CVE-2022-0185KEV · OVERDUECWE-190

Linux Kernel Heap-Based Buffer Overflow Vulnerability

High · published February 11, 2022

Patch now

Confirmed exploited, and the score agrees

CVSS calls it high at 8.4. It is confirmed in active exploitation. It sits in the 97.9th percentile for exploit probability.

772
days past CISA
deadline
CVSS v3.1
8.4
EPSS
25%
Percentile
97.9
In the wild
Confirmed
What it is

⚠️ A sneaky heap-based buffer overflow in the Linux kernel could let local users gain elevated privileges! This flaw is like a crafty magician turning a simple trick into a full show of power! 🎩✨ Think of it as a restaurant where a waiter can sneak into the kitchen without permission just by using the old door that was never properly locked. If the kitchen staff aren't paying attention, that waiter could suddenly start cooking up whatever they want! An unprivileged user could exploit this vulnerability to escalate their privileges, giving them control over the system like a phantom chef running the entire kitchen. This could lead to unauthorized access, data manipulation, or even taking the whole system hostage – an absolute nightmare for security!

Put simply

Think of it as a restaurant where a waiter can sneak into the kitchen without permission just by using the old door that was never properly locked. If the kitchen staff aren't paying attention, that waiter could suddenly start cooking up whatever they want! CVE-2022-0185 is a heap-based buffer overflow flaw in the legacy_parse_param function of the Linux kernel's Filesystem Context functionality, which improperly verifies parameter lengths, allowing local users (with correct privileges) to escalate their permissions.

What to do

An unprivileged user could exploit this vulnerability to escalate their privileges, giving them control over the system like a phantom chef running the entire kitchen. This could lead to unauthorized access, data manipulation, or even taking the whole system hostage – an absolute nightmare for security! To protect against this vulnerability, upgrade your Linux kernel to the latest version that contains the fix for CVE-2022-0185. It's vital to ensure that unprivileged user namespaces are disabled if they aren’t needed, and review system configurations to minimize exposure. You've got this! Follow these steps, and you'll keep your system safe and sound! 🛡️✨

The record
Technical detail
CVSS v3.1
8.4 · HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.25151 · 97.9th percentile
Weakness
CWE-190 · Integer Overflow or Wraparound
Published
2022-02-11T17:40Z
KEV added
2024-08-21 · due 2024-09-11
EPSS history
Timeline
  • 21 AUG 00:00Z
    Added to CISA KEV — remediate by Sep 11
    kev
  • 11 FEB 17:40Z
    A heap-based buffer overflow flaw was found in the way the legacy_parse_param function in the Filesystem Context functionality of the Linux kernel verified the…
    cvelistv5