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From 3578231d0a44c4a7617c046d3ef8b3cb1299c05e Mon Sep 17 00:00:00 2001
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From: Phil Sutter <phil@nwl.cc>
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Date: Fri, 12 Oct 2018 12:54:09 +0200
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Subject: [PATCH] Fix memleak in netlink_parse_fwd() error path
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Make sure allocated 'stmt' is freed before returning to caller.
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Fixes: 30d45266bf38b ("expr: extend fwd statement to support address and family")
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Signed-off-by: Phil Sutter <phil@nwl.cc>
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Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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(cherry picked from commit 30541cb66e2de38eea04ab28cb14f298cce9d99f)
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Signed-off-by: Phil Sutter <psutter@redhat.com>
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---
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src/netlink_delinearize.c | 13 ++++++++-----
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1 file changed, 8 insertions(+), 5 deletions(-)
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diff --git a/src/netlink_delinearize.c b/src/netlink_delinearize.c
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index 31d62420d41c8..ae84512c56f3a 100644
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--- a/src/netlink_delinearize.c
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+++ b/src/netlink_delinearize.c
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@@ -1152,9 +1152,11 @@ static void netlink_parse_fwd(struct netlink_parse_ctx *ctx,
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reg2 = netlink_parse_register(nle, NFTNL_EXPR_FWD_SREG_ADDR);
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if (reg2) {
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addr = netlink_get_register(ctx, loc, reg2);
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- if (addr == NULL)
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- return netlink_error(ctx, loc,
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- "fwd statement has no output expression");
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+ if (addr == NULL) {
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+ netlink_error(ctx, loc,
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+ "fwd statement has no output expression");
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+ goto out_err;
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+ }
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switch (stmt->fwd.family) {
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case AF_INET:
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@@ -1166,8 +1168,9 @@ static void netlink_parse_fwd(struct netlink_parse_ctx *ctx,
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BYTEORDER_BIG_ENDIAN);
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break;
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default:
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- return netlink_error(ctx, loc,
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- "fwd statement has no family");
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+ netlink_error(ctx, loc,
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+ "fwd statement has no family");
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+ goto out_err;
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}
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stmt->fwd.addr = addr;
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}
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--
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2.19.0
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