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| author | Geert Uytterhoeven | 2018-10-11 10:42:49 +0200 |
|---|---|---|
| committer | Petr Mladek | 2018-10-12 11:26:55 +0200 |
| commit | 431bca24308c5a82575571023a7128a881f716b2 (patch) | |
| tree | d6292005fad5736aac758907ae6b1f8370b95efb /lib/seq_buf.c | |
| parent | lib/vsprintf: Hash legacy clock addresses (diff) | |
| download | kernel-qcow2-linux-431bca24308c5a82575571023a7128a881f716b2.tar.gz kernel-qcow2-linux-431bca24308c5a82575571023a7128a881f716b2.tar.xz kernel-qcow2-linux-431bca24308c5a82575571023a7128a881f716b2.zip | |
lib/vsprintf: Hash printed address for netdev bits fallback
The handler for "%pN" falls back to printing the raw pointer value when
using a different format than the (sole supported) special format
"%pNF", potentially leaking sensitive information regarding the kernel
layout in memory.
Avoid this leak by printing the hashed address instead.
Note that there are no in-tree users of the fallback.
Fixes: ad67b74d2469d9b8 ("printk: hash addresses printed with %p")
Link: http://lkml.kernel.org/r/20181011084249.4520-4-geert+renesas@glider.be
To: "Tobin C . Harding" <me@tobin.cc>
To: Andrew Morton <akpm@linux-foundation.org>
To: Jonathan Corbet <corbet@lwn.net>
Cc: linux-doc@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Petr Mladek <pmladek@suse.com>
Diffstat (limited to 'lib/seq_buf.c')
0 files changed, 0 insertions, 0 deletions