CVE-2021-1916

Possible buffer underflow due to lack of check for negative indices values when processing user provided input in Snapdragon Auto, Snapdragon Compute…

Critical · published September 8, 2021

CVSS v3.1
9.8
EPSS
1%
Percentile
56.0
In the wild
Unconfirmed
What it is

🚨 A sneaky buffer underflow vulnerability shows up when processing user input on various Snapdragon platforms — it’s like a bouncer letting in anyone who tries to sneak through the wrong door! 🔥 Think of it like a restaurant where the chef accepts 'special requests' without checking if the orders are valid. If a negative index request slips in, it could throw off the entire kitchen, leading to unexpected and potentially messy consequences! An attacker could exploit this issue to trigger unpredictable behavior, potentially leading to crashes or other critical failures in affected devices. This could compromise the functionality of essential IoT applications and devices, making it a significant risk for users and manufacturers alike.

Put simply

Think of it like a restaurant where the chef accepts 'special requests' without checking if the orders are valid. If a negative index request slips in, it could throw off the entire kitchen, leading to unexpected and potentially messy consequences! This vulnerability arises from a lack of checks for negative index values during user input processing in Snapdragon components, allowing a buffer underflow. This condition can lead to memory corruption and unpredictable application behavior.

What to do

An attacker could exploit this issue to trigger unpredictable behavior, potentially leading to crashes or other critical failures in affected devices. This could compromise the functionality of essential IoT applications and devices, making it a significant risk for users and manufacturers alike. Immediate action is needed! Ensure you update to the latest firmware version addressing CVE-2021-1916. Additionally, implement input validation checks to prevent negative indices from being processed in your applications. You've got this! By taking these steps, you'll boost your security and keep your devices safe. 🛡️

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00796 · 56.0th percentile
Published
2021-09-08T11:25Z
EPSS history
Timeline
  • 08 SEP 11:25Z
    Possible buffer underflow due to lack of check for negative indices values when processing user provided input in Snapdragon Auto, Snapdragon Compute…
    cvelistv5