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From 0c667188e0c6cda615a036b8a2b4125f2c404dde Mon Sep 17 00:00:00 2001
From: SaltyMilk <soufiane.elmelcaoui@gmail.com>
Date: Mon, 10 Jul 2023 21:43:28 +0200
Subject: [PATCH] fopen: optimize
Closes #11419
Upstream-Status: Backport [https://github.com/curl/curl/commit/0c667188e0c6cda615a036b8a2b4125f2c404dde]
CVE: CVE-2023-32001
Signed-off-by: Ashish Sharma <asharma@mvista.com>
lib/fopen.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/lib/fopen.c b/lib/fopen.c
index c9c9e3d6e73a2..b6e3cadddef65 100644
--- a/lib/fopen.c
+++ b/lib/fopen.c
@@ -56,13 +56,13 @@ CURLcode Curl_fopen(struct Curl_easy *data, const char *filename,
int fd = -1;
*tempname = NULL;
- if(stat(filename, &sb) == -1 || !S_ISREG(sb.st_mode)) {
- /* a non-regular file, fallback to direct fopen() */
- *fh = fopen(filename, FOPEN_WRITETEXT);
- if(*fh)
- return CURLE_OK;
+ *fh = fopen(filename, FOPEN_WRITETEXT);
+ if(!*fh)
goto fail;
- }
+ if(fstat(fileno(*fh), &sb) == -1 || !S_ISREG(sb.st_mode))
+ return CURLE_OK;
+ fclose(*fh);
+ *fh = NULL;
result = Curl_rand_hex(data, randsuffix, sizeof(randsuffix));
if(result)
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