CVE-2026-126915
Description
A flaw was found in the Skia graphics library in chromium-browser. This vulnerability allows arbitrary code execution outside the browser sandbox. Due to the use of an uninitialized variable, a remote attacker who has already compromised the renderer process can bypass security isolation mechanisms via a crafted HTML page and execute unauthorized code on the host system.
Statement
Red Hat rates the impact of this vulnerability as Important because an attacker can escape browser sandbox containment and achieve host-level code execution. The flaw is not classified as Critical because exploitation requires a multi-stage attack: an adversary must first establish control over a renderer process and entice a user into visiting malicious web content. In typical desktop deployments, this defense-in-depth failure exposes user privileges on the workstation once the initial rendering layer is breached.
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; Read Application Data
When reusing a resource such as memory or a program variable, the original contents may not have been cleared before it is sent to an untrusted party.
Availability
Technical Impact: DoS: Crash, Exit, or Restart; DoS: Instability
The uninitialized resource may contain values that cause program flow to change in ways that the programmer did not intend, possibly leading to a crash.
Other
Technical Impact: Unexpected State; Varies by Context
The consequences vary depending on the type of resource and how it is used within the product.
Frequently Asked Questions
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