From: Steffen Klassert steffen.klassert@secunet.com
stable inclusion from stable-5.10.51 commit 57f7ed25bd1672a51c2d9cd15c9714c0dfc56062 bugzilla: 175263 https://gitee.com/openeuler/kernel/issues/I4DT6F
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
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[ Upstream commit 6fd06963fa74197103cdbb4b494763127b3f2f34 ]
When memory allocation for XFRMA_ENCAP or XFRMA_COADDR fails, the error will not be reported because the -ENOMEM assignment to the err variable is overwritten before. Fix this by moving these two in front of the function so that memory allocation failures will be reported.
Reported-by: Tobias Brunner tobias@strongswan.org Signed-off-by: Steffen Klassert steffen.klassert@secunet.com Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com Signed-off-by: Chen Jun chenjun102@huawei.com --- net/xfrm/xfrm_user.c | 28 ++++++++++++++-------------- 1 file changed, 14 insertions(+), 14 deletions(-)
diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c index d0c32a8fcc4a..45f86a97eaf2 100644 --- a/net/xfrm/xfrm_user.c +++ b/net/xfrm/xfrm_user.c @@ -580,6 +580,20 @@ static struct xfrm_state *xfrm_state_construct(struct net *net,
copy_from_user_state(x, p);
+ if (attrs[XFRMA_ENCAP]) { + x->encap = kmemdup(nla_data(attrs[XFRMA_ENCAP]), + sizeof(*x->encap), GFP_KERNEL); + if (x->encap == NULL) + goto error; + } + + if (attrs[XFRMA_COADDR]) { + x->coaddr = kmemdup(nla_data(attrs[XFRMA_COADDR]), + sizeof(*x->coaddr), GFP_KERNEL); + if (x->coaddr == NULL) + goto error; + } + if (attrs[XFRMA_SA_EXTRA_FLAGS]) x->props.extra_flags = nla_get_u32(attrs[XFRMA_SA_EXTRA_FLAGS]);
@@ -600,23 +614,9 @@ static struct xfrm_state *xfrm_state_construct(struct net *net, attrs[XFRMA_ALG_COMP]))) goto error;
- if (attrs[XFRMA_ENCAP]) { - x->encap = kmemdup(nla_data(attrs[XFRMA_ENCAP]), - sizeof(*x->encap), GFP_KERNEL); - if (x->encap == NULL) - goto error; - } - if (attrs[XFRMA_TFCPAD]) x->tfcpad = nla_get_u32(attrs[XFRMA_TFCPAD]);
- if (attrs[XFRMA_COADDR]) { - x->coaddr = kmemdup(nla_data(attrs[XFRMA_COADDR]), - sizeof(*x->coaddr), GFP_KERNEL); - if (x->coaddr == NULL) - goto error; - } - xfrm_mark_get(attrs, &x->mark);
xfrm_smark_init(attrs, &x->props.smark);