: `1788348571 to before *` (rpm) - Other versions: affected - Package name: `cert-manager/jetstack-cert-manager-rhel9` - Collection: `https://catalog.redhat.com/software/containers/` - Vendor: Red Hat. Product: Cert Manager support for Red Hat OpenShift release 1.19. - unaffected: `1788348594 to before *` (rpm) - Other versions: affected - Package name: `cert-manager/cert-manager-istio-csr-rhel9` - Collection: `https://catalog.redhat.com/software/containers/` - Vendor: Red Hat. Product: Cert Manager support for Red Hat OpenShift release 1.20. - unaffected: `1790223279 to before *` (rpm) - Other versions: affected - Package name: `cert-manager/jetstack-cert-manager-rhel9` - Collection: `https://catalog.redhat.com/software/containers/` - Vendor: Red Hat. Product: Cert Manager support for Red Hat OpenShift release 1.20. - unaffected: `1790223719 to before *` (rpm) - Other versions: affected - Package name: `cert-manager/cert-manager-istio-csr-rhel9` - Collection: `https://catalog.redhat.com/software/containers/` - Vendor: Red Hat. Product: Cert Manager support for Red Hat OpenShift release 1.20. - unaffected: `1790272426 to before *` (rpm) - Other versions: affected - Package name: `cert-manager/cert-manager-operator-rhel9` - Collection: `https://catalog.redhat.com/software/containers/` - Vendor: Red Hat. Product: Cert Manager support for Red Hat OpenShift release 1.20. - unaffected: `1790589998 to before *` (rpm) - Other versions: affected - Package name: `cert-manager/jetstack-cert-manager-acmesolver-rhel9` - Collection: `https://catalog.redhat.com/software/containers/` - Vendor: Red Hat. Product: Cert Manager support for Red Hat OpenShift release 1.20. - unaffected: `1790589912 to before *` (rpm) - Other versions: affected - Package name: `cert-manager/jetstack-cert-manager-rhel9` - Collection: `https://catalog.redhat.com/software/containers/` - Vendor: Red Hat. Product: Cert Manager support for Red Hat OpenShift release 1.20. - unaffected: `1790589914 to before *` (rpm) - Other versions: affected - Package name: `cert-manager/cert-manager-istio-csr-rhel9` - Collection: `https://catalog.redhat.com/software/containers/` - Vendor: Red Hat. Product: Cert Manager support for Red Hat OpenShift release 1.20. - unaffected: `1790589855 to before *` (rpm) - Other versions: affected - Package name: `cert-manager/cert-manager-operator-rhel9` - Collection: `https://catalog.redhat.com/software/containers/` - Vendor: Red Hat. Product: Cert Manager support for Red Hat OpenShift release 1.20. - unaffected: `1790598593 to before *` (rpm) - Other versions: affected - Package name: `cert-manager/cert-manager-trust-manager-rhel9` - Collection: `https://catalog.redhat.com/software/containers/` - Vendor: Red Hat. Product: Red Hat AI Inference Server 3.2. - unaffected: `1790621714 to before *` (rpm) - Other versions: affected - Package name: `rhaiis/model-opt-cuda-rhel9` - Collection: `https://catalog.redhat.com/software/containers/` And 61 more products. The full list is on the CVE record: ## Not analysed yet We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter. ## Severity and exploitation - 6.5 Medium, CVSS 3.1: `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L`, from CNA (redhat) - **CISA KEV:** Not listed. - **EPSS:** 0.0050, the 43rd percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days. ## Timeline - 30 Jun 2026, 12:57 UTC: [Confirmed by the CVE List](https://www.cve.org/CVERecord?id=CVE-2026-58013) - 30 Jun 2026, 13:19 UTC: [Confirmed by NVD](https://nvd.nist.gov/vuln/detail/CVE-2026-58013) ## Sources - [CVE List: CVE-2026-58013](https://www.cve.org/CVERecord?id=CVE-2026-58013) - [NVD: CVE-2026-58013](https://nvd.nist.gov/vuln/detail/CVE-2026-58013) ### References from the CNA - (vendor-advisory, redhat) - (vendor-advisory, redhat) - (vendor-advisory, redhat) - (vendor-advisory, redhat) - (vendor-advisory, redhat) - (vendor-advisory, redhat) - (vendor-advisory, redhat) - (vendor-advisory, redhat) - (vendor-advisory, redhat) - (vendor-advisory, redhat) - (vendor-advisory, redhat) - (vendor-advisory, redhat) - (vendor-advisory, redhat) - (vendor-advisory, redhat) - (vendor-advisory, redhat) - (vendor-advisory, redhat) - (vendor-advisory, redhat) - (vendor-advisory, redhat) - (vendor-advisory, redhat) - (vendor-advisory, redhat) - (vendor-advisory, redhat) - (vendor-advisory, redhat) - (vendor-advisory, redhat) - (vendor-advisory, redhat) - (vendor-advisory, redhat) - (vendor-advisory, redhat) - (vendor-advisory, redhat) - (vendor-advisory, redhat) - (vendor-advisory, redhat) - (vendor-advisory, redhat) And 48 more on the CVE record. Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description. ## Check whether this affects you This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it. Compare the affected versions above with what you run. - With the agentprime MCP server (), `get_advisory` returns this record and `search_advisories` finds related ones. Setup: - As JSON: - Everything that needs attention now: --- The web page: . Everything for agents: .