diff options
| author | Takashi Iwai <tiwai@suse.de> | 2018-04-24 07:50:50 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-05-02 07:53:41 -0700 |
| commit | bd54c1122356e73d2421097e82768b57a7f8b478 (patch) | |
| tree | e96f881c642c703df4a79a9e635b2c7eed54d466 /tools/perf/scripts/python | |
| parent | 8cff710ea7d3ae35bdc799ef0f09639ffa459965 (diff) | |
ALSA: hda: Hardening for potential Spectre v1
commit 69fa6f19b95597618ab30438a27b67ad93daa7c7 upstream.
As recently Smatch suggested, one place in HD-audio hwdep ioctl codes
may expand the array directly from the user-space value with
speculation:
sound/pci/hda/hda_local.h:467 get_wcaps() warn: potential spectre issue 'codec->wcaps'
As get_wcaps() itself is a fairly frequently called inline function,
and there is only one single call with a user-space value, we replace
only the latter one to open-code locally with array_index_nospec()
hardening in this patch.
BugLink: https://marc.info/?l=linux-kernel&m=152411496503418&w=2
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'tools/perf/scripts/python')
0 files changed, 0 insertions, 0 deletions