Commit 8f3fafc9 authored by Scott Bauer's avatar Scott Bauer Committed by Jens Axboe
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cdrom: Fix info leak/OOB read in cdrom_ioctl_drive_status

Like d88b6d04

: "cdrom: information leak in cdrom_ioctl_media_changed()"

There is another cast from unsigned long to int which causes
a bounds check to fail with specially crafted input. The value is
then used as an index in the slot array in cdrom_slot_status().
Signed-off-by: default avatarScott Bauer <>
Signed-off-by: default avatarScott Bauer <>
Signed-off-by: default avatarJens Axboe <>
parent db193954
......@@ -2546,7 +2546,7 @@ static int cdrom_ioctl_drive_status(struct cdrom_device_info *cdi,
(arg == CDSL_CURRENT || arg == CDSL_NONE))
return cdi->ops->drive_status(cdi, CDSL_CURRENT);
if (((int)arg >= cdi->capacity))
if (arg >= cdi->capacity)
return -EINVAL;
return cdrom_slot_status(cdi, arg);
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