CVE-2026-58010Glib: buffer over-read in glib/gvariant-serialiser.c via gvs_tuple_is_normal()

Description

A flaw was found in GLib. An off-by-one error can occur in the gvs_tuple_is_normal function in the glib/gvariant-serialiser.c file when doing an alignment padding check because the bounds check uses > instead of >=, causing an out-of-bounds read of only 1 byte. This issue can cause a minor information disclosure of 1 byte and a denial of service when the out-of-bounds read crosses a page boundary.

Timeline

Scores

EPSS (exploitation in 30 days)

0.49% · top 57% of all CVEs (14 Nov 2026)

CISA SSVC

Exploitation: none · Automatable: yes · Technical impact: partial

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.5.

Affected products

• GNOME · GLib

  • affected < 2.86.5
  • affected < 2.88.1

• Red Hat · Red Hat Enterprise Linux 10

  • unaffected 0:2.80.4-12.el10_2.21 – < *

• Red Hat · Red Hat Enterprise Linux 10

  • unaffected 0:2.89.2-1.el10 – < *

• Red Hat · Red Hat Enterprise Linux 10.0 Extended Update Support

  • unaffected 0:2.80.4-4.el10_0.17 – < *

• Red Hat · Red Hat Enterprise Linux 7 Extended Lifecycle Support

  • unaffected 0:2.56.1-13.el7_9.1 – < *

• Red Hat · Red Hat Enterprise Linux 8

  • unaffected 0:2.70.1-9.el8_10 – < *

• Red Hat · Red Hat Enterprise Linux 8

  • unaffected 0:2.56.4-177.el8_10 – < *

• Red Hat · Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support

  • unaffected 0:2.56.4-10.el8_4.7 – < *

• Red Hat · Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On

  • unaffected 0:2.56.4-10.el8_4.7 – < *

• Red Hat · Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support

  • unaffected 0:2.56.4-158.el8_6.7 – < *

• Red Hat · Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On

  • unaffected 0:2.56.4-158.el8_6.7 – < *

• Red Hat · Red Hat Enterprise Linux 8.8 Telecommunications Update Service

  • unaffected 0:2.56.4-165.el8_8.2 – < *

• Red Hat · Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions

  • unaffected 0:2.56.4-165.el8_8.2 – < *

• Red Hat · Red Hat Enterprise Linux 9

  • unaffected 0:2.68.4-19.el9_8.9 – < *

• Red Hat · Red Hat Enterprise Linux 9

  • unaffected 0:2.68.4-19.el9_8.9 – < *

• Red Hat · Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

  • unaffected 0:2.68.4-7.el9_2.7 – < *

• Red Hat · Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions

  • unaffected 0:2.68.4-14.el9_4.8 – < *

• Red Hat · Red Hat Enterprise Linux 9.6 Extended Update Support

  • unaffected 0:2.68.4-16.el9_6.7 – < *

• Red Hat · Cert Manager support for Red Hat OpenShift release 1.17

  • unaffected 1791371080 – < *

• Red Hat · Cert Manager support for Red Hat OpenShift release 1.17

  • unaffected 1791371069 – < *

• Red Hat · Cert Manager support for Red Hat OpenShift release 1.17

  • unaffected 1791788287 – < *

• Red Hat · Cert Manager support for Red Hat OpenShift release 1.17

  • unaffected 1791378395 – < *

• Red Hat · Cert Manager support for Red Hat OpenShift release 1.17

  • unaffected 1791970484 – < *

• Red Hat · Cert Manager support for Red Hat OpenShift release 1.18

  • unaffected 1791459707 – < *

• Red Hat · Cert Manager support for Red Hat OpenShift release 1.18

