Bug 2501732 (CVE-2026-16118) - CVE-2026-16118 xdgmime: heap-based buffer overflow in _xdg_mime_magic_parse_magic_line() in xdgmimemagic.c
Summary: CVE-2026-16118 xdgmime: heap-based buffer overflow in _xdg_mime_magic_parse_m...
Keywords:
Status: NEW
Alias: CVE-2026-16118
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: 2501862 2501861 2501863
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-07-17 14:30 UTC by OSIDB Bzimport
Modified: 2026-09-24 11:12 UTC (History)
2 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-2026:65875 0 None None None 2026-09-09 09:01:47 UTC
Red Hat Product Errata RHBA-2026:66023 0 None None None 2026-09-09 15:22:58 UTC
Red Hat Product Errata RHBA-2026:67185 0 None None None 2026-09-14 13:38:15 UTC
Red Hat Product Errata RHBA-2026:67290 0 None None None 2026-09-14 13:31:46 UTC
Red Hat Product Errata RHBA-2026:67298 0 None None None 2026-09-14 13:31:42 UTC
Red Hat Product Errata RHBA-2026:67997 0 None None None 2026-09-16 12:18:52 UTC
Red Hat Product Errata RHBA-2026:68494 0 None None None 2026-09-17 03:00:16 UTC
Red Hat Product Errata RHBA-2026:68577 0 None None None 2026-09-17 09:34:17 UTC
Red Hat Product Errata RHBA-2026:68630 0 None None None 2026-09-17 12:30:04 UTC
Red Hat Product Errata RHSA-2026:64799 0 None None None 2026-09-08 06:16:53 UTC
Red Hat Product Errata RHSA-2026:64800 0 None None None 2026-09-08 08:19:46 UTC
Red Hat Product Errata RHSA-2026:66451 0 None None None 2026-09-10 16:15:26 UTC
Red Hat Product Errata RHSA-2026:70636 0 None None None 2026-09-23 09:22:04 UTC
Red Hat Product Errata RHSA-2026:71403 0 None None None 2026-09-24 11:12:43 UTC
Red Hat Product Errata RHSA-2026:71404 0 None None None 2026-09-24 07:13:13 UTC
Red Hat Product Errata RHSA-2026:71405 0 None None None 2026-09-24 07:16:05 UTC

Description OSIDB Bzimport 2026-07-17 14:30:02 UTC 
A flaw was found in xdgmime, affecting all versions. A heap-based buffer overflow can occur in _xdg_mime_magic_parse_magic_line() in the xdgmimemagic.c file on little-endian systems when an attacker-controlled MIME magic file in a user-writable XDG data location (e.g., in the $XDG_DATA_HOME/mime/magic path) is parsed by an application performing MIME type detection (e.g., via g_content_type_guess()). When performing byte-swap, incorrect pointer arithmetic on the write side causes an out-of-bounds write of 2 bytes, resulting in an application crash or memory corruption. To exploit this flaw, an attacker must trick a user into installing a malicious MIME magic file.
Comment 2 errata-xmlrpc 2026-09-08 06:16:52 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:64799 https://access.redhat.com/errata/RHSA-2026:64799
Comment 3 errata-xmlrpc 2026-09-08 08:19:45 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:64800 https://access.redhat.com/errata/RHSA-2026:64800
Comment 4 errata-xmlrpc 2026-09-10 16:15:25 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:66451 https://access.redhat.com/errata/RHSA-2026:66451
Comment 5 Jon Orris 2026-09-23 09:22:03 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions

Via RHSA-2026:70636 https://access.redhat.com/errata/RHSA-2026:70636
Comment 6 Jon Orris 2026-09-24 07:13:12 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10.0 Extended Update Support

Via RHSA-2026:71404 https://access.redhat.com/errata/RHSA-2026:71404
Comment 7 Jon Orris 2026-09-24 07:16:04 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

Via RHSA-2026:71405 https://access.redhat.com/errata/RHSA-2026:71405
Comment 8 Jon Orris 2026-09-24 11:12:42 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.6 Extended Update Support

Via RHSA-2026:71403 https://access.redhat.com/errata/RHSA-2026:71403
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