Bug 2334831 (CVE-2024-56749)

Summary: CVE-2024-56749 kernel: dlm: fix dlm_recover_members refcount on error
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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Description OSIDB Bzimport 2024-12-29 12:02:51 UTC 
In the Linux kernel, the following vulnerability has been resolved:

dlm: fix dlm_recover_members refcount on error

If dlm_recover_members() fails we don't drop the references of the
previous created root_list that holds and keep all rsbs alive during the
recovery. It might be not an unlikely event because ping_members() could
run into an -EINTR if another recovery progress was triggered again.
Comment 1 Avinash Hanwate 2024-12-30 03:33:43 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024122927-CVE-2024-56749-14d1@gregkh/T