2 Commits

Author	SHA1	Message	Date
Siddhesh Poyarekar	976db046bc	tst-realpath-toolong: Fix hurd build ... Define PATH_MAX to a constant if it isn't already defined, like in hurd. Signed-off-by: Siddhesh Poyarekar <siddhesh@sourceware.org>	2022-01-24 11:00:23 +05:30
Siddhesh Poyarekar	ee8d5e33ad	realpath: Set errno to ENAMETOOLONG for result larger than PATH_MAX [BZ #28770] ... realpath returns an allocated string when the result exceeds PATH_MAX, which is unexpected when its second argument is not NULL. This results in the second argument (resolved) being uninitialized and also results in a memory leak since the caller expects resolved to be the same as the returned value. Return NULL and set errno to ENAMETOOLONG if the result exceeds PATH_MAX. This fixes [BZ #28770], which is CVE-2021-3998. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org> Signed-off-by: Siddhesh Poyarekar <siddhesh@sourceware.org>	2022-01-21 23:01:30 +05:30