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authorAntony Antony