CVE-2022-50036

drm/sun4i: dsi: Prevent underflow when computing packet sizes

Description

In the Linux kernel, the following vulnerability has been resolved: drm/sun4i: dsi: Prevent underflow when computing packet sizes Currently, the packet overhead is subtracted using unsigned arithmetic. With a short sync pulse, this could underflow and wrap around to near the maximal u16 value. Fix this by using signed subtraction. The call to max() will correctly handle any negative numbers that are produced. Apply the same fix to the other timings, even though those subtractions are less likely to underflow.

N/A

CVSS

Severity:

EPSS 0.02%

Affected: Linux Linux

References

Link	Tags
https://git.kernel.org/stable/c/a1e7908f78f5a7f53f8cd83c7dcdfec974c95f26
https://git.kernel.org/stable/c/98e28de472ef248352f04f87e29e634ebb0ec240
https://git.kernel.org/stable/c/fb837f5b83461624e525727a8f4add14b201147e
https://git.kernel.org/stable/c/82a1356a933d8443139f8886f11b63c974a09a67

Frequently Asked Questions

What is the severity of CVE-2022-50036?: CVE-2022-50036 has not yet been assigned a CVSS score.
How to fix CVE-2022-50036?: To fix CVE-2022-50036, 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-2022-50036 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2022-50036 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-2022-50036?: CVE-2022-50036 affects Linux Linux, Linux Linux.

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