  • unaffected 1791459711 – < *

• Red Hat · Cert Manager support for Red Hat OpenShift release 1.18

  • unaffected 1791459759 – < *

• Red Hat · Cert Manager support for Red Hat OpenShift release 1.18

  • unaffected 1789029076 – < *

• Red Hat · Cert Manager support for Red Hat OpenShift release 1.18

  • unaffected 1791966259 – < *

• Red Hat · Cert Manager support for Red Hat OpenShift release 1.19

  • unaffected 1788348522 – < *

• Red Hat · Cert Manager support for Red Hat OpenShift release 1.19

  • unaffected 1788348571 – < *

• Red Hat · Cert Manager support for Red Hat OpenShift release 1.19

  • unaffected 1788348571 – < *

• Red Hat · Cert Manager support for Red Hat OpenShift release 1.19

  • unaffected 1788348594 – < *

• Red Hat · Cert Manager support for Red Hat OpenShift release 1.20

  • unaffected 1790223279 – < *

• Red Hat · Cert Manager support for Red Hat OpenShift release 1.20

  • unaffected 1790223719 – < *

• Red Hat · Cert Manager support for Red Hat OpenShift release 1.20

  • unaffected 1790272426 – < *

• Red Hat · Cert Manager support for Red Hat OpenShift release 1.20

  • unaffected 1790589998 – < *

• Red Hat · Cert Manager support for Red Hat OpenShift release 1.20

  • unaffected 1790589912 – < *

• Red Hat · Cert Manager support for Red Hat OpenShift release 1.20

  • unaffected 1790589914 – < *

• Red Hat · Cert Manager support for Red Hat OpenShift release 1.20

  • unaffected 1790589855 – < *

• Red Hat · Cert Manager support for Red Hat OpenShift release 1.20

  • unaffected 1790598593 – < *

• Red Hat · Red Hat AI Inference Server 3.2

  • unaffected 1790621714 – < *

• Red Hat · Red Hat AI Inference Server 3.2

  • unaffected 1790621718 – < *

• Red Hat · Red Hat AI Inference Server 3.2

  • unaffected 1790621713 – < *

• Red Hat · Red Hat AI Inference Server 3.5

  • unaffected 1791425869 – < *

• Red Hat · Red Hat AI Inference Server 3.5

  • unaffected 1791427182 – < *

• Red Hat · Red Hat AI Inference Server 3.5

  • unaffected 1791803821 – < *

• Red Hat · Red Hat AI Inference Server 3.5

  • unaffected 1791473631 – < *

• Red Hat · Red Hat AI Inference Server 3.5

  • unaffected 1791818357 – < *

• Red Hat · Red Hat AI Inference Server 3.5

  • unaffected 1791473614 – < *

• Red Hat · Red Hat Discovery 2

  • unaffected 1788205779 – < *

• Red Hat · Red Hat Discovery 2

  • unaffected 1788206196 – < *

• Red Hat · Red Hat Enterprise Linux AI 3.5

  • unaffected 1793206758 – < *

• Red Hat · Red Hat Enterprise Linux AI 3.5

  • unaffected 1793194817 – < *

• Red Hat · Red Hat Enterprise Linux AI 3.5

  • unaffected 1793194815 – < *

• Red Hat · Red Hat Enterprise Linux AI 3.5

  • unaffected 1793194834 – < *

• Red Hat · Red Hat Enterprise Linux AI 3.5

  • unaffected 1793135861 – < *

• Red Hat · Red Hat Enterprise Linux AI 3.5

  • unaffected 1793194815 – < *

• Red Hat · Red Hat Enterprise Linux AI 3.5

  • unaffected 1793135863 – < *

• Red Hat · Red Hat OpenShift AI 3.0

  • unaffected 1790276886 – < *

• Red Hat · Red Hat OpenShift AI 3.0

  • unaffected 1790276884 – < *

• Red Hat · Red Hat OpenShift AI 3.0

  • unaffected 1790277045 – < *

