Bug 2432362 (CVE-2025-71151)

Summary: CVE-2025-71151 kernel: cifs: Fix memory and information leak in smb3_reconfigure()
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Version: unspecifiedKeywords: Security
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OS: Linux   
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Description OSIDB Bzimport 2026-01-23 15:02:24 UTC 
In the Linux kernel, the following vulnerability has been resolved:

cifs: Fix memory and information leak in smb3_reconfigure()

In smb3_reconfigure(), if smb3_sync_session_ctx_passwords() fails, the
function returns immediately without freeing and erasing the newly
allocated new_password and new_password2. This causes both a memory leak
and a potential information leak.

Fix this by calling kfree_sensitive() on both password buffers before
returning in this error case.
Comment 1 Keith Grant 2026-01-23 18:13:31 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026012328-CVE-2025-71151-1a45@gregkh/T