This fixes a bypass of SELinux' W^X protection via ptrace. For more details, see the commit messages of patches 2/3 and 3/3.
Jann Horn (3): fs/exec: don't force writing memory access mm: add LSM hook for writes to readonly memory selinux: require EXECMEM for forced ptrace poke drivers/gpu/drm/etnaviv/etnaviv_gem.c | 3 +- drivers/gpu/drm/i915/i915_gem_userptr.c | 2 +- drivers/infiniband/core/umem_odp.c | 4 +- fs/exec.c | 4 +- fs/proc/base.c | 68 +++++++++++++++++++++------- fs/proc/internal.h | 4 +- fs/proc/task_mmu.c | 4 +- fs/proc/task_nommu.c | 2 +- include/linux/lsm_hooks.h | 9 ++++ include/linux/mm.h | 12 ++++- include/linux/sched.h | 4 +- include/linux/security.h | 10 +++++ kernel/events/uprobes.c | 6 ++- kernel/fork.c | 6 ++- mm/gup.c | 80 +++++++++++++++++++++++++-------- mm/memory.c | 22 ++++++--- mm/nommu.c | 22 +++++---- mm/process_vm_access.c | 8 ++-- security/security.c | 8 ++++ security/selinux/hooks.c | 15 +++++++ security/tomoyo/domain.c | 2 +- virt/kvm/async_pf.c | 3 +- virt/kvm/kvm_main.c | 9 ++-- 23 files changed, 230 insertions(+), 77 deletions(-) -- 2.1.4
