Bug 2334398 (CVE-2024-53173)

Summary: CVE-2024-53173 kernel: NFSv4.0: Fix a use-after-free problem in the asynchronous open()
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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OS: Linux   
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Description OSIDB Bzimport 2024-12-27 14:04:24 UTC 
In the Linux kernel, the following vulnerability has been resolved:

NFSv4.0: Fix a use-after-free problem in the asynchronous open()

Yang Erkun reports that when two threads are opening files at the same
time, and are forced to abort before a reply is seen, then the call to
nfs_release_seqid() in nfs4_opendata_free() can result in a
use-after-free of the pointer to the defunct rpc task of the other
thread.
The fix is to ensure that if the RPC call is aborted before the call to
nfs_wait_on_sequence() is complete, then we must call nfs_release_seqid()
in nfs4_open_release() before the rpc_task is freed.
Comment 1 Avinash Hanwate 2024-12-28 12:20:55 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024122717-CVE-2024-53173-b3c7@gregkh/T
Comment 2 errata-xmlrpc 2025-05-13 08:37:18 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2025:6966 https://access.redhat.com/errata/RHSA-2025:6966