CVE-2026-126901
Description
A flaw was found in chromium-browser. A remote attacker could execute arbitrary code within the sandbox environment by enticing a user to visit a specially crafted HTML page. This issue is caused by a use-after-free vulnerability in the PDF (Portable Document Format) component, where memory is referenced after being released. Successful exploitation could lead to memory corruption and compromise of the browser process.
Statement
Red Hat Product Security rates this vulnerability as having an Important impact because an unauthenticated remote adversary can achieve arbitrary code execution by enticing a user to view hostile web content. In standard desktop environments where Chromium is deployed, exploitation requires active user interaction to load a manipulated web document. Although code execution occurs within the browser process, the risk does not reach Critical severity because Chromium's sandbox confines the exploit, preventing direct access to the underlying operating system without an additional sandbox breakout.
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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