The check_stack_boundary function in kernel/bpf/verifier.c in the Linux kernel before 4.14.9 allows local users to cause a denial of service (memory corruption) or possibly have unspecified other impact by leveraging mishandling of invalid variable stack read operations.
The check_stack_boundary function in kernel/bpf/verifier.c in the Linux kernel before 4.14.9 allows local users to cause a denial of service (memory corruption) or possibly have unspecified other impact by leveraging mishandling of invalid variable stack read operations.
https://bugs.chromium.org/p/project-zero/issues/detail?id=1454 http://www.openwall.com/lists/oss-security/2017/12/21/2 https://git.kernel.org/linus/ea25f914dc164c8d56b36147ecc86bc65f83c469
Workaround by disabling unprivileged bpf: sysctl -w kernel.unprivileged_bpf_disabled=1
Vulmon