Bug 2363431 (CVE-2022-49822)

Summary: CVE-2022-49822 kernel: cifs: Fix connections leak when tlink setup failed
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: dfreiber, drow, jburrell, vkumar
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Hardware: All   
OS: Linux   
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Description OSIDB Bzimport 2025-05-01 15:04:20 UTC 
In the Linux kernel, the following vulnerability has been resolved:

cifs: Fix connections leak when tlink setup failed

If the tlink setup failed, lost to put the connections, then
the module refcnt leak since the cifsd kthread not exit.

Also leak the fscache info, and for next mount with fsc, it will
print the follow errors:
  CIFS: Cache volume key already in use (cifs,127.0.0.1:445,TEST)

Let's check the result of tlink setup, and do some cleanup.
Comment 1 Avinash Hanwate 2025-05-02 05:44:22 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025050133-CVE-2022-49822-1913@gregkh/T