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realpath: Avoid overwriting preexisting error (CVE-2021-3998)
authorSiddhesh Poyarekar <siddhesh@sourceware.org>
Mon, 24 Jan 2022 16:06:41 +0000 (21:36 +0530)
committerSiddhesh Poyarekar <siddhesh@sourceware.org>
Mon, 24 Jan 2022 16:10:00 +0000 (21:40 +0530)
commit84d2d0fe20bdf94feed82b21b4d7d136db471f03
treead576db6ecba25b33e7ed4a103eef90ef94d448atree | snapshot
parentd8d94863ef125a392b929732b37e07dc927fbcd1commit | diff
realpath: Avoid overwriting preexisting error (CVE-2021-3998)

Set errno and failure for paths that are too long only if no other error
occurred earlier.

Related: BZ #28770

Reviewed-by: Andreas Schwab <schwab@linux-m68k.org>
Signed-off-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
stdlib/canonicalize.c diff | blob | history
Domain: System / Toolchain;