Bug 2323909 (CVE-2024-50109)

Summary: CVE-2024-50109 kernel: md/raid10: fix null ptr dereference in raid10_size()
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
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Priority: medium    
Version: unspecifiedCC: dfreiber, drow, jburrell, vkumar
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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Bug Depends On: 2324051    
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Description OSIDB Bzimport 2024-11-05 18:01:36 UTC 
In the Linux kernel, the following vulnerability has been resolved:

md/raid10: fix null ptr dereference in raid10_size()

In raid10_run() if raid10_set_queue_limits() succeed, the return value
is set to zero, and if following procedures failed raid10_run() will
return zero while mddev->private is still NULL, causing null ptr
dereference in raid10_size().

Fix the problem by only overwrite the return value if
raid10_set_queue_limits() failed.
Comment 1 Robb Gatica 2024-11-05 21:34:10 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024110554-CVE-2024-50109-b93c@gregkh/T
Comment 2 errata-xmlrpc 2025-05-13 08:36:35 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