Re: [PATCH] video: fbdev: udlfb: Fix use after free on dlfb_usb_probe error path
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From: Bartlomiej Zolnierkiewicz <hidden>
Date: 2017-08-21 14:36:00
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On Friday, August 11, 2017 03:59:01 PM Anton Vasilyev wrote:
If dlfb_usb_probe drops to error path then there is only one kref_init() call and no kref_get(), so second kref_put() leads to use after free. The patch removes superfluous kref_put on dlfb_usb_probe error path. Found by Linux Driver Verification project (linuxtesting.org). Signed-off-by: Anton Vasilyev <redacted>
Patch queued for 4.14, thanks. Best regards, -- Bartlomiej Zolnierkiewicz Samsung R&D Institute Poland Samsung Electronics