Bug 2554826 (CVE-2026-98453) - CVE-2026-98453 kernel: smb: client: close handle after create-context parsing failure
Summary: CVE-2026-98453 kernel: smb: client: close handle after create-context parsing...
Keywords:
Status: NEW
Alias: CVE-2026-98453
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-10-18 15:21 UTC by OSIDB Bzimport
Modified: 2026-10-19 13:50 UTC (History)
17 users (show)

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


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Description OSIDB Bzimport 2026-10-18 15:21:19 UTC
In the Linux kernel, the following vulnerability has been resolved:

smb: client: close handle after create-context parsing failure

SMB2_open() accounts a successful CREATE response as a remote open before
parsing its create contexts.  If smb2_parse_contexts() rejects malformed
context data, SMB2_open() returns without closing the handle, leaving the
server-side handle open and num_remote_opens elevated.

Close the handle after a post-CREATE context parsing failure so the error
path releases the remote resource and balances the open count.


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