Linux kernel is vulnerable to denial of service. Linux fair scheduler has a use-after-free in show_numa_stats() because NUMA fault statistics are inappropriately freed. A flaw was found in the Linux kernels implementation of displaying NUMA statistics, where displaying the scheduler statistics could trigger a use-after-free in show_numa_stats() and display the kernel memory to userspace. The highest threat from this vulnerability is to system availability.
access.redhat.com/errata/RHSA-2021:2726
access.redhat.com/security/updates/classification/#important
access.redhat.com/security/vulnerabilities/RHSB-2021-006
bugs.chromium.org/p/project-zero/issues/detail?id=1913
bugzilla.redhat.com/show_bug.cgi?id=1902788
cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.2.6
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=16d51a590a8ce3befb1308e0e7ab77f3b661af33