Bug 2320166 (CVE-2024-47695)

Summary: CVE-2024-47695 kernel: RDMA/rtrs-clt: Reset cid to con_num - 1 to stay in bounds
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: 2320192    
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Description OSIDB Bzimport 2024-10-21 12:01:07 UTC 
In the Linux kernel, the following vulnerability has been resolved:

RDMA/rtrs-clt: Reset cid to con_num - 1 to stay in bounds

In the function init_conns(), after the create_con() and create_cm() for
loop if something fails. In the cleanup for loop after the destroy tag, we
access out of bound memory because cid is set to clt_path->s.con_num.

This commits resets the cid to clt_path->s.con_num - 1, to stay in bounds
in the cleanup loop later.
Comment 1 Michal Findra 2024-10-21 12:54:15 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024102112-CVE-2024-47695-2d7b@gregkh/T