Refcount Leak in powerpc/cell/axon_msi
Summary
GSD-2022-1006004: powerpc/cell/axon_msi: Fix refcount leak in setup_msi_msg_address. Affects Kernel versions >= ce21b3c9648ae55181787bf25ee00cf91dfd5c91, < f388643657cd5a04dc47a68d85321876c5b4c208. No fix is published. How to fix ↓
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Background
The powerpc/cell/axon_msi is a component of the Linux Kernel, which is responsible for managing the setup of Message Signaled Interrupts (MSIs) on PowerPC Cell processors. MSIs are a mechanism used to improve interrupt handling performance. The axon_msi module specifically handles the setup of MSI message addresses. This vulnerability in the axon_msi module leads to a refcount leak during the setup of MSI message addresses.
Vulnerability Detail
The vulnerability in powerpc/cell/axon_msi module results in a refcount leak during the setup of MSI message addresses. This leak can lead to resource exhaustion and potential denial-of-service attacks. An attacker could exploit this vulnerability to exhaust system resources, causing the system to become unresponsive or crash. The vulnerability was introduced in Linux Kernel version v2.6.23 and is fixed in version v5.4.211.
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 refcount leak vulnerability in the powerpc/cell/axon_msi module can lead to resource exhaustion and potential denial-of-service attacks. It is recommended to update the Linux Kernel to version v5.4.211 or later to fix this vulnerability. For further support on vulnerability remediation, you can contact DevNack.com.
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FAQ
This vulnerability can lead to resource exhaustion and potential denial-of-service attacks. An attacker could exploit this vulnerability to exhaust system resources, causing the system to become unresponsive or crash.
You can use the Vulert Playground at Vulert Scanner to check if your system is affected by this vulnerability. Simply upload your package-lock.json file to the playground, and it will alert you in real-time if the vulnerability is present.
Yes, a patch is available in Linux Kernel version v5.4.211. It is recommended to update to this version or later to fix the vulnerability.
The exact attack vector for this vulnerability is not specified. However, as it can lead to denial-of-service attacks, it is possible that it could be exploited remotely.
There are no known instances of this vulnerability being exploited in the wild at this time.
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