From: Antony Antony antony.antony@secunet.com
[ Upstream commit 7aa05d304785204703a67a6aa7f1db402889a172 ]
XFRMA_SEC_CTX was not cloned from the old to the new. Migrate this attribute during XFRMA_MSG_MIGRATE
v1->v2: - return -ENOMEM on error v2->v3: - fix return type to int
Fixes: 80c9abaabf42 ("[XFRM]: Extension for dynamic update of endpoint address(es)") Signed-off-by: Antony Antony antony.antony@secunet.com Signed-off-by: Steffen Klassert steffen.klassert@secunet.com Signed-off-by: Sasha Levin sashal@kernel.org --- net/xfrm/xfrm_state.c | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+)
diff --git a/net/xfrm/xfrm_state.c b/net/xfrm/xfrm_state.c index 10d30f0338d72..fc1b391ba1554 100644 --- a/net/xfrm/xfrm_state.c +++ b/net/xfrm/xfrm_state.c @@ -1438,6 +1438,30 @@ out: EXPORT_SYMBOL(xfrm_state_add);
#ifdef CONFIG_XFRM_MIGRATE +static inline int clone_security(struct xfrm_state *x, struct xfrm_sec_ctx *security) +{ + struct xfrm_user_sec_ctx *uctx; + int size = sizeof(*uctx) + security->ctx_len; + int err; + + uctx = kmalloc(size, GFP_KERNEL); + if (!uctx) + return -ENOMEM; + + uctx->exttype = XFRMA_SEC_CTX; + uctx->len = size; + uctx->ctx_doi = security->ctx_doi; + uctx->ctx_alg = security->ctx_alg; + uctx->ctx_len = security->ctx_len; + memcpy(uctx + 1, security->ctx_str, security->ctx_len); + err = security_xfrm_state_alloc(x, uctx); + kfree(uctx); + if (err) + return err; + + return 0; +} + static struct xfrm_state *xfrm_state_clone(struct xfrm_state *orig, struct xfrm_encap_tmpl *encap) { @@ -1494,6 +1518,10 @@ static struct xfrm_state *xfrm_state_clone(struct xfrm_state *orig, goto error; }
+ if (orig->security) + if (clone_security(x, orig->security)) + goto error; + if (orig->coaddr) { x->coaddr = kmemdup(orig->coaddr, sizeof(*x->coaddr), GFP_KERNEL);