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| author | Siddhesh Poyarekar <siddhesh@sourceware.org> | 2022-01-24 21:36:41 +0530 |
|---|---|---|
| committer | Siddhesh Poyarekar <siddhesh@sourceware.org> | 2022-01-24 21:40:00 +0530 |
| commit | 84d2d0fe20bdf94feed82b21b4d7d136db471f03 (patch) | |
| tree | ad576db6ecba25b33e7ed4a103eef90ef94d448a /stdlib | |
| parent | d8d94863ef125a392b929732b37e07dc927fbcd1 (diff) | |
| download | glibc-84d2d0fe20bdf94feed82b21b4d7d136db471f03.tar glibc-84d2d0fe20bdf94feed82b21b4d7d136db471f03.tar.gz glibc-84d2d0fe20bdf94feed82b21b4d7d136db471f03.tar.bz2 glibc-84d2d0fe20bdf94feed82b21b4d7d136db471f03.zip | |
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>
Diffstat (limited to 'stdlib')
| -rw-r--r-- | stdlib/canonicalize.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/stdlib/canonicalize.c b/stdlib/canonicalize.c index 732dc7ea46..6caed9e70e 100644 --- a/stdlib/canonicalize.c +++ b/stdlib/canonicalize.c @@ -404,7 +404,7 @@ error: { if (dest - rname <= get_path_max ()) rname = strcpy (resolved, rname); - else + else if (!failed) { failed = true; __set_errno (ENAMETOOLONG); |