CVE-2021-47137: net: lantiq: fix memory corruption in RX ring
In the Linux kernel, the following vulnerability has been resolved:
net: lantiq: fix memory corruption in RX ring
In a situation where memory allocation or dma mapping fails, an invalid address is programmed into the descriptor. This can lead to memory corruption. If the memory allocation fails, DMA should reuse the previous skb and mapping and drop the packet. This patch also increments rx drop counter.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2021-47137?
CVE-2021-47137 has a medium severity rating due to the potential for memory corruption.
How do I fix CVE-2021-47137?
To fix CVE-2021-47137, update the Linux kernel to the latest version that includes the relevant patches.
What systems are affected by CVE-2021-47137?
CVE-2021-47137 affects the Linux kernel, specifically configurations that utilize the lantiq networking subsystem.
What are the potential impacts of CVE-2021-47137?
The potential impacts of CVE-2021-47137 include unexpected system crashes or stability issues due to memory corruption.
What is the nature of the vulnerability in CVE-2021-47137?
CVE-2021-47137 involves memory corruption that can occur when an invalid address is programmed into the RX descriptor during DMA mapping failures.