diff options
| author | Mark Langsdorf <mlangsdo@redhat.com> | 2021-04-27 13:54:33 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-05-22 10:38:16 +0200 |
| commit | 3a0cadd433491b7277fc38d100fdce0fddddd983 (patch) | |
| tree | 7aa95c0044e5f1e27a3c91d577115be0862d93ab /tools/perf/scripts | |
| parent | 1d53ca5d131074c925ce38361fb0376d3bf7e394 (diff) | |
ACPI: custom_method: fix a possible memory leak
commit 1cfd8956437f842836e8a066b40d1ec2fc01f13e upstream.
In cm_write(), if the 'buf' is allocated memory but not fully consumed,
it is possible to reallocate the buffer without freeing it by passing
'*ppos' as 0 on a subsequent call.
Add an explicit kfree() before kzalloc() to prevent the possible memory
leak.
Fixes: 526b4af47f44 ("ACPI: Split out custom_method functionality into an own driver")
Signed-off-by: Mark Langsdorf <mlangsdo@redhat.com>
Cc: 5.4+ <stable@vger.kernel.org> # 5.4+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'tools/perf/scripts')
0 files changed, 0 insertions, 0 deletions