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Glib CVE-2025-14512

MEDIUM
Integer Overflow or Wraparound (CWE-190)
2025-12-11 secalert@redhat.com
Integer Overflow Buffer Overflow Glib Openshift Enterprise Linux
6.5
CVSS 3.1 · Vendor: redhat
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Severity by source

Vendor (redhat) PRIMARY
6.5 MEDIUM
AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
SUSE
MEDIUM
qualitative
Red Hat
6.5 MEDIUM
qualitative

Primary rating from Vendor (redhat).

CVSS VectorVendor: redhat

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

Lifecycle Timeline

1
Analysis Generated
Apr 19, 2026 - 20:35 vuln.today

DescriptionCVE.org

A flaw was found in glib. This vulnerability allows a heap buffer overflow and denial-of-service (DoS) via an integer overflow in GLib's GIO (GLib Input/Output) escape_byte_string() function when processing malicious file or remote filesystem attribute values.

AnalysisAI

Integer overflow in GLib's GIO escape_byte_string() function enables heap buffer overflow and denial-of-service when processing malicious filesystem attribute values over the network. The vulnerability affects GLib across GNOME, Red Hat Enterprise Linux 7-10, and OpenShift 4.0+, requiring only unauthenticated network access and user interaction. EPSS score of 0.07% (percentile 22) indicates low exploitation probability despite CVSS 6.5, suggesting the attack requires specific file/attribute handling conditions; no public exploit or active exploitation (CISA KEV) confirmed at analysis time.

Technical ContextAI

GLib is the core utility library used by GNOME and widely deployed across Linux distributions. The vulnerability resides in GIO's escape_byte_string() function, part of the input/output abstraction layer responsible for handling filesystem metadata and remote mount attributes. The root cause is CWE-190 (integer overflow), where integer arithmetic on attribute value lengths fails to validate boundaries before allocation or buffer operations. When crafted malicious attribute values (e.g., extended filesystem attributes, SMB/NFS mount options, or file metadata) are processed, the integer overflow allows an attacker to bypass length checks, resulting in a heap buffer overflow. This affects all GLib versions where this function lacks proper integer sanitization. The network attack vector (AV:N) indicates remote filesystems or network-accessible attribute sources (e.g., SMB, NFS, HTTP-based file services) can trigger exploitation.

RemediationAI

Primary fix: Apply the vendor-released security patch via the distribution's package manager. Red Hat Enterprise Linux users should install the patched glib2 package from RHSA-2026:7461 (advisory URL: https://access.redhat.com/errata/RHSA-2026:7461). GNOME upstream users should upgrade to the patched GLib release available at https://gitlab.gnome.org/GNOME/glib/-/issues/3845. For systems unable to patch immediately, implement network-level mitigations: (1) restrict access to network filesystem protocols (SMB, NFS, WebDAV) to trusted sources only-block unauthorized mount attempts and limit SMB/NFS to internal networks with ACLs; side effect is reduced file sharing flexibility. (2) Disable or restrict GIO-based file managers (Nautilus/GNOME Files) on desktop systems if users do not require network file browsing-reduces exposure surface but limits usability. (3) Monitor system logs for unexpected filesystem attribute access or buffer overflow crashes in GLib-dependent applications (file managers, preview generators, system services); configure SELinux or AppArmor to confine GLib-using processes to prevent lateral movement post-exploitation. Most effective is prompt patching given RHSA advisory availability and low activation barriers (patch is standard distribution maintenance).

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Same weakness CWE-190 – Integer Overflow or Wraparound

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7.5
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7.5
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CVE-2013-3940 CRITICAL
9.3

Same technique Integer Overflow

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9.8
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CVE-2014-0569 CRITICAL POC
9.3
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7.5
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7.5
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8.8

