Fixes CVE-2018-10887 and CVE-2018-10888: out-of-bounds reads when
reading objects from a packfile.
Also fixes out-of-bounds reads when processing smart-protocol "ng"
packets (no known CVE yet).
Drop upstream patch.
Cc: Nicolas Cavallari <nicolas.cavallari@green-communications.fr>
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Reviewed-By: Nicolas Cavallari <nicolas.cavallari@green-communications.fr>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>