2389513 – (CVE-2025-38562) CVE-2025-38562 kernel: ksmbd: fix null pointer dereference error in generate_encryptionkey

Bug 2389513 (CVE-2025-38562) - CVE-2025-38562 kernel: ksmbd: fix null pointer dereference error in generate_encryptionkey

Summary: CVE-2025-38562 kernel: ksmbd: fix null pointer dereference error in generate_...

Keywords:
Status:	NEW
Alias:	CVE-2025-38562
Product:	Security Response
Classification:	Other
Component:	vulnerability
Sub Component:
Version:	unspecified
Hardware:	All
OS:	Linux
Priority:	unspecified
Severity:	unspecified
Target Milestone:	---
Assignee:	Product Security DevOps Team
QA Contact:
Docs Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+	depends on / blocked

Reported:	2025-08-19 18:05 UTC by OSIDB Bzimport
Modified:	2026-06-29 20:30 UTC (History)
CC List:	2 users (show)
Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

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Description OSIDB Bzimport 2025-08-19 18:05:03 UTC

In the Linux kernel, the following vulnerability has been resolved:

ksmbd: fix null pointer dereference error in generate_encryptionkey

If client send two session setups with krb5 authenticate to ksmbd,
null pointer dereference error in generate_encryptionkey could happen.
sess->Preauth_HashValue is set to NULL if session is valid.
So this patch skip generate encryption key if session is valid.

Comment 1 Jon Moroney 2025-08-19 20:49:54 UTC Comment hidden (spam)

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