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Fencer Vulns
low 3.7

CVE-2026-0988 json

Glib: glib: denial of service via integer overflow in g_buffered_input_stream_peek()

published 2026-01-21 9 mo ago modified 2026-11-06 2 d ago also EUVD-2026-3684

cvss
3.7
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 37%
public exploits
0
none known

Summary

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).

Patch / fix

  • Red Hat Red Hat Hardened Images 2.88.0-1.1.hum1
  • glib2.0 Debian 12 2.74.6-2+deb12u9
  • glib2.0 Debian 13 2.84.4-3~deb13u3
  • glib2.0 Debian 14 2.86.3-5

debian advisories DEBIAN-CVE-2026-0988

  • glib2.0 Ubuntu 22.04 LTS 2.72.4-0ubuntu2.8
  • glib2.0 Ubuntu 24.04 LTS 2.80.0-6ubuntu3.7
  • glib2.0 Ubuntu 25.10 2.86.0-2ubuntu0.2
  • glib2.0 Ubuntu 26.04 LTS 2.87.2-2

ubuntu advisories UBUNTU-CVE-2026-0988

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • glib2 hummingbird 1 2.88.0-1.1.hum1
  • glib2-tests hummingbird 1 2.88.0-1.1.hum1

red hat advisories RHSA-2026:7461

  • glib2 Linux Micro 6.1 2.78.6-slfo.1.1_6.1
  • glib2 Linux Micro 6.0 2.76.2-12.1
  • glib2 SLES for SAP 15 SP5, SLES for SAP 15 SP4, SLES 15 SP5-LTSS +8 more 2.70.5-150400.3.34.1
  • glib2 SLES 16.0, Linux Micro 6.2, SLES for SAP applications 16.0 2.84.4-160000.2.1
  • glib2 SLE Module for Basesystem 15 SP7, openSUSE Leap 15.6 2.78.6-150600.4.28.1
  • glib2 SLE Micro 5.2 2.62.6-150200.3.39.1
  • glib2 SLES LTSS Extended Security 12 SP5 2.48.2-12.55.1

suse advisories SUSE-SU-2026:20493-1SUSE-SU-2026:20446-1SUSE-SU-2026:0458-1SUSE-SU-2026:20210-1SUSE-SU-2026:20221-1SUSE-SU-2026:0286-1

  • glib2 openSUSE Leap 16.0 2.84.4-160000.2.1
  • glib2 openSUSE Tumbleweed 2.86.3-2.1

opensuse advisories openSUSE-SU-2026:20150-1openSUSE-SU-2026:10089-1

  • glib Azure Linux 3.0 2.78.6-9

azure linux advisories AZL-75017

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-0988 updated cvss 3.7

glib: GLib: Denial of Service via Integer Overflow in g_buffered_input_stream_peek()

  • Red Hat Enterprise Linux 6 glib2 Red Hat Enterprise Linux 7 glib2, glib2-fam, glib2-tests Red Hat Enterprise Linux 8 glib2, librsvg2, glib2-fam, glib2-tests, mingw-glib2, mingw32-glib2, +2 more Red Hat Enterprise Linux 9 bootc, glib2, librsvg2, glib2-tests, mingw-glib2, mingw32-glib2, +3 more Red Hat Enterprise Linux 10 bootc, glib2, loupe, papers, rpm-ostree, mingw-glib2, +3 more
    affected: workaround, no fix available “Fix deferred”
  • Red Hat OpenShift AI (RHOAI) rhoai/odh-core-bff-rhel9, rhoai/odh-dashboard-rhel9, rhoai/odh-mod-arch-maas-rhel9, rhoai/odh-mod-arch-automl-rhel9, rhoai/odh-mod-arch-gen-ai-rhel9, rhoai/odh-mod-arch-mlflow-rhel9, +6 more
    under investigation
  • Red Hat Hardened Images glib2 2.88.0-1.1.hum1, glib2-tests 2.88.0-1.1.hum1
    fixed: vendor fix RHSA-2026:7461
  • Red Hat OpenShift AI (RHOAI) rhoai/odh-mlflow-rhel9, rhoai/odh-kube-rbac-proxy-rhel9, rhoai/odh-maas-controller-rhel9, rhoai/odh-mlflow-operator-rhel9, rhoai/odh-model-controller-rhel9, rhoai/odh-ogx-k8s-operator-rhel9, +14 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
9 mo ago

Exploit prediction

0.43% chance of exploitation in the next 30 days, higher than 37% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 3.7 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

Affected products

  • Red Hat Red Hat Hardened Images
  • Red Hat Red Hat Enterprise Linux 10
  • Red Hat Red Hat Enterprise Linux 6
  • Red Hat Red Hat Enterprise Linux 7
  • Red Hat Red Hat Enterprise Linux 8
  • Red Hat Red Hat Enterprise Linux 9
  • Red Hat Red Hat OpenShift AI (RHOAI)

Classification

Weakness
  • CWE-190 Integer Overflow or Wraparound

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.