REDHAT-BUG-2402649: Use After Free
Use-after-free vulnerability in the X11 Present extension implementation of the X.Org X server and Xwayland. The flaw occurs when processing notifications after presenting a pixmap; if an error happens, a dangling pointer remains in the error path. This leads to a use-after-free when destroying notification structures later. A remote attacker can exploit this via crafted X11 requests to trigger memory corruption or denial of service. The issue has existed since Xorg 1.15.
Affected Software
Event History
Frequently Asked Questions
What is the severity of REDHAT-BUG-2402649?
The severity of REDHAT-BUG-2402649 is considered high due to the potential for exploitation through use-after-free vulnerabilities.
How do I fix REDHAT-BUG-2402649?
To fix REDHAT-BUG-2402649, update to the latest versions of X.Org X server or Xwayland that address the vulnerability.
What are the affected versions of REDHAT-BUG-2402649?
The affected versions of REDHAT-BUG-2402649 are X.Org X server and Xwayland version 1.15 and later.
What systems are impacted by REDHAT-BUG-2402649?
REDHAT-BUG-2402649 impacts systems running X.Org X server or Xwayland, particularly those that utilize the X11 Present extension.
What type of vulnerability is REDHAT-BUG-2402649?
REDHAT-BUG-2402649 is a use-after-free vulnerability that can lead to undefined behavior or crashes.