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fix(dracut-install): file created without restricting permissions #2231

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fix(dracut-install): file created without restricting permissions #2231

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6 changes: 4 additions & 2 deletions src/install/dracut-install.c
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Original file line number Diff line number Diff line change
Expand Up @@ -682,9 +682,11 @@ void mark_hostonly(const char *path)

_asprintf(&fulldstpath, "%s/lib/dracut/hostonly-files", destrootdir);

f = fopen(fulldstpath, "a");
int fd = open(fulldstpath, O_RDONLY | O_APPEND, 0600);

Check failure

Code scanning / CodeQL

Uncontrolled data used in path expression

This argument to a file access function is derived from [user input (an environment variable)](1) and then passed to open(__path).
if (fd != -1)
f = fdopen(fd, "a");

if (f == NULL) {
if (fd == -1 || f == NULL) {
log_error("Could not open '%s' for writing.", fulldstpath);
return;
}
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