Array Index Out-of-Bounds Vulnerability in media: pvrusb2
Summary
GSD-2022-1003606: media: pvrusb2: fix array-index-out-of-bounds in pvr2_i2c_core_init. Affects Kernel versions >= d855497edbfbf9e19a17f4a1154bca69cb4bd9ba, < a3304766d9384886e6d3092c776273526947a2e9. No fix is published. How to fix ↓
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Background
The media package in the Linux Kernel is responsible for handling various media devices, including video capture cards. One such device is pvrusb2, which is used for capturing video from Pinnacle PCTV USB devices. The pvrusb2 driver in the media package initializes the I2C subsystem for communication with the device. However, a vulnerability exists in the pvr2_i2c_core_init function, which can lead to an array index out-of-bounds error.
Vulnerability Detail
The array index out-of-bounds vulnerability in pvr2_i2c_core_init occurs when accessing an array beyond its bounds. This can be exploited by an attacker to read or write data outside the intended memory region, potentially leading to information disclosure or arbitrary code execution. The vulnerability was introduced in version v2.6.18 of the Linux Kernel and has been fixed in version v5.10.121. The impact and attack plausibility of this vulnerability have not been proven yet.
How To Fix
No fixed version is published for this vulnerability.
To fix this vulnerability, it is recommended to update the Linux Kernel to version v5.10.121 or later. This can be done by applying the commit a3304766d9384886e6d3092c776273526947a2e9. Ensure that the updated Kernel is properly tested and deployed in the affected systems.
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Workaround
There is no known workaround for this vulnerability. It is essential to update the Linux Kernel to the fixed version.
Conclusion
The array index out-of-bounds vulnerability in the pvrusb2 driver of the media package in the Linux Kernel can potentially lead to information disclosure or arbitrary code execution. It is crucial to update the Linux Kernel to version v5.10.121 or later to mitigate this vulnerability. For further support on vulnerability remediation, you can reach out to DevNack.com.
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FAQ
The impact of this vulnerability can vary depending on the attacker's capabilities and the system's configuration. It could potentially lead to information disclosure or arbitrary code execution.
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 and the playground will analyze it for vulnerabilities.
At the time of this report, there are no known exploits for this vulnerability. However, it is always recommended to apply security patches promptly to mitigate the risk.
The exact attack vector for this vulnerability is not yet known. It is advisable to assume that remote exploitation is possible until further information is available.
For more details about this vulnerability, you can refer to the source link provided in the database_specific section of this report.
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