VULHUB ™

The MIT-SHM extension for XFree86 provides System V shared memory to X processes. Various operating systems shipped with XFree86 versions prior to 4.1 have support for this shared memory scheme enabled. This configuration is vulnerable to a problem that allows local X users to gain read and write access to any shared memory segment on the system. This could allow interference with other users and possibly elevation of privileges, depending on the context. Other configurations of XFree86 may be vulnerable to this problem, depending on whether or not System V shared memory and MIT-SHM has been enabled.

The MIT-SHM extension for XFree86 provides System V shared memory to X processes. Various operating systems shipped with XFree86 versions prior to 4.1 have support for this shared memory scheme enabled. This configuration is vulnerable to a problem that allows local X users to gain read and write access to any shared memory segment on the system. This could allow interference with other users and possibly elevation of privileges, depending on the context. Other configurations of XFree86 may be vulnerable to this problem, depending on whether or not System V shared memory and MIT-SHM has been enabled.