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05-Jan-2016 |
Samuel Tan <samueltan@google.com> |
[PATCH] UPSTREAM: Fix heap-based overflow in dhcp_envoption1
dhcp_optlen now returns the length of the data we can sanely work on given the
option definition and data length. Call dhcp_optlen in dhcp_envoption1 to take
into ensure these bounds are not overstepped. Fixes an issue reported by Nico
Golde where extra undersized data was present in the option. An example of this
would be an array of uint16's with a trailing byte.
http://roy.marples.name/projects/dhcpcd/ci/76a1609352263bd9?sbs=0
BUG: 26402253
Change-Id: Ic3c73277bb1cc09be08b3fbceecb97e2effd05ff
/external/dhcpcd-6.8.2/dhcp-common.h
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