Detections
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CVE-2022-49089
medium
Description
In the Linux kernel, the following vulnerability has been resolved: IB/rdmavt: add lock to call to rvt_error_qp to prevent a race condition The documentation of the function rvt_error_qp says both r_lock and s_lock need to be held when calling that function. It also asserts using lockdep that both of those locks are held. However, the commit I referenced in Fixes accidentally makes the call to rvt_error_qp in rvt_ruc_loopback no longer covered by r_lock. This results in the lockdep assertion failing and also possibly in a race condition.
References
https://git.kernel.org/stable/c/92f1947c0d26060e978b3a9f21f32ce7c8c9cca3
https://git.kernel.org/stable/c/8a50937227c385a477177c9ffa122b4230e40666
https://git.kernel.org/stable/c/77ffb2495a41098f9d6a14f8aefde3188da75944
https://git.kernel.org/stable/c/57800cc36e55db0547461c49acf5cd84c0f502b0
https://git.kernel.org/stable/c/4d809f69695d4e7d1378b3a072fa9aef23123018
https://git.kernel.org/stable/c/43c2d7890ecabe527448a6c391fb2d9a5e6bbfe0