CVE-2021-26461CWE-190

malloc, realloc and memalign implementations are vulnerable to integer wrap-arounds

published June 21, 2021

CVSS
—
EPSS
5%
Percentile
92.2
In the wild
Unconfirmed
What it is

⚠️ A sneaky integer wrap-around lurks in Apache Nuttx before version 10.1.0! Think twice before you let that memory allocation go unchecked! 🤔 Imagine a restaurant where the chef miscalculates how many ingredients he has — if he accidentally assumes he has more than he actually does, he might make too much food, leading to chaos in the kitchen! Similarly, this vulnerability can lead to unexpected memory behavior and crashes. An attacker could exploit this flaw to manipulate memory allocation, potentially triggering a crash or even executing arbitrary code. The consequences? Your system could behave erratically or become a tasty target for unwanted code injections!

Put simply

Imagine a restaurant where the chef miscalculates how many ingredients he has — if he accidentally assumes he has more than he actually does, he might make too much food, leading to chaos in the kitchen! Similarly, this vulnerability can lead to unexpected memory behavior and crashes. The integer wrap-around in the malloc, realloc, and memalign functions allows attackers to allocate unexpected amounts of memory, leading to improper memory usage and unpredictable behavior within applications using Apache Nuttx.

What to do

An attacker could exploit this flaw to manipulate memory allocation, potentially triggering a crash or even executing arbitrary code. The consequences? Your system could behave erratically or become a tasty target for unwanted code injections! Upgrade Apache Nuttx to version 10.1.0 or later to mitigate this vulnerability. Additionally, ensure that you validate memory allocations in your code to prevent potential exploitation. Double-check your memory usage practices for further protection! You've got this! Follow these steps, and you'll keep your system secure and running smoothly! 🛡️

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.05038 · 92.2th percentile
Weakness
CWE-190 · Integer Overflow or Wraparound
Published
2021-06-21T17:10Z
EPSS history
Timeline
  • 21 JUN 17:10Z
    malloc, realloc and memalign implementations are vulnerable to integer wrap-arounds
    cvelistv5