CVE-2023-21164

In DevmemIntMapPMR of devicemem_server.c, there is a possible arbitrary code execution due to a use after free

published December 4, 2023

CVSS
—
EPSS
0%
Percentile
34.6
In the wild
Unconfirmed
What it is

⚠️ A sneaky use after free vulnerability lurks in DevmemIntMapPMR that allows arbitrary code execution without any user interaction! Think of it like a restaurant that keeps serving a dish long after the ingredients have spoiled — it's a recipe for disaster! An attacker can exploit leftover data in memory, leading to unauthorized actions in the kernel. If an attacker takes advantage of this vulnerability, they could execute arbitrary code with elevated privileges in the kernel. This means they could potentially manipulate system processes, access sensitive information, or even take control of the entire machine - all without needing any special permissions or user interaction. That's a recipe for chaos!

Put simply

Think of it like a restaurant that keeps serving a dish long after the ingredients have spoiled — it's a recipe for disaster! An attacker can exploit leftover data in memory, leading to unauthorized actions in the kernel. This vulnerability in devicemem_server.c is triggered by a use-after-free condition that permits arbitrary code execution. Essentially, it allows attackers to misuse memory that has already been released, potentially escalating their privileges within the system.

What to do

If an attacker takes advantage of this vulnerability, they could execute arbitrary code with elevated privileges in the kernel. This means they could potentially manipulate system processes, access sensitive information, or even take control of the entire machine - all without needing any special permissions or user interaction. That's a recipe for chaos! To mitigate this risk, ensure you apply patches as soon as they become available, and regularly audit your system for vulnerabilities. Staying updated with the latest releases from your kernel provider is crucial for maintaining security. 🛡️ You’ve got this! With the right actions, you can keep your system safe and sound. 💪✨

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.00414 · 34.6th percentile
Published
2023-12-04T22:40Z
EPSS history
Timeline
  • 04 DEC 22:40Z
    In DevmemIntMapPMR of devicemem_server.c, there is a possible arbitrary code execution due to a use after free
    cvelistv5