Bug 2320525 (CVE-2024-49966)

Summary: CVE-2024-49966 kernel: ocfs2: cancel dqi_sync_work before freeing oinfo
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: 2321071    
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Description OSIDB Bzimport 2024-10-21 19:08:16 UTC 
In the Linux kernel, the following vulnerability has been resolved:

ocfs2: cancel dqi_sync_work before freeing oinfo

ocfs2_global_read_info() will initialize and schedule dqi_sync_work at the
end, if error occurs after successfully reading global quota, it will
trigger the following warning with CONFIG_DEBUG_OBJECTS_* enabled:

ODEBUG: free active (active state 0) object: 00000000d8b0ce28 object type: timer_list hint: qsync_work_fn+0x0/0x16c

This reports that there is an active delayed work when freeing oinfo in
error handling, so cancel dqi_sync_work first.  BTW, return status instead
of -1 when .read_file_info fails.
Comment 1 Robb Gatica 2024-10-22 16:57:27 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024102132-CVE-2024-49966-2893@gregkh/T