Fix the direct assignment from u32 data input into the dlen attribute with a size of u8. Signed-off-by: Laura Garcia Liebana <nevola@xxxxxxxxx> --- net/netfilter/nft_immediate.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/net/netfilter/nft_immediate.c b/net/netfilter/nft_immediate.c index db3b746..6de590c 100644 --- a/net/netfilter/nft_immediate.c +++ b/net/netfilter/nft_immediate.c @@ -53,6 +53,9 @@ static int nft_immediate_init(const struct nft_ctx *ctx, tb[NFTA_IMMEDIATE_DATA]); if (err < 0) return err; + + if (desc.len > U8_MAX) + return -EINVAL; priv->dlen = desc.len; priv->dreg = nft_parse_register(tb[NFTA_IMMEDIATE_DREG]); -- 2.8.1 -- To unsubscribe from this list: send the line "unsubscribe netfilter-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
