Buffer Overflow Vulnerability in IB/qib Package
Summary
GSD-2021-1001943: IB/qib: Protect from buffer overflow in struct qib_user_sdma_pkt fields. Affects Kernel versions >= f931551bafe1f10ded7f5282e2aa162c267a2e5d, < 3f57c3f67fd93b4da86aeffea1ca32c484d054ad. No fix is published. How to fix ↓
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Background
The IB/qib package is a part of the Linux Kernel ecosystem. It provides support for InfiniBand (IB) and Quadrics Interconnect (QIB) hardware. These technologies enable high-speed data transfer and communication between nodes in a cluster. The package includes the struct qib_user_sdma_pkt, which is used for handling user space DMA packets. However, a buffer overflow vulnerability has been discovered in the fields of this structure.
Vulnerability Detail
The buffer overflow vulnerability in the struct qib_user_sdma_pkt fields can potentially be exploited by an attacker to overwrite adjacent memory locations, leading to arbitrary code execution or a system crash. This vulnerability was introduced in version v2.6.35 of the Linux Kernel and has been fixed in version v4.9.290. 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
In conclusion, the IB/qib package in the Linux Kernel is vulnerable to a buffer overflow in the struct qib_user_sdma_pkt fields. It is recommended to update the Linux Kernel to version v4.9.290 or later to fix this vulnerability. For further support on vulnerability remediation, you can contact DevNack.com.
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FAQ
The IB/qib package provides support for InfiniBand and Quadrics Interconnect hardware in the Linux Kernel.
A buffer overflow vulnerability occurs when a program writes data beyond the boundaries of a buffer, potentially overwriting adjacent memory locations.
The buffer overflow vulnerability in the struct qib_user_sdma_pkt fields could allow an attacker to execute arbitrary code or crash the system.
You can use Vulert's playground (https://vulert.com/scanner) to check if your system is affected by this vulnerability. Simply upload your package-lock.json file to the playground and it will provide real-time alerts for open-source vulnerabilities.
You can find more information about this vulnerability in the Open Source Vulnerability Database (OSVDB) entry: https://github.com/cloudsecurityalliance/gsd-database/blob/main/2021/1001xxx/GSD-2021-1001943.json
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