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| author | Martynas Pumputis <m@lambda.lt> | 2018-11-23 19:43:26 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-12-17 11:24:35 +0300 |
| commit | 6bfebedaa8100b20854fd09820143a3dd5d6539c (patch) | |
| tree | aede97f1d68724d971456a7e9dcbc4ba41ce265f /drivers/fsi | |
| parent | 4c7d50c23a88f3e655bf241c4be67d6716fa87a6 (diff) | |
| download | linux-6bfebedaa8100b20854fd09820143a3dd5d6539c.tar.xz | |
bpf: fix check of allowed specifiers in bpf_trace_printk
[ Upstream commit 1efb6ee3edea57f57f9fb05dba8dcb3f7333f61f ]
A format string consisting of "%p" or "%s" followed by an invalid
specifier (e.g. "%p%\n" or "%s%") could pass the check which
would make format_decode (lib/vsprintf.c) to warn.
Fixes: 9c959c863f82 ("tracing: Allow BPF programs to call bpf_trace_printk()")
Reported-by: syzbot+1ec5c5ec949c4adaa0c4@syzkaller.appspotmail.com
Signed-off-by: Martynas Pumputis <m@lambda.lt>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/fsi')
0 files changed, 0 insertions, 0 deletions