The aoedisk_debugfs_show function in drivers/block/aoe/aoeblk.c in the Linux kernel through 4.16.4rc4 allows local users to obtain sensitive address information by reading ffree: lines in a debugfs file.
Information written to log files can be of a sensitive nature and give valuable guidance to an attacker or expose sensitive user information.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Linux_kernel | Linux | * | 4.15 (including) |
| Linux_kernel | Linux | 4.16-rc1 (including) | 4.16-rc1 (including) |
| Linux_kernel | Linux | 4.16-rc2 (including) | 4.16-rc2 (including) |
| Linux_kernel | Linux | 4.16-rc3 (including) | 4.16-rc3 (including) |
| Linux_kernel | Linux | 4.16-rc4 (including) | 4.16-rc4 (including) |
While logging all information may be helpful during development stages, it is important that logging levels be set appropriately before a product ships so that sensitive user data and system information are not accidentally exposed to potential attackers. Different log files may be produced and stored for: