Use-after-free vulnerability in RDMA rxe_queue_cleanup
Summary
GSD-2021-1002719: RDMA: Fix use-after-free in rxe_queue_cleanup. Affects Kernel versions >= 514aee660df493cd673154a6ba6bab745ec47b8c, < acb53e47db1fbc7cd37ab10b46388f045a76e383. No fix is published. How to fix ↓
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Background
The RDMA (Remote Direct Memory Access) is a protocol that allows direct memory access from the memory of one computer into that of another without involving either one's operating system. The rxe_queue_cleanup function is responsible for cleaning up resources associated with a queue in the RDMA subsystem. However, a use-after-free vulnerability has been discovered in this function, which can lead to memory corruption and potential security exploits.
Vulnerability Detail
The use-after-free vulnerability in rxe_queue_cleanup occurs when the function attempts to free a queue structure that is still being used. An attacker can exploit this vulnerability by manipulating the memory layout to execute arbitrary code or crash the system. The impact and attack plausibility of this vulnerability have not been proven yet. The vulnerability was introduced in Linux Kernel version v5.15 and fixed in version v5.15.10.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
There is no specific workaround mentioned for this vulnerability.
Conclusion
The use-after-free vulnerability in RDMA rxe_queue_cleanup can lead to memory corruption and potential security exploits. It is recommended to update the Linux Kernel to version v5.15.10 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
RDMA (Remote Direct Memory Access) is a protocol that allows direct memory access from the memory of one computer into that of another without involving either one's operating system.
The rxe_queue_cleanup function is responsible for cleaning up resources associated with a queue in the RDMA subsystem.
A use-after-free vulnerability occurs when a program attempts to access memory that has already been freed, leading to potential memory corruption and security exploits.
The impact of this vulnerability is not yet proven. However, it can potentially allow an attacker to execute arbitrary code or crash the system.
To fix this vulnerability, it is recommended to update the Linux Kernel to version v5.15.10 or later.
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