• Red Hat · Red Hat OpenShift AI 3.0

  • unaffected 1790276889 – < *

• Red Hat · Red Hat OpenShift AI 3.0

  • unaffected 1790276974 – < *

• Red Hat · Red Hat OpenShift AI 3.2

  • unaffected 1790703497 – < *

• Red Hat · Red Hat OpenShift AI 3.2

  • unaffected 1790703506 – < *

• Red Hat · Red Hat OpenShift AI 3.2

  • unaffected 1790703590 – < *

• Red Hat · Red Hat OpenShift AI 3.2

  • unaffected 1790703568 – < *

• Red Hat · Red Hat OpenShift AI 3.2

  • unaffected 1790703586 – < *

• Red Hat · Red Hat OpenShift AI 3.2

  • unaffected 1790703494 – < *

• Red Hat · Red Hat OpenShift AI 3.4

  • unaffected 1790703542 – < *

• Red Hat · Red Hat OpenShift AI 3.4

  • unaffected 1790703539 – < *

• Red Hat · Red Hat OpenShift AI 3.4

  • unaffected 1790703553 – < *

• Red Hat · Red Hat OpenShift AI 3.4

  • unaffected 1790703631 – < *

• Red Hat · Red Hat OpenShift AI 3.4

  • unaffected 1790703597 – < *

• Red Hat · Red Hat OpenShift AI 3.4

  • unaffected 1790703641 – < *

• Red Hat · Red Hat OpenShift AI 3.4

  • unaffected 1790703630 – < *

• Red Hat · Red Hat OpenShift AI 3.4

  • unaffected 1790703541 – < *

• Red Hat · Red Hat OpenShift AI 3.4

  • unaffected 1790703545 – < *

• Red Hat · Red Hat OpenShift AI 3.4

  • unaffected 1791231926 – < *

• Red Hat · Red Hat OpenShift AI 3.4

  • unaffected 1791232048 – < *

• Red Hat · Red Hat OpenShift AI 3.5

  • unaffected 1790703552 – < *

• Red Hat · Red Hat OpenShift AI 3.5

  • unaffected 1790703656 – < *

• Red Hat · Red Hat OpenShift AI 3.5

  • unaffected 1790703557 – < *

• Red Hat · Red Hat OpenShift AI 3.5

  • unaffected 1790703707 – < *

• Red Hat · Red Hat OpenShift AI 3.5

  • unaffected 1790703645 – < *

• Red Hat · Red Hat OpenShift AI 3.5

  • unaffected 1790703554 – < *

• Red Hat · Red Hat OpenShift AI 3.5

  • unaffected 1790703554 – < *

• Red Hat · Red Hat OpenShift AI 3.5

  • unaffected 1790703630 – < *

• Red Hat · Red Hat OpenShift AI 3.5

  • unaffected 1790703706 – < *

• Red Hat · Red Hat Update Infrastructure 5

  • unaffected 1787241211 – < *

• Red Hat · Red Hat Update Infrastructure 5

  • unaffected 1787135742 – < *

• Red Hat · Red Hat Update Infrastructure 5

  • unaffected 1787241260 – < *

• Red Hat · Red Hat Update Infrastructure 5

  • unaffected 1788880445 – < *

• Red Hat · Red Hat Update Infrastructure 5

  • unaffected 1788880464 – < *

• Red Hat · Red Hat Update Infrastructure 5

  • unaffected 1788880456 – < *

• Red Hat · Red Hat Update Infrastructure 5

  • unaffected 1788765051 – < *

• Red Hat · Red Hat Update Infrastructure 5

  • unaffected 1788880581 – < *

• Red Hat · Red Hat Enterprise Linux 6

  All versions: affected

• Red Hat · Red Hat Enterprise Linux 9

  All versions: affected

• Red Hat · Red Hat Hardened Images

  All versions: unaffected

• Red Hat · Red Hat OpenShift AI (RHOAI)

  All versions: unaffected

What to do

Workaround: Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• EUVD EUVD-2026-40312 (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2026-58010](https://cveledger.app/badge/CVE-2026-58010.svg)](https://cveledger.app/cve/CVE-2026-58010)

Record last updated 10 Nov 2026, 19:23 UTC.