CVE-2026-19147 in Chrome
Summary
by MITRE • 08/07/2026
Use after free in Aura in Google Chrome on Linux prior to 151.0.7922.109 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: High)
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Analysis
by VulDB Data Team • 08/07/2026
This vulnerability represents a critical use-after-free condition within the Aura windowing system component of Google Chrome on Linux platforms. The flaw exists in the handling of memory management operations within the renderer process, where freed memory blocks are accessed after being deallocated, creating potential exploitation pathways for malicious actors who have already compromised the browser's sandboxed environment. The vulnerability is classified as high severity by Chromium security standards due to its potential for privilege escalation and sandbox bypass capabilities.
The technical implementation of this use-after-free flaw occurs within the Aura windowing system which manages graphical user interface elements in Chrome's Linux implementation. When processing crafted HTML content, the renderer process fails to properly validate memory references after object deallocation, allowing attackers to manipulate freed memory locations through carefully constructed web pages. This memory corruption can occur during the handling of DOM objects or graphics rendering operations where the system attempts to access memory that has already been released back to the heap. The vulnerability specifically affects Chrome versions prior to 151.0.7922.109, indicating a targeted fix scope for this particular memory management flaw.
The operational impact of this vulnerability extends beyond typical browser exploitation scenarios as it provides a pathway for remote attackers who have already gained access to the renderer process to potentially escape the sandbox boundaries that normally isolate browser components from the underlying operating system. This represents a significant escalation risk where initial compromise of the browser's renderer can be leveraged into broader system access. The attack vector requires only a crafted HTML page delivered through web-based channels, making it particularly dangerous for users who encounter malicious content in web browsing sessions.
Security researchers have identified this vulnerability as aligning with common weakness enumerations related to improper handling of memory resources and sandbox escape mechanisms. The flaw demonstrates characteristics consistent with attack patterns documented in the attack technique catalog under techniques such as privilege escalation and sandbox bypass operations. Organizations should prioritize patching affected Chrome installations immediately, as the vulnerability's exploitation potential increases significantly when combined with other attack vectors that might already have compromised renderer processes. The fix implemented in version 151.0.7922.109 addresses memory management validation checks within the Aura subsystem to prevent access to freed memory blocks during object lifecycle operations.
Mitigation strategies should include immediate deployment of the patched Chrome version across all affected systems, implementation of additional web filtering measures to reduce exposure to malicious HTML content, and monitoring for potential exploitation attempts through network traffic analysis. System administrators should also consider implementing process isolation techniques and regular security assessments to identify potential compromise indicators that may precede or accompany exploitation of this vulnerability. The remediation approach must address both the immediate technical fix and broader security posture improvements to prevent similar memory corruption vulnerabilities from being exploited in the future, particularly focusing on strengthening memory management practices within browser rendering engines.