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libbpf: Improve ELF relo sanitization
authorAndrii Nakryiko <andrii@kernel.org>
Wed, 3 Nov 2021 17:32:13 +0000 (10:32 -0700)
committerAlexei Starovoitov <ast@kernel.org>
Wed, 3 Nov 2021 20:25:37 +0000 (13:25 -0700)
commita8b6026a1ea5d3f0dd0ba24d0aa6216979455c14
tree64263576d847b957e2aecf13e6a9438afa6b852dtree | snapshot
parentf54e1228b1d1c89336350e274f2be51f23c4bbdccommit | diff
libbpf: Improve ELF relo sanitization

Add few sanity checks for relocations to prevent div-by-zero and
out-of-bounds array accesses in libbpf.

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Yonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/bpf/20211103173213.1376990-6-andrii@kernel.org
tools/lib/bpf/libbpf.c diff | blob | history
Linux Kernel Source Tree.