Bug 2540409 (CVE-2026-93801) - CVE-2026-93801 kernel: smb/client: zero-initialize stack-allocated cifs_open_info_data
Summary: CVE-2026-93801 kernel: smb/client: zero-initialize stack-allocated cifs_open_...
Keywords:
Status: NEW
Alias: CVE-2026-93801
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-24 16:43 UTC by OSIDB Bzimport
Modified: 2026-09-28 12:16 UTC (History)
17 users (show)

Fixed In Version:
Clone Of:
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Description OSIDB Bzimport 2026-09-24 16:43:15 UTC 
In the Linux kernel, the following vulnerability has been resolved:

smb/client: zero-initialize stack-allocated cifs_open_info_data

Stack-allocated cifs_open_info_data may contain random data.
This can make some fields have wrong value if they are not set later.
Comment 1 Mauro Matteo Cascella 2026-09-28 12:12:00 UTC 
Upstream advisory:
https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-93801.mbox
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