diff options
author | Eric Dumazet | 2024-04-08 08:28:43 +0000 |
---|---|---|
committer | Jakub Kicinski | 2024-04-09 17:00:16 -0700 |
commit | 6309863b31dd80317cd7d6824820b44e254e2a9c (patch) | |
tree | 5f85d74ace141ee9e7685ed521ce8c6166b37c7f /tools/Makefile | |
parent | cf1b7201df59fb936f40f4a807433fe3f2ce310a (diff) |
net: add copy_safe_from_sockptr() helper
copy_from_sockptr() helper is unsafe, unless callers
did the prior check against user provided optlen.
Too many callers get this wrong, lets add a helper to
fix them and avoid future copy/paste bugs.
Instead of :
if (optlen < sizeof(opt)) {
err = -EINVAL;
break;
}
if (copy_from_sockptr(&opt, optval, sizeof(opt)) {
err = -EFAULT;
break;
}
Use :
err = copy_safe_from_sockptr(&opt, sizeof(opt),
optval, optlen);
if (err)
break;
Signed-off-by: Eric Dumazet <edumazet@google.com>
Link: https://lore.kernel.org/r/20240408082845.3957374-2-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'tools/Makefile')
0 files changed, 0 insertions, 0 deletions