CVE-2026-126892
Description
A flaw was found in chromium-browser. This vulnerability allows a remote attacker to achieve arbitrary code execution within the sandbox environment. The issue stems from a use-after-free error in the MediaStream component, which can be triggered when a user is convinced to open a specially crafted HTML page.
Statement
This vulnerability is rated as Important rather than Moderate because successful exploitation grants an attacker arbitrary code execution capabilities within the browser renderer process. Although the impact is constrained by Chromium's multi-process sandbox architecture, it still presents substantial risk if chained with sandbox escape techniques on desktop environments. Exploitation requires user interaction, specifically enticing a target to navigate to untrusted web content.
Mitigation
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
Understanding the Weakness (CWE)
Confidentiality
Technical Impact: Read Memory
If the expired pointer is used in a read operation, an attacker might be able to control data read in by the application.
Availability
Technical Impact: DoS: Crash, Exit, or Restart
If the expired pointer references a memory location that is not accessible to the product, or points to a location that is "malformed" (such as NULL) or larger than expected by a read or write operation, then a crash may occur.
Integrity,Confidentiality,Availability
Technical Impact: Execute Unauthorized Code or Commands
If the expired pointer is used in a function call, or points to unexpected data in a write operation, then code execution may be possible.
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