Bug 2400720 (CVE-2022-50460)

Summary: CVE-2022-50460 kernel: kernel: Denial of Service due to xid leak in cifs_flock()
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
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Priority: low    
Version: unspecifiedKeywords: Security
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OS: Linux   
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A flaw was found in the Linux kernel. This vulnerability, a resource leak, occurs in the CIFS (Common Internet File System) component within the cifs_flock() function. A local user could exploit this by not using flock, which prevents the transaction identifier (xid) from being freed, leading to a resource leak. This can result in a Denial of Service (DoS) condition.
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Description OSIDB Bzimport 2025-10-01 12:03:32 UTC 
In the Linux kernel, the following vulnerability has been resolved:

cifs: Fix xid leak in cifs_flock()

If not flock, before return -ENOLCK, should free the xid,
otherwise, the xid will be leaked.
Comment 1 Jon Moroney 2025-10-01 22:40:00 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025100119-CVE-2022-50460-2149@gregkh/T