Bug 2513373 (CVE-2026-68343) - CVE-2026-68343 kernel: smb: client: validate DFS referral PathConsumed
Summary: CVE-2026-68343 kernel: smb: client: validate DFS referral PathConsumed
Keywords:
Status: NEW
Alias: CVE-2026-68343
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:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-08-10 12:33 UTC by OSIDB Bzimport
Modified: 2026-09-01 21:38 UTC (History)
17 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 RHSA-2026:57252 0 None None None 2026-08-20 05:13:37 UTC
Red Hat Product Errata RHSA-2026:60440 0 None None None 2026-09-01 21:38:52 UTC

Description OSIDB Bzimport 2026-08-10 12:33:47 UTC
In the Linux kernel, the following vulnerability has been resolved:

smb: client: validate DFS referral PathConsumed

parse_dfs_referrals() validates that the response contains the fixed
referral entry array and, on for-next, the per-referral string offsets.
However, the response also contains a PathConsumed value that is later
used for DFS path parsing.

If a malformed response provides a PathConsumed value larger than the
search name, later DFS parsing can advance beyond the end of the path.

Validate PathConsumed against the search name length before storing it in
the parsed referral.

Comment 6 errata-xmlrpc 2026-08-20 05:13:36 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:57252 https://access.redhat.com/errata/RHSA-2026:57252

Comment 7 errata-xmlrpc 2026-09-01 21:38:50 UTC
This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 4.22

Via RHSA-2026:60440 https://access.redhat.com/errata/RHSA-2026:60440


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