CVE-2025-58150

x86: buffer overrun with shadow paging + tracing

High · published January 28, 2026

CVSS v3.1
8.8
EPSS
0%
Percentile
3.4
In the wild
Unconfirmed
What it is

⚡ A surprise data overflow is hiding in the shadows! The tracing code allows guest-controlled data to write beyond its limits — think of it as a guest at a dinner party who takes more than their share of the food! Imagine inviting friends over for a potluck. If one guest brings a massive casserole and the dish is too small, it could spill everywhere and ruin the whole event. That’s similar to how the missing bounding on these variables can lead to unexpected outcomes when the input exceeds its intended size. An attacker could potentially take advantage of this flaw to corrupt memory, leading to unpredictable behavior of the system. This could result in compromised performance or even cause the system to crash, creating chaos in an environment where stability is key.

Put simply

Imagine inviting friends over for a potluck. If one guest brings a massive casserole and the dish is too small, it could spill everywhere and ruin the whole event. That’s similar to how the missing bounding on these variables can lead to unexpected outcomes when the input exceeds its intended size. This vulnerability is due to the shadow mode tracing code that uses per-CPU variables. It fails to properly limit writes with guest-controlled data, allowing oversized inputs to overwrite adjacent memory.

What to do

An attacker could potentially take advantage of this flaw to corrupt memory, leading to unpredictable behavior of the system. This could result in compromised performance or even cause the system to crash, creating chaos in an environment where stability is key. To mitigate this risk, developers should ensure patches are applied promptly, especially when updates are released that specifically address this vulnerability. Additionally, implement strict input validation to prevent oversized data writes from becoming an issue in the first place. You've got this! By addressing this vulnerability, you're one step closer to securing your system and keeping those dinner parties drama-free! 🛡️

The record
Technical detail
CVSS v3.1
8.8 · HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00145 · 3.4th percentile
Published
2026-01-28T15:33Z
EPSS history
Timeline
  • 28 JAN 15:33Z
    x86: buffer overrun with shadow paging + tracing
    cvelistv5