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ucm: execute_sysw - fix possible use-after-free

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Signed-off-by: Jaroslav Kysela <perex@perex.cz>
This commit is contained in:
Jaroslav Kysela 2022-12-07 14:49:48 +01:00
parent d28e8cb294
commit e29413a220
1 changed files with 3 additions and 2 deletions
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5
src/ucm/main.c
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@ -572,16 +572,17 @@ static int execute_sysw(const char *sysw)
wlen = write(fd, value, len);
myerrno = errno;
close(fd);
free(s);
if (ignore_error)
return 0;
goto __end;
if (wlen != (ssize_t)len) {
uc_error("unable to write '%s' to '%s': %s", value, path, strerror(myerrno));
return -EINVAL;
}
__end:
free(s);
return 0;
}