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authorChristian Poessinger <christian@poessinger.com>2019-01-03 16:38:56 +0100
committerChristian Poessinger <christian@poessinger.com>2019-01-03 16:40:27 +0100
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T1151: elevate permissions when accessing kernel ring buffer
The kernel syslog contains debugging information that is often useful during exploitation of other vulnerabilities, such as kernel heap addresses. Rather than futilely attempt to sanitize hundreds (or thousands) of printk statements and simultaneously cripple useful debugging functionality, it is far simpler to create an option that prevents unprivileged users from reading the syslog. For more information please refer to: https://lwn.net/Articles/414813/ (cherry picked from commit 11d91322beffcb4c420dc5e086782b20732ac6fe)
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