Bug 2324557 (CVE-2024-50184)

Summary: CVE-2024-50184 kernel: virtio_pmem: Check device status before requesting flush
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: 2324698    
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Description OSIDB Bzimport 2024-11-08 13:45:20 UTC 
In the Linux kernel, the following vulnerability has been resolved:

virtio_pmem: Check device status before requesting flush

If a pmem device is in a bad status, the driver side could wait for
host ack forever in virtio_pmem_flush(), causing the system to hang.

So add a status check in the beginning of virtio_pmem_flush() to return
early if the device is not activated.
Comment 1 Robb Gatica 2024-11-08 15:40:03 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024110834-CVE-2024-50184-00c9@gregkh/T