Arjun Shankar 9c443ac455 socket: Check lengths before advancing pointer in CMSG_NXTHDR ... The inline and library functions that the CMSG_NXTHDR macro may expand to increment the pointer to the header before checking the stride of the increment against available space. Since C only allows incrementing pointers to one past the end of an array, the increment must be done after a length check. This commit fixes that and includes a regression test for CMSG_FIRSTHDR and CMSG_NXTHDR. The Linux, Hurd, and generic headers are all changed. Tested on Linux on armv7hl, i686, x86_64, aarch64, ppc64le, and s390x. [BZ #28846] Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>		2022-08-02 11:10:25 +02:00
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bits
sys
accept4.c
accept.c
bind.c
connect.c
getpeername.c
getsockname.c
getsockopt.c
isfdtype.c
listen.c
Makefile
opensock.c
recv.c
recvfrom.c
recvmmsg.c
recvmsg.c
sa_len.c
send.c
sendmmsg.c
sendmsg.c
sendto.c
setsockopt.c
shutdown.c
sockaddr_un_set.c
sockatmark.c
socket.c
socketpair.c
tst-accept4.c
tst-cmsghdr-skeleton.c
tst-cmsghdr.c
tst-sockaddr_un_set.c
tst-sockopt-time64.c
tst-sockopt.c
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