diff options
| author | Florian Westphal <fw@strlen.de> | 2018-11-12 22:43:45 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-12-17 09:28:48 +0100 |
| commit | 38e22947994de227bc1ac57ec82314c24a605605 (patch) | |
| tree | 5cdaccac07774e5a085551e5005e89b05c1ab699 /drivers/hwmon | |
| parent | cae5446b33f65162fe21fdb633a63619633e7ea1 (diff) | |
netfilter: nf_tables: fix use-after-free when deleting compat expressions
[ Upstream commit 29e3880109e357fdc607b4393f8308cef6af9413 ]
nft_compat ops do not have static storage duration, unlike all other
expressions.
When nf_tables_expr_destroy() returns, expr->ops might have been
free'd already, so we need to store next address before calling
expression destructor.
For same reason, we can't deref match pointer after nft_xt_put().
This can be easily reproduced by adding msleep() before
nft_match_destroy() returns.
Fixes: 0ca743a55991 ("netfilter: nf_tables: add compatibility layer for x_tables")
Reported-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/hwmon')
0 files changed, 0 insertions, 0 deletions