CVE-2026-58011

Glib: out-of-bounds read in glib/gdatetime.c:g_date_time_get_ymd via invalid gdatetime

HIGH
7.5
CVSS Score
Published: June 30, 2026 at 12:57 PM UTC
Updated: October 29, 2026 at 11:16 PM UTC
4 products affected across 2 vendorsAI Inference ServerEnterprise LinuxGLib

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Severity
HIGH7.5
Exploit prediction
EPSS 0.5%
SSVC
PoC

Description

A flaw was found in GLib. An out-of-bounds read of only 2 bytes can occur in the g_date_time_get_ymd function in the glib/gdatetime.c file when an invalid GDateTime object produced by the g_date_time_add_full function is processed. This flaw can corrupt the date output and potentially cause logic errors that may lead to a denial of service.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

All versions
Vendor states this is fixed in 1790621713 (unaffected)
Vendor states this is fixed in 1790621714 (unaffected)
Vendor states this is fixed in 1790621718 (unaffected)
v < 2.86.52.88.0
Affected range stops below 2.86.5, so it looks safe — our inference, not a vendor statement
Affected range stops below 2.88.1, so it looks safe — our inference, not a vendor statement
Vendor states this is fixed in 0:2.56.1-13.el7_9.1 (unaffected)
Vendor states this is fixed in 0:2.56.4-10.el8_4.7 (unaffected)
Vendor states this is fixed in 0:2.56.4-158.el8_6.7 (unaffected)
Vendor states this is fixed in 0:2.56.4-165.el8_8.2 (unaffected)
Vendor states this is fixed in 0:2.56.4-177.el8_10 (unaffected)
Vendor states this is fixed in 0:2.68.4-14.el9_4.8 (unaffected)
Vendor states this is fixed in 0:2.68.4-16.el9_6.7 (unaffected)
Vendor states this is fixed in 0:2.68.4-19.el9_8.9 (unaffected)
Vendor states this is fixed in 0:2.68.4-7.el9_2.7 (unaffected)
Vendor states this is fixed in 0:2.70.1-9.el8_10 (unaffected)
Vendor states this is fixed in 0:2.80.4-12.el10_2.21 (unaffected)
Vendor states this is fixed in 0:2.80.4-4.el10_0.17 (unaffected)
All versions
Vendor states this is fixed in 1 (unaffected)

References (79)

VDB Entryx_refsource_REDHATThird Party Advisory
Source: cverecord
https://access.redhat.com/security/cve/CVE-2026-58011
Issue Trackingx_refsource_REDHATThird Party Advisory
Source: cverecord
https://bugzilla.redhat.com/show_bug.cgi?id=2492245
ExploitIssue TrackingVendor Advisory
Source: cverecord
https://gitlab.gnome.org/GNOME/glib/-/issues/3917
ExploitVendor Advisory
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
https://gitlab.gnome.org/GNOME/glib/-/work_items/3917
Vendor Advisoryx_refsource_REDHAT
Source: cverecord
https://access.redhat.com/errata/RHSA-2026:49512
Vendor Advisoryx_refsource_REDHAT
Source: cverecord
https://access.redhat.com/errata/RHSA-2026:55440
Vendor Advisoryx_refsource_REDHAT
Source: cverecord
https://access.redhat.com/errata/RHSA-2026:57015
Vendor Advisoryx_refsource_REDHAT
Source: cverecord
https://access.redhat.com/errata/RHSA-2026:58981

SSVC — Action Prioritization

SSVCPoCAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-125

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