net/sunrpc: Fix reference count leaks in rpc_sysfs_xprt_state_change
Summary
GSD-2022-1000489: net/sunrpc: fix reference count leaks in rpc_sysfs_xprt_state_change. Affects Kernel versions < 5f6024c05a2c0fdd180b29395aaf686d25af3a0f. No fix is published. How to fix ↓
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Background
The net/sunrpc package is a part of the Linux Kernel and provides support for the Remote Procedure Call (RPC) protocol. RPC allows programs to execute procedures on remote systems. The rpc_sysfs_xprt_state_change function in net/sunrpc/sysfs.c is responsible for handling state changes in RPC transports. However, there are reference count leaks in this function, which can lead to resource leaks and potential security vulnerabilities.
Vulnerability Detail
The vulnerability in rpc_sysfs_xprt_state_change arises due to reference count leaks. When handling state changes in RPC transports, the function fails to properly release reference counts, leading to resource leaks. An attacker could potentially exploit this vulnerability to exhaust system resources, cause a denial-of-service condition, or escalate privileges. The impact and attack plausibility of this vulnerability have not been proven yet.
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 net/sunrpc package in the Linux Kernel is vulnerable to reference count leaks in the rpc_sysfs_xprt_state_change function. This vulnerability can lead to resource leaks and potential security risks. It is recommended to update the Linux Kernel to version v5.16.10 or later to fix this vulnerability. For further support on vulnerability remediation, you can contact DevNack.com.
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FAQ
The net/sunrpc package is a part of the Linux Kernel and provides support for the Remote Procedure Call (RPC) protocol. RPC allows programs to execute procedures on remote systems.
The rpc_sysfs_xprt_state_change function in net/sunrpc/sysfs.c is responsible for handling state changes in RPC transports.
The impact of this vulnerability could include resource leaks, potential security vulnerabilities, denial-of-service conditions, or privilege escalation. However, the actual impact and attack plausibility have not been proven yet.
To fix this vulnerability, update the Linux Kernel to version v5.16.10 or later. This fix is implemented in commit 5f6024c05a2c0fdd180b29395aaf686d25af3a0f.
You can obtain the updated Kernel from the official Linux Kernel repository at https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/
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