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authorJohan Hovold <johan@kernel.org>2021-09-17 13:46:17 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2021-09-27 17:38:49 +0200
commita89936cce87d60766a75732a9e7e25c51164f47c (patch)
tree5137e9483176be894cf20f1e632bce278245cad9 /fs/qnx4
parent913581b8ae0646ebe2f23c57dab3c3ce69e980c3 (diff)
ipack: ipoctal: fix stack information leak
The tty driver name is used also after registering the driver and must specifically not be allocated on the stack to avoid leaking information to user space (or triggering an oops). Drivers should not try to encode topology information in the tty device name but this one snuck in through staging without anyone noticing and another driver has since copied this malpractice. Fixing the ABI is a separate issue, but this at least plugs the security hole. Fixes: ba4dc61fe8c5 ("Staging: ipack: add support for IP-OCTAL mezzanine board") Cc: stable@vger.kernel.org # 3.5 Acked-by: Samuel Iglesias Gonsalvez <siglesias@igalia.com> Signed-off-by: Johan Hovold <johan@kernel.org> Link: https://lore.kernel.org/r/20210917114622.5412-2-johan@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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