What’s Vulnerable › Vulnerabilities

CVE-2026-0988: Glib: glib: denial of service via integer overflow in g_buffered_input_stream_peek()

• Severity: low (CVSS 3.7 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-01-21 · updated 2026-06-17
• Weakness: CWE-190

Description

A flaw was found in glib. Missing validation of offset and count parameters in the g_buffered_input_stream_peek() function can lead to an integer overflow during length calculation. When specially crafted values are provided, this overflow results in an incorrect size being passed to memcpy(), triggering a buffer overflow. This can cause application crashes, leading to a Denial of Service (DoS).

Affected products

• Red Hat Enterprise Linux 10: all versions
• Red Hat Enterprise Linux 6: all versions
• Red Hat Enterprise Linux 7: all versions
• Red Hat Enterprise Linux 8: all versions
• Red Hat Enterprise Linux 9: all versions
• Red Hat Hardened Images: all versions — fixed in 2.88.0-1.1.hum1

How to fix

Upgrade to a fixed version: Red Hat Hardened Images 2.88.0-1.1.hum1. Check the vendor advisory for mitigations.

References

• https://access.redhat.com/errata/RHSA-2026:7461
• https://access.redhat.com/security/cve/CVE-2026-0988
• https://bugzilla.redhat.com/show_bug.cgi?id=2429886
• https://gitlab.gnome.org/GNOME/glib/-/issues/3851

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