From: Mark Brown broonie@kernel.org
stable inclusion from stable-v4.19.228 commit 7659f25a80e6affb784b690df8994b79b4212fd4 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IA72KY CVE: CVE-2022-48736
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?i...
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commit 4cf28e9ae6e2e11a044be1bcbcfa1b0d8675fe4d upstream.
We don't currently validate that the values being set are within the range we advertised to userspace as being valid, do so and reject any values that are out of range.
Signed-off-by: Mark Brown broonie@kernel.org Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20220124153253.3548853-4-broonie@kernel.org Signed-off-by: Mark Brown broonie@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Liu Chuang liuchuang40@huawei.com --- sound/soc/soc-ops.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/sound/soc/soc-ops.c b/sound/soc/soc-ops.c index 3980b1727c49..ef8fd331526b 100644 --- a/sound/soc/soc-ops.c +++ b/sound/soc/soc-ops.c @@ -910,6 +910,8 @@ int snd_soc_put_xr_sx(struct snd_kcontrol *kcontrol, unsigned int i, regval, regmask; int err;
+ if (val < mc->min || val > mc->max) + return -EINVAL; if (invert) val = max - val; val &= mask;