Vendor StatusVendor

SUSE

Severity: Medium
Product Status
Container suse/manager/4.3/proxy-httpd:4.3.16.2.9.73.4 Container suse/sle-micro/base-5.5:2.0.4-5.8.230 Container suse/sle-micro/kvm-5.5:2.0.4-3.5.441 Image SLES15-SP4-BYOS Image SLES15-SP4-BYOS-Azure Image SLES15-SP4-BYOS-EC2 Image SLES15-SP4-BYOS-GCE Image SLES15-SP4-HPC-BYOS Image SLES15-SP4-HPC-BYOS-Azure Image SLES15-SP4-HPC-BYOS-EC2 Image SLES15-SP4-HPC-BYOS-GCE Image SLES15-SP4-HPC-EC2 Image SLES15-SP4-HPC-GCE Image SLES15-SP4-Hardened-BYOS Image SLES15-SP4-Hardened-BYOS-Azure Image SLES15-SP4-Hardened-BYOS-EC2 Image SLES15-SP4-Hardened-BYOS-GCE Image SLES15-SP4-Manager-Server-4-3-BYOS Image SLES15-SP4-Manager-Server-4-3-BYOS-Azure Image SLES15-SP4-Manager-Server-4-3-BYOS-EC2 Image SLES15-SP4-Manager-Server-4-3-BYOS-GCE Image SLES15-SP4-Micro-5-3-BYOS Image SLES15-SP4-Micro-5-3-BYOS-Azure Image SLES15-SP4-Micro-5-4-BYOS Image SLES15-SP4-Micro-5-4-BYOS-Azure Image SLES15-SP5-Azure-3P Image SLES15-SP5-Azure-Basic Image SLES15-SP5-Azure-Standard Image SLES15-SP5-BYOS-Azure Image SLES15-SP5-BYOS-EC2 Image SLES15-SP5-BYOS-GCE Image SLES15-SP5-EC2 Image SLES15-SP5-GCE Image SLES15-SP5-HPC-Azure Image SLES15-SP5-HPC-BYOS-Azure Image SLES15-SP5-HPC-BYOS-EC2 Image SLES15-SP5-HPC-BYOS-GCE Image SLES15-SP5-Hardened-BYOS-Azure Image SLES15-SP5-Hardened-BYOS-EC2 Image SLES15-SP5-Hardened-BYOS-GCE Image SLES15-SP5-Micro-5-5 Image SLES15-SP5-Micro-5-5-Azure Image SLES15-SP5-Micro-5-5-BYOS Image SLES15-SP5-Micro-5-5-BYOS-Azure Image SLES15-SP5-Micro-5-5-EC2 Affected
Container suse/manager/4.3/proxy-salt-broker:4.3.16.2.9.63.4 Affected
Container suse/manager/5.0/x86_64/proxy-httpd:latest Container suse/manager/5.0/x86_64/server:latest Container suse/multi-linux-manager/5.1/x86_64/proxy-httpd:5.1.2.8.15.2 Container suse/multi-linux-manager/5.1/x86_64/proxy-salt-broker:5.1.2.9.13.2 Container suse/multi-linux-manager/5.1/x86_64/server:5.1.2.8.13.2 Image SLES15-SP6 Image SLES15-SP6-Azure-3P Image SLES15-SP6-Azure-Basic Image SLES15-SP6-Azure-Standard Image SLES15-SP6-BYOS Image SLES15-SP6-BYOS-Azure Image SLES15-SP6-BYOS-EC2 Image SLES15-SP6-BYOS-GCE Image SLES15-SP6-CHOST-BYOS Image SLES15-SP6-CHOST-BYOS-Aliyun Image SLES15-SP6-CHOST-BYOS-Azure Image SLES15-SP6-CHOST-BYOS-EC2 Image SLES15-SP6-CHOST-BYOS-GCE Image SLES15-SP6-CHOST-BYOS-GDC Image SLES15-SP6-CHOST-BYOS-SAP-CCloud Image SLES15-SP6-EC2 Image SLES15-SP6-EC2-ECS-HVM Image SLES15-SP6-GCE Image SLES15-SP6-HPC Image SLES15-SP6-HPC-Azure Image SLES15-SP6-HPC-BYOS Image SLES15-SP6-HPC-BYOS-Azure Image SLES15-SP6-HPC-BYOS-EC2 Image SLES15-SP6-HPC-BYOS-GCE Image SLES15-SP6-HPC-EC2 Image SLES15-SP6-HPC-GCE Image SLES15-SP6-Hardened-BYOS Image SLES15-SP6-Hardened-BYOS-Azure Image SLES15-SP6-Hardened-BYOS-EC2 Image SLES15-SP6-Hardened-BYOS-GCE Image SLES15-SP7-Azure-3P Image SLES15-SP7-Azure-Basic Image SLES15-SP7-Azure-Standard Image SLES15-SP7-BYOS-Azure Image SLES15-SP7-BYOS-EC2 Image SLES15-SP7-BYOS-GCE Image SLES15-SP7-CHOST-BYOS-Aliyun Image SLES15-SP7-CHOST-BYOS-Azure Image SLES15-SP7-CHOST-BYOS-EC2 Image SLES15-SP7-CHOST-BYOS-GCE Image SLES15-SP7-CHOST-BYOS-GDC Image SLES15-SP7-CHOST-BYOS-SAP-CCloud Image SLES15-SP7-EC2 Image SLES15-SP7-EC2-ECS-HVM Image SLES15-SP7-GCE Image SLES15-SP7-GCE-3P Image SLES15-SP7-HPC-Azure Image SLES15-SP7-HPC-BYOS-Azure Image SLES15-SP7-HPC-BYOS-EC2 Image SLES15-SP7-HPC-BYOS-GCE Image SLES15-SP7-Hardened-BYOS-Azure Image SLES15-SP7-Hardened-BYOS-EC2 Image SLES15-SP7-Hardened-BYOS-GCE Image proxy-httpd-image Image server-image Affected
Container suse/manager/5.0/x86_64/proxy-salt-broker:latest Container suse/manager/5.0/x86_64/server-attestation:latest Container suse/manager/5.0/x86_64/server-hub-xmlrpc-api:latest Container suse/multi-linux-manager/5.1/x86_64/server-hub-xmlrpc-api:5.1.2.8.13.1 Container suse/multi-linux-manager/5.1/x86_64/server-saline:5.1.2.9.13.1 Image proxy-salt-broker-image Image server-hub-xmlrpc-api-image Image server-saline-image Affected
Container suse/sl-micro/6.0/baremetal-os-container:2.1.3-6.115 Container suse/sl-micro/6.0/base-os-container:2.1.3-7.81 Container suse/sl-micro/6.0/kvm-os-container:2.1.3-6.102 Container suse/sl-micro/6.0/rt-os-container:2.1.3-7.117 Image SL-Micro Image SLE-Micro Image SLE-Micro-Azure Image SLE-Micro-BYOS Image SLE-Micro-BYOS-Azure Image SLE-Micro-BYOS-EC2 Image SLE-Micro-BYOS-GCE Image SLE-Micro-EC2 Image SLE-Micro-GCE Affected

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CVE-2025-14512 vulnerability details – vuln.today
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