CVE-2026-126853
Description
A flaw was found in Skia in Chromium. An uninitialized resource vulnerability allows a remote attacker who has already compromised the renderer process to read memory outside the security sandbox by convincing a user to visit a crafted HTML page. Successful exploitation results in information disclosure, potentially exposing sensitive data beyond the restricted browser environment.
Statement
This vulnerability is rated as Important because an attacker can break process isolation boundaries to access memory outside the restricted environment, resulting in significant confidentiality impact. In Red Hat Enterprise Linux workstation and desktop environments running Chromium, the browser relies on sandboxing to isolate untrusted web content. Although exploitation requires convincing a user to view a malicious page and presumes prior compromise of the renderer subsystem, crossing sandbox barriers to disclose host memory warrants an elevated severity.
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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