Bug 2324608 (CVE-2024-50204)

Summary: CVE-2024-50204 kernel: fs: don't try and remove empty rbtree node
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Priority: medium    
Version: unspecifiedCC: dfreiber, drow, jburrell, vkumar
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Hardware: All   
OS: Linux   
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Bug Depends On: 2324682    
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Description OSIDB Bzimport 2024-11-08 13:48:10 UTC 
In the Linux kernel, the following vulnerability has been resolved:

fs: don't try and remove empty rbtree node

When copying a namespace we won't have added the new copy into the
namespace rbtree until after the copy succeeded. Calling free_mnt_ns()
will try to remove the copy from the rbtree which is invalid. Simply
free the namespace skeleton directly.
Comment 1 Robb Gatica 2024-11-08 15:22:26 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024110805-CVE-2024-50204-11f7@gregkh/T