Bug 2395872 (CVE-2022-50351)

Summary: CVE-2022-50351 kernel: Kernel: Denial of Service in CIFS due to xid leak
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Priority: low    
Version: unspecifiedCC: rhel-process-autobot, watson-tool-maintainers
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in the Linux kernel's Common Internet File System (CIFS) implementation. This vulnerability occurs in the `cifs_create()` function where an `xid` (transaction ID) is not properly freed if the CIFS connection shuts down. A local attacker could exploit this flaw to cause a resource leak, potentially leading to a Denial of Service (DoS) condition on the system.
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Description OSIDB Bzimport 2025-09-16 17:03:19 UTC 
In the Linux kernel, the following vulnerability has been resolved:

cifs: Fix xid leak in cifs_create()

If the cifs already shutdown, we should free the xid before return,
otherwise, the xid will be leaked.
Comment 1 Jon Moroney 2025-09-16 18:13:26 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025091640-CVE-2022-50351-ac59@gregkh/T