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| author | Hans de Goede <hdegoede@redhat.com> | 2021-08-26 16:08:22 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-09-22 11:48:01 +0200 |
| commit | 942a39041bc579902069eed9b8b174deefe41c68 (patch) | |
| tree | 4f36af9d3be9b1af65a01c6716a15603024286ae /drivers/platform/x86 | |
| parent | 0cd59378234072a71789aeb411a6ae8cce187a34 (diff) | |
| download | linux-stable-942a39041bc579902069eed9b8b174deefe41c68.tar.gz linux-stable-942a39041bc579902069eed9b8b174deefe41c68.tar.bz2 linux-stable-942a39041bc579902069eed9b8b174deefe41c68.zip | |
platform/x86: dell-smbios-wmi: Add missing kfree in error-exit from run_smbios_call
[ Upstream commit 0487d4fc42d7f31a56cfd9e2237f9ebd889e6112 ]
As pointed out be Kees Cook if we return -EIO because the
obj->type != ACPI_TYPE_BUFFER, then we must kfree the
output buffer before the return.
Fixes: 1a258e670434 ("platform/x86: dell-smbios-wmi: Add new WMI dispatcher driver")
Reported-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20210826140822.71198-1-hdegoede@redhat.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/platform/x86')
| -rw-r--r-- | drivers/platform/x86/dell-smbios-wmi.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/platform/x86/dell-smbios-wmi.c b/drivers/platform/x86/dell-smbios-wmi.c index ccccce9b67ef..0ebcf412f6ca 100644 --- a/drivers/platform/x86/dell-smbios-wmi.c +++ b/drivers/platform/x86/dell-smbios-wmi.c @@ -72,6 +72,7 @@ static int run_smbios_call(struct wmi_device *wdev) if (obj->type == ACPI_TYPE_INTEGER) dev_dbg(&wdev->dev, "SMBIOS call failed: %llu\n", obj->integer.value); + kfree(output.pointer); return -EIO; } memcpy(&priv->buf->std, obj->buffer.pointer, obj->buffer.length); |