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| author | Alexey Dobriyan <adobriyan@gmail.com> | 2016-12-13 22:30:15 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-12-13 14:54:44 -0500 |
| commit | 3e1ed981b7a903ba81199d4d25b80c6bba705160 (patch) | |
| tree | 1ea2510d8302182ef99c1fd48ca3bdcdd90c2c2d /include/net/netlink.h | |
| parent | a220871be66f99d8957c693cf22ec67ecbd9c23a (diff) | |
| download | linux-3e1ed981b7a903ba81199d4d25b80c6bba705160.tar.gz linux-3e1ed981b7a903ba81199d4d25b80c6bba705160.tar.bz2 linux-3e1ed981b7a903ba81199d4d25b80c6bba705160.zip | |
netlink: revert broken, broken "2-clause nla_ok()"
Commit 4f7df337fe79bba1e4c2d525525d63b5ba186bbd
"netlink: 2-clause nla_ok()" is BROKEN.
First clause tests if "->nla_len" could even be accessed at all,
it can not possibly be omitted.
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/netlink.h')
| -rw-r--r-- | include/net/netlink.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/include/net/netlink.h b/include/net/netlink.h index dd657a33f8c3..d3938f11ae52 100644 --- a/include/net/netlink.h +++ b/include/net/netlink.h @@ -698,7 +698,8 @@ static inline int nla_len(const struct nlattr *nla) */ static inline int nla_ok(const struct nlattr *nla, int remaining) { - return nla->nla_len >= sizeof(*nla) && + return remaining >= (int) sizeof(*nla) && + nla->nla_len >= sizeof(*nla) && nla->nla_len <= remaining; } |