Enable checks on linked list manipulation
An XCCDF Rule
Description
Enable this to turn on extended checks in the linked-list walking routines.
The configuration that was used to build kernel is available at /boot/config-*.
To check the configuration value for CONFIG_DEBUG_LIST, run the following command:
grep CONFIG_DEBUG_LIST /boot/config-*
For each kernel installed, a line with value "y" should be returned.
warning alert: Warning
There is no remediation for this besides re-compiling the kernel with the appropriate value for the config.
Rationale
This add sanity checks to manipulation of linked lists structures in the kernel and may prevent exploits such as CVE-2017-1661, where a race condition and simultaneos operations caused a list to corrupt.
- ID
- xccdf_org.ssgproject.content_rule_kernel_config_debug_list
- Severity
- Low
- References
- Updated