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| author | Reshetova, Elena <elena.reshetova@intel.com> | 2017-07-04 09:34:54 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-07-04 01:29:03 -0700 |
| commit | 0aeea21ada517b99a6e95298ffc105381bcd3a52 (patch) | |
| tree | 5a09b35a770e6893d3f146053463a64ddce6488b /net/ipv6/ipv6_sockglue.c | |
| parent | 25f4535a94c2b38d09912d7e8bab371c9e97be38 (diff) | |
| download | linux-0aeea21ada517b99a6e95298ffc105381bcd3a52.tar.gz linux-0aeea21ada517b99a6e95298ffc105381bcd3a52.tar.bz2 linux-0aeea21ada517b99a6e95298ffc105381bcd3a52.zip | |
net, ipv6: convert ipv6_txoptions.refcnt from atomic_t to refcount_t
refcount_t type and corresponding API should be
used instead of atomic_t when the variable is used as
a reference counter. This allows to avoid accidental
refcounter overflows that might lead to use-after-free
situations.
Signed-off-by: Elena Reshetova <elena.reshetova@intel.com>
Signed-off-by: Hans Liljestrand <ishkamiel@gmail.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: David Windsor <dwindsor@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/ipv6_sockglue.c')
| -rw-r--r-- | net/ipv6/ipv6_sockglue.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/ipv6/ipv6_sockglue.c b/net/ipv6/ipv6_sockglue.c index a531ba032b85..85404e7c3114 100644 --- a/net/ipv6/ipv6_sockglue.c +++ b/net/ipv6/ipv6_sockglue.c @@ -505,7 +505,7 @@ sticky_done: break; memset(opt, 0, sizeof(*opt)); - atomic_set(&opt->refcnt, 1); + refcount_set(&opt->refcnt, 1); opt->tot_len = sizeof(*opt) + optlen; retv = -EFAULT; if (copy_from_user(opt+1, optval, optlen)) |