The user-supplied index into the adapters array needs to be checked, or an out-of-bounds kernel pointer could be accessed and used, leading to potentially exploitable memory corruption.
Signed-off-by: Dan Rosenberg <[email protected]> --- sound/pci/asihpi/hpioctl.c | 5 +++++ 1 files changed, 5 insertions(+), 0 deletions(-) diff --git a/sound/pci/asihpi/hpioctl.c b/sound/pci/asihpi/hpioctl.c index 22dbd91..448dd01 100644 --- a/sound/pci/asihpi/hpioctl.c +++ b/sound/pci/asihpi/hpioctl.c @@ -155,6 +155,11 @@ long asihpi_hpi_ioctl(struct file *file, unsigned int cmd, unsigned long arg) goto out; } + if (hm->h.adapter_index >= HPI_MAX_ADAPTERS) { + err = -EINVAL; + goto out; + } + pa = &adapters[hm->h.adapter_index]; hr->h.size = 0; if (hm->h.object == HPI_OBJ_SUBSYSTEM) { _______________________________________________ stable mailing list [email protected] http://linux.kernel.org/mailman/listinfo/stable
