CVE-2026-126891
Description
An use after free flaw was found in the V8 component of the Chromium browser.
Upstream bug(s):
https://code.google.com/p/chromium/issues/detail?id=575939904 https://code.google.com/p/chromium/issues/detail?id=126891
Statement
Red Hat Product Security rates the severity of this flaw as determined by the Google Chrome Security Advisory.
Mitigation
Avoid accessing untrusted websites or processing untrusted HTML content within Chromium. Ensure that built-in browser sandboxing mechanisms remain active and are not bypassed.
If Chromium is not required on the system, remove the package to eliminate exposure:
# dnf remove chromium-browser
Caveats: Removing the chromium-browser package will make the browser unavailable and may affect user desktop environments or workflows that depend on it for web rendering.
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.
Frequently Asked Questions
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