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Prevent infinite recursion while following symlinks.

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Closes #2021.
This commit is contained in:
Victor M. Alvarez
2023-12-10 20:38:03 +01:00
parent cddec11934
commit 923368eab3
1 changed files with 4 additions and 3 deletions
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cli/yara.c
+4 -3
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@@ -688,14 +688,15 @@ static int scan_dir(const char* dir, SCAN_OPTIONS* scan_opts)
de = readdir(dp);
continue;
}
// If the directory entry is a symlink, check if it points to . and
// skip it in that case.
// If the directory entry is a symlink, check if it points to . or .. and
// skip it in those cases.
else if (S_ISLNK(st.st_mode))
{
char buf[2];
int len = readlink(full_path, buf, sizeof(buf));
if (len == 1 && buf[0] == '.')
if ((len == 1 && buf[0] == '.') ||
(len == 2 && buf[0] == '.' && buf[1] == '.'))
{
de = readdir(dp);
continue;