glibc/sysdeps/unix
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
..
alpha Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
arm Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
bsd posix: Add terminal control setting support for posix_spawn 2022-01-25 14:07:53 -03:00
i386 Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
inet
mips Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
powerpc Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
sh Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
sysv/linux socket: Check lengths before advancing pointer in CMSG_NXTHDR 2022-08-02 11:10:25 +02:00
x86_64 Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
Implies
Makefile Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
confstr.h
get_child_max.c Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
getlogin.c Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
getlogin_r.c Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
getpagesize.c Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
grantpt.c Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
ifreq.c Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
make-syscalls.sh
setxid.h
sockatmark.c Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
syscall-template.S Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
syscall.S Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00
syscalls.list misc: Add time64 alias for ioctl 2021-07-21 11:58:09 +02:00
sysdep.h Update copyright dates with scripts/update-copyrights 2022-01-01 11:40:24 -08:00