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authorArjun Shankar <arjun@redhat.com>2022-08-02 11:10:25 +0200
committerArjun Shankar <arjun@redhat.com>2022-08-02 11:10:25 +0200
commit9c443ac4559a47ed99859bd80d14dc4b6dd220a1 (patch)
treec7965d741b7efbbb8e86e5063f7a097b8b9bf8e2 /sysdeps/ia64/fpu/w_atanh_compat.c
parent521d54056242aae41ad362bd95ab17c50138337a (diff)
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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>
Diffstat (limited to 'sysdeps/ia64/fpu/w_atanh_compat.c')
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