projects / linux.git / commit
? search:
summary | shortlog | log | commit | commitdiff | tree
(parent: 202702e) | patch
libbpf: Fix alen calculation in libbpf_nla_dump_errormsg()
authorIlya Leoshkevich <iii@linux.ibm.com>
Fri, 10 Feb 2023 00:12:01 +0000 (01:12 +0100)
committerAndrii Nakryiko <andrii@kernel.org>
Fri, 10 Feb 2023 23:27:22 +0000 (15:27 -0800)
commit17bcd27a08a21397698edf143084d7c87ce17946
tree7e28ab4b11d2a2b09dac570db9adad2bffaea2datree | snapshot
parent202702e890a41412a7de970b84a970ba1d5001c9commit | diff
libbpf: Fix alen calculation in libbpf_nla_dump_errormsg()

The code assumes that everything that comes after nlmsgerr are nlattrs.
When calculating their size, it does not account for the initial
nlmsghdr. This may lead to accessing uninitialized memory.

Fixes: bbf48c18ee0c ("libbpf: add error reporting in XDP")
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20230210001210.395194-8-iii@linux.ibm.com
tools/lib/bpf/nlattr.c diff | blob | history
ep93xx device tree rework repo: git://git.maquefel.me/linux.git