From: Wang Yufen wangyufen@huawei.com

hulk inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I47SV5?from=project-issue CVE: NA

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In comp_read_size rxm->offset should be subtracted from skb->len. And use strp_done to release resoureces when destroy sock.

Signed-off-by: Wang Yufen wangyufen@huawei.com Reviewed-by: Wei Yongjun weiyongjun1@huawei.com Reviewed-by: Yue Haibing yuehaibing@huawei.com Signed-off-by: Yang Yingliang yangyingliang@huawei.com --- net/ipv4/tcp_comp.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/net/ipv4/tcp_comp.c b/net/ipv4/tcp_comp.c index f6ebe52f3f7f7..bd5274091225b 100644 --- a/net/ipv4/tcp_comp.c +++ b/net/ipv4/tcp_comp.c @@ -789,7 +789,7 @@ static int comp_read_size(struct strparser *strp, struct sk_buff *skb) if (rxm->offset > skb->len) return 0;

- return skb->len; + return skb->len - rxm->offset; }

void comp_setup_strp(struct sock *sk, struct tcp_comp_context *ctx) @@ -903,6 +903,7 @@ static void tcp_comp_context_free(struct rcu_head *head)

tcp_comp_context_tx_free(ctx); tcp_comp_context_rx_free(ctx); + strp_done(&ctx->rx.strp); kfree(ctx); }

@@ -923,6 +924,7 @@ void tcp_cleanup_compression(struct sock *sk) kfree_skb(ctx->rx.pkt); ctx->rx.pkt = NULL; } + strp_stop(&ctx->rx.strp);

rcu_assign_pointer(icsk->icsk_ulp_data, NULL); call_rcu(&ctx->rcu, tcp_comp_context_free);