Overview
About vulnerability
In the Linux kernel, the following vulnerability has been resolved:
ftrace: Fix regression with module command in stack_trace_filter
When executing the following command:
echo “write*:mod:ext3” > /sys/kernel/tracing/stack_trace_filter
The current mod command causes a null pointer dereference. While commit 0f17976568b3f (“ftrace: Fix regression with module command in stack_trace_filter”) has addressed part of the issue, it left a corner case unhandled, which still results in a kernel crash.
Details
- Affected product:
- AlmaLinux 9.2 ESU , CentOS 8.4 ELS , CentOS 8.5 ELS , CentOS Stream 8 ELS , Oracle Linux 7 ELS , Ubuntu 16.04 ELS , Ubuntu 18.04 ELS
- Affected packages:
- linux @ 4.15.0 (+8 more)
In the Linux kernel, the following vulnerability has been resolved:
ftrace: Fix regression with module command in stack_trace_filter
When executing the following command:
echo “write*:mod:ext3” > /sys/kernel/tracing/stack_trace_filter
The current mod command causes a null pointer dereference. While commit 0f17976568b3f (“ftrace: Fix regression with module command in stack_trace_filter”) has addressed part of the issue, it left a corner case unhandled, which still results in a kernel crash.