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

Quick assessment

Affected
GNOME GLib
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

GNOME glib是GNOME基金会开源的一个通用的、可移植的实用程序库。提供了许多有用的数据类型、宏、类型转换、字符串实用程序、文件实用程序、主循环抽象等。 GNOME GLib存在缓冲区错误漏洞，该漏洞源于glib/gvariant-serialiser.c文件中的gvs_tuple_is_normal函数存在差一错误，在对齐填充检查时边界检查使用了>代替>=，导致越界读取1字节，该问题可能造成1字节的信息泄露以及当越界读取跨越页边界时导致拒绝服务。以下版本受到影响：2.86.5之前版本和2.88.

CVSS 6.5 · Medium EPSS 0.49% · P41

Possible ATT&CK Techniques 1 AI

T1530 · Data from Cloud Storage

Affected Version Matrix 94

VendorProduct Version RangeStatus
GNOME GLib < 2.86.5 affected
< 2.88.1 affected
Red Hat Cert Manager support for Red Hat OpenShift release 1.17 1791371080< * unaffected
1791371069< * unaffected
1791788287< * unaffected
1791378395< * unaffected
1791970484< * unaffected
Red Hat Cert Manager support for Red Hat OpenShift release 1.18 1791459707< * unaffected
1791459711< * unaffected
1791459759< * unaffected
1789029076< * unaffected
1791966259< * unaffected
Red Hat Cert Manager support for Red Hat OpenShift release 1.19 1788348522< * unaffected
1788348571< * unaffected
1788348571< * unaffected
1788348594< * unaffected
Red Hat Cert Manager support for Red Hat OpenShift release 1.20 1790223279< * unaffected
1790223719< * unaffected
1790272426< * unaffected
1790589998< * unaffected
1790589912< * unaffected
1790589914< * unaffected
1790589855< * unaffected
1790598593< * unaffected
Red Hat Red Hat AI Inference Server 3.2 1790621714< * unaffected
1790621718< * unaffected
1790621713< * unaffected
Red Hat Red Hat AI Inference Server 3.5 1791425869< * unaffected
1791427182< * unaffected
1791803821< * unaffected
1791473631< * unaffected
1791818357< * unaffected
1791473614< * unaffected
Red Hat Red Hat Discovery 2 1788205779< * unaffected
1788206196< * unaffected
Red Hat Red Hat Enterprise Linux 10 0:2.80.4-12.el10_2.21< * unaffected
any affected
Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support 0:2.80.4-4.el10_0.17< * unaffected
Red Hat Red Hat Enterprise Linux 6 any affected
Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support 0:2.56.1-13.el7_9.1< * unaffected
Red Hat Red Hat Enterprise Linux 8 0:2.70.1-9.el8_10< * unaffected
0:2.56.4-177.el8_10< * unaffected
Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support 0:2.56.4-10.el8_4.7< * unaffected
Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On 0:2.56.4-10.el8_4.7< * unaffected
Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support 0:2.56.4-158.el8_6.7< * unaffected
Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On 0:2.56.4-158.el8_6.7< * unaffected
Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service 0:2.56.4-165.el8_8.2< * unaffected
Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions 0:2.56.4-165.el8_8.2< * unaffected
Red Hat Red Hat Enterprise Linux 9 0:2.68.4-19.el9_8.9< * unaffected
0:2.68.4-19.el9_8.9< * unaffected
any affected
Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions 0:2.68.4-7.el9_2.7< * unaffected
Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions 0:2.68.4-14.el9_4.8< * unaffected
Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support 0:2.68.4-16.el9_6.7< * unaffected
Red Hat Red Hat Hardened Images any unaffected
Red Hat Red Hat OpenShift AI 3.0 1790276886< * unaffected
1790276884< * unaffected
1790277045< * unaffected
1790276889< * unaffected
1790276974< * unaffected
Red Hat Red Hat OpenShift AI 3.2 1790703497< * unaffected
1790703506< * unaffected
1790703590< * unaffected
1790703568< * unaffected
1790703586< * unaffected
1790703494< * unaffected
Red Hat Red Hat OpenShift AI 3.4 1790703542< * unaffected
1790703539< * unaffected
1790703553< * unaffected
1790703631< * unaffected
1790703597< * unaffected
1790703641< * unaffected
1790703630< * unaffected
1790703541< * unaffected
… +3 more rows
Red Hat Red Hat OpenShift AI 3.5 1790703552< * unaffected
1790703656< * unaffected
1790703557< * unaffected
1790703707< * unaffected
1790703645< * unaffected
1790703554< * unaffected
1790703554< * unaffected
1790703630< * unaffected
… +1 more rows
Red Hat Red Hat Update Infrastructure 5 1787241211< * unaffected
1787135742< * unaffected
1787241260< * unaffected
1788880445< * unaffected
1788880464< * unaffected
1788880456< * unaffected
1788765051< * unaffected
1788880581< * unaffected
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I. Basic Information for CVE-2026-58010

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Glib: buffer over-read in glib/gvariant-serialiser.c via gvs_tuple_is_normal()
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
缓冲区上溢读取
Source: CVE Program / CVE List V5
Vulnerability Title
GNOME glib 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
GNOME glib是GNOME基金会开源的一个通用的、可移植的实用程序库。提供了许多有用的数据类型、宏、类型转换、字符串实用程序、文件实用程序、主循环抽象等。 GNOME GLib存在缓冲区错误漏洞，该漏洞源于glib/gvariant-serialiser.c文件中的gvs_tuple_is_normal函数存在差一错误，在对齐填充检查时边界检查使用了>代替>=，导致越界读取1字节，该问题可能造成1字节的信息泄露以及当越界读取跨越页边界时导致拒绝服务。以下版本受到影响：2.86.5之前版本和2.88.
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
GNOME GLib 0 ~ 2.86.5 -
Red Hat Red Hat Enterprise Linux 10 0:2.80.4-12.el10_2.21 ~ * cpe:/o:redhat:enterprise_linux:10.2
Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support 0:2.80.4-4.el10_0.17 ~ * cpe:/o:redhat:enterprise_linux_eus:10.0
Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support 0:2.56.1-13.el7_9.1 ~ * cpe:/o:redhat:rhel_els:7
Red Hat Red Hat Enterprise Linux 8 0:2.70.1-9.el8_10 ~ * cpe:/a:redhat:enterprise_linux:8::crb
Red Hat Red Hat Enterprise Linux 8 0:2.56.4-177.el8_10 ~ * cpe:/a:redhat:enterprise_linux:8::crb
Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support 0:2.56.4-10.el8_4.7 ~ * cpe:/o:redhat:rhel_aus:8.4::baseos
Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On 0:2.56.4-10.el8_4.7 ~ * cpe:/o:redhat:rhel_aus:8.4::baseos
Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support 0:2.56.4-158.el8_6.7 ~ * cpe:/o:redhat:rhel_aus:8.6::baseos
Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On 0:2.56.4-158.el8_6.7 ~ * cpe:/o:redhat:rhel_aus:8.6::baseos
Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service 0:2.56.4-165.el8_8.2 ~ * cpe:/o:redhat:rhel_e4s:8.8::baseos
Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions 0:2.56.4-165.el8_8.2 ~ * cpe:/o:redhat:rhel_e4s:8.8::baseos
Red Hat Red Hat Enterprise Linux 9 0:2.68.4-19.el9_8.9 ~ * cpe:/a:redhat:enterprise_linux:9::appstream
Red Hat Red Hat Enterprise Linux 9 0:2.68.4-19.el9_8.9 ~ * cpe:/a:redhat:enterprise_linux:9::appstream
Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions 0:2.68.4-7.el9_2.7 ~ * cpe:/a:redhat:rhel_e4s:9.2::appstream
Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions 0:2.68.4-14.el9_4.8 ~ * cpe:/a:redhat:rhel_e4s:9.4::appstream
Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support 0:2.68.4-16.el9_6.7 ~ * cpe:/a:redhat:rhel_eus:9.6::appstream
Red Hat Cert Manager support for Red Hat OpenShift release 1.17 1791371080 ~ * cpe:/a:redhat:cert_manager:1.17::el9
Red Hat Cert Manager support for Red Hat OpenShift release 1.17 1791371069 ~ * cpe:/a:redhat:cert_manager:1.17::el9
Red Hat Cert Manager support for Red Hat OpenShift release 1.17 1791788287 ~ * cpe:/a:redhat:cert_manager:1.17::el9
Red Hat Cert Manager support for Red Hat OpenShift release 1.17 1791378395 ~ * cpe:/a:redhat:cert_manager:1.17::el9
Red Hat Cert Manager support for Red Hat OpenShift release 1.17 1791970484 ~ * cpe:/a:redhat:cert_manager:1.17::el9
Red Hat Cert Manager support for Red Hat OpenShift release 1.18 1791459707 ~ * cpe:/a:redhat:cert_manager:1.18::el9
Red Hat Cert Manager support for Red Hat OpenShift release 1.18 1791459711 ~ * cpe:/a:redhat:cert_manager:1.18::el9
Red Hat Cert Manager support for Red Hat OpenShift release 1.18 1791459759 ~ * cpe:/a:redhat:cert_manager:1.18::el9
Red Hat Cert Manager support for Red Hat OpenShift release 1.18 1789029076 ~ * cpe:/a:redhat:cert_manager:1.18::el9
Red Hat Cert Manager support for Red Hat OpenShift release 1.18 1791966259 ~ * cpe:/a:redhat:cert_manager:1.18::el9
Red Hat Cert Manager support for Red Hat OpenShift release 1.19 1788348522 ~ * cpe:/a:redhat:cert_manager:1.19::el9
Red Hat Cert Manager support for Red Hat OpenShift release 1.19 1788348571 ~ * cpe:/a:redhat:cert_manager:1.19::el9
Red Hat Cert Manager support for Red Hat OpenShift release 1.19 1788348571 ~ * cpe:/a:redhat:cert_manager:1.19::el9

II. Public POCs for CVE-2026-58010

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-58010

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Vendor Advisories for CVE-2026-58010 (74)

Other References for CVE-2026-58010 (2)

Same Patch Batch · GNOME · 2026-06-30 · 7 CVEs total

CVE-2026-58016 7.5 HIGH Glib: integer underflow in gio/gdbusintrospection.c via "g_dbus_node_info_new_for_xml"
CVE-2026-58014 7.3 HIGH Glib: off-by-one error in glib/gkeyfile.c via "g_key_file_get_locale_string_list"
CVE-2026-58011 6.5 MEDIUM Glib: out-of-bounds read in glib/gdatetime.c:g_date_time_get_ymd via invalid gdatetime
CVE-2026-58013 6.5 MEDIUM Glib: buffer over-read in glib/giochannel.c via "g_io_channel_read_line_backend"
CVE-2026-58012 6.5 MEDIUM Glib: buffer over-read in g_regex_replace() via glib/gregex.c:string_append() and g_utf8_n
CVE-2026-58015 5.9 MEDIUM Glib: path traversal in glib/gio/gdbusauthmechanismsha1.c via keyring_lookup_entry and mec

IV. Related Vulnerabilities

Same product: GLib
Same vendor: GNOME
Same weakness: CWE-126

V. Comments for CVE-2026-58010

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