A flaw was found in the Linux kernel that swiotlb_print_info() function in lib/swiotlb.c allows local users to obtain some kernel address information by reading the kernel log (dmesg). This address is not useful to commit a further attack. References: https://github.com/johnsonwangqize/cve-linux/blob/master/%20CVE-2018-5953.md An upstream patch: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ad67b74d2469d
Notes: The kernel addresses revealed in the kernel log are of the kernel objects which are allocated dynamically and does not give an information about the kernel code or objects location and so are useless for a possible attacker.