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| author | Alexei Starovoitov <ast@kernel.org> | 2018-01-29 02:49:00 +0100 |
|---|---|---|
| committer | Michael Bestas <mkbestas@lineageos.org> | 2022-04-19 00:51:21 +0300 |
| commit | a921e0fa5ec05a1108c4da0be8ceade99e2e26a7 (patch) | |
| tree | 6058efa8f9008bfad8aee970c4ad9bad12c9b8f1 /kernel/bpf/arraymap.c | |
| parent | 0d9c494ce097a84de4ff4993312b31ee43959d5b (diff) | |
bpf: fix 32-bit divide by zero
[ upstream commit 68fda450a7df51cff9e5a4d4a4d9d0d5f2589153 ]
due to some JITs doing if (src_reg == 0) check in 64-bit mode
for div/mod operations mask upper 32-bits of src register
before doing the check
Fixes: 622582786c9e ("net: filter: x86: internal BPF JIT")
Fixes: 7a12b5031c6b ("sparc64: Add eBPF JIT.")
Reported-by: syzbot+48340bb518e88849e2e3@syzkaller.appspotmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Chatur27 <jasonbright2709@gmail.com>
Diffstat (limited to 'kernel/bpf/arraymap.c')
0 files changed, 0 insertions, 0 deletions