This patch set addresses a set of security vulnerabilities in bpf verifier logic discovered by Jann Horn. All of the patches are candidates for 4.14 stable.
Alexei Starovoitov (1): bpf: fix integer overflows Edward Cree (1): bpf/verifier: fix bounds calculation on BPF_RSH Jann Horn (7): bpf: fix incorrect sign extension in check_alu_op() bpf: fix incorrect tracking of register size truncation bpf: fix 32-bit ALU op verification bpf: fix missing error return in check_stack_boundary() bpf: force strict alignment checks for stack pointers bpf: don't prune branches when a scalar is replaced with a pointer selftests/bpf: add tests for recent bugfixes include/linux/bpf_verifier.h | 4 +- kernel/bpf/verifier.c | 175 ++++++--- tools/testing/selftests/bpf/test_verifier.c | 549 +++++++++++++++++++++++++++- 3 files changed, 661 insertions(+), 67 deletions(-) -- 2.9.5
