CVE-2021-39993

There is an Integer overflow vulnerability with ACPU in smartphones

published January 7, 2022

CVSS
—
EPSS
1%
Percentile
54.7
In the wild
Unconfirmed
What it is

⚠️ An integer overflow in ACPU could lead to some unexpected surprises! Just like a vending machine malfunctioning when it gets too many coins, this bug can spark some out-of-bounds access issues. 🤯 Think of this overflow like a restaurant that has a limit on how many tables they can take. If diners keep pushing in extra chairs, chaos ensues! Similarly, the ACPU can't handle the excess, leading to potential access violations that could wreak havoc on your device. If exploited, this vulnerability could allow an attacker to access sensitive memory areas, potentially compromising your smartphone's functionality. While there's no known exploitation yet, the implications are serious enough to keep an eye on—after all, the longer a bug lurks, the more opportunities for mischief!

Put simply

Think of this overflow like a restaurant that has a limit on how many tables they can take. If diners keep pushing in extra chairs, chaos ensues! Similarly, the ACPU can't handle the excess, leading to potential access violations that could wreak havoc on your device. The integer overflow vulnerability in ACPU arises when a calculation exceeds the maximum limit for an integer, leading to out-of-bounds access. This could allow attackers to manipulate memory locations improperly, creating opportunities for unauthorized access and instability.

What to do

If exploited, this vulnerability could allow an attacker to access sensitive memory areas, potentially compromising your smartphone's functionality. While there's no known exploitation yet, the implications are serious enough to keep an eye on—after all, the longer a bug lurks, the more opportunities for mischief! While there isn't a specific patch available at the moment, it's crucial to monitor your devices for updates from manufacturers. Regularly check for firmware updates, and consider restricting app permissions to minimize risk. Staying proactive is key! You've got this! Keep your devices updated and stay vigilant to keep those virtual baddies at bay! 🛡️

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.00756 · 54.7th percentile
Published
2022-01-07T22:39Z
EPSS history
Timeline
  • 07 JAN 22:39Z
    There is an Integer overflow vulnerability with ACPU in smartphones
    cvelistv5