CVE-2018-20788: micode xiaomi_perseus-p-oss Integer Overflow or Wraparound

Vulnerability summary

CVE-2018-20788 is a medium (CVSS 5.5) Integer Overflow or Wraparound vulnerability in micode xiaomi_perseus-p-oss. EPSS estimates a 0.80% chance of exploitation in the next 30 days, higher than 55.9% of scored vulnerabilities.

Timeline

1. 25-02-2019
   PublishedVulnerability first disclosed.
2. 05-08-2024
   Last modifiedVulnerability information updated.

Description

drivers/leds/leds-aw2023.c in the led driver for custom Linux kernels on the Xiaomi Redmi 6pro daisy-o-oss phone has several integer overflows because of a left-shifting operation when the right-hand operand can be equal to or greater than the integer length. This can be exploited by a crafted application for denial of service.

• CWE-190Integer Overflow or WraparoundThe product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.