Bug 2492243 (CVE-2026-58010) - CVE-2026-58010 glib: buffer over-read in glib/gvariant-serialiser.c via gvs_tuple_is_normal()
Summary: CVE-2026-58010 glib: buffer over-read in glib/gvariant-serialiser.c via gvs_t...
Keywords:
Status: NEW
Alias: CVE-2026-58010
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2494867 2494868 2494869
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-06-24 16:27 UTC by OSIDB Bzimport
Modified: 2026-09-01 00:25 UTC (History)
6 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2026:57606 0 None None None 2026-08-20 16:35:08 UTC
Red Hat Product Errata RHBA-2026:58991 0 None None None 2026-08-24 12:47:55 UTC
Red Hat Product Errata RHBA-2026:61344 0 None None None 2026-08-31 09:10:07 UTC
Red Hat Product Errata RHBA-2026:61808 0 None None None 2026-09-01 00:25:53 UTC
Red Hat Product Errata RHSA-2026:49512 0 None None None 2026-08-03 01:47:13 UTC
Red Hat Product Errata RHSA-2026:55440 0 None None None 2026-08-17 05:48:49 UTC
Red Hat Product Errata RHSA-2026:57015 0 None None None 2026-08-19 16:42:12 UTC
Red Hat Product Errata RHSA-2026:61766 0 None None None 2026-08-31 19:29:23 UTC

Description OSIDB Bzimport 2026-06-24 16:27:55 UTC 
gvs_tuple_is_normal() in glib/gvariant-serialiser.c:1253 has an off-by-one error in its alignment padding check. When checking whether padding bytes are zero, the bounds check uses > instead of >=, allowing a 1-byte out-of-bounds read when offset == value.size.
Comment 3 errata-xmlrpc 2026-08-03 01:47:12 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:49512 https://access.redhat.com/errata/RHSA-2026:49512
Comment 4 errata-xmlrpc 2026-08-17 05:48:48 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:55440 https://access.redhat.com/errata/RHSA-2026:55440
Comment 5 errata-xmlrpc 2026-08-19 16:42:11 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:57015 https://access.redhat.com/errata/RHSA-2026:57015
Comment 6 errata-xmlrpc 2026-08-31 19:29:22 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:61766 https://access.redhat.com/errata/RHSA-2026:61766
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