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| author | Takashi Iwai <tiwai@suse.de> | 2018-04-24 08:50:50 +0300 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2018-04-25 11:37:46 +0300 |
| commit | 69fa6f19b95597618ab30438a27b67ad93daa7c7 (patch) | |
| tree | f8955b74773bf46e93e0e8c8293d59800504e1b4 /kernel/locking | |
| parent | 088e861edffb84879cf0c0d1b02eda078c3a0ffe (diff) | |
| download | linux-69fa6f19b95597618ab30438a27b67ad93daa7c7.tar.xz | |
ALSA: hda: Hardening for potential Spectre v1
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>
Diffstat (limited to 'kernel/locking')
0 files changed, 0 insertions, 0 deletions