Bug 2320264 (CVE-2024-47750)

Summary: CVE-2024-47750 kernel: RDMA/hns: Fix Use-After-Free of rsv_qp on HIP08
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: 2320352    
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Description OSIDB Bzimport 2024-10-21 13:06:32 UTC 
In the Linux kernel, the following vulnerability has been resolved:

RDMA/hns: Fix Use-After-Free of rsv_qp on HIP08

Currently rsv_qp is freed before ib_unregister_device() is called
on HIP08. During the time interval, users can still dereg MR and
rsv_qp will be used in this process, leading to a UAF. Move the
release of rsv_qp after calling ib_unregister_device() to fix it.
Comment 1 Robb Gatica 2024-10-21 15:14:17 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024102113-CVE-2024-47750-390b@gregkh/T