CVE-2022-49642

net: stmmac: dwc-qos: Disable split header for Tegra194

Description

In the Linux kernel, the following vulnerability has been resolved: net: stmmac: dwc-qos: Disable split header for Tegra194 There is a long-standing issue with the Synopsys DWC Ethernet driver for Tegra194 where random system crashes have been observed [0]. The problem occurs when the split header feature is enabled in the stmmac driver. In the bad case, a larger than expected buffer length is received and causes the calculation of the total buffer length to overflow. This results in a very large buffer length that causes the kernel to crash. Why this larger buffer length is received is not clear, however, the feedback from the NVIDIA design team is that the split header feature is not supported for Tegra194. Therefore, disable split header support for Tegra194 to prevent these random crashes from occurring. [0] https://lore.kernel.org/linux-tegra/b0b17697-f23e-8fa5-3757-604a86f3a095@nvidia.com/

N/A

CVSS

Severity:

EPSS 0.04%

Affected: Linux Linux

References

Link	Tags
https://git.kernel.org/stable/c/2968830c9b47ce093237483c6207c61065712386
https://git.kernel.org/stable/c/9cc8edc571b871d974b3289868553f9ce544aba6
https://git.kernel.org/stable/c/d5c315a787652c35045044877a249f7d5c8a4104
https://git.kernel.org/stable/c/cfa4caf3e881ad6dd366c903c34f1c7f21b857ab
https://git.kernel.org/stable/c/029c1c2059e9c4b38f97a06204cdecd10cfbeb8a

Frequently Asked Questions

What is the severity of CVE-2022-49642?: CVE-2022-49642 has not yet been assigned a CVSS score.
How to fix CVE-2022-49642?: To fix CVE-2022-49642, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2022-49642 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2022-49642 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2022-49642?: CVE-2022-49642 affects Linux Linux, Linux Linux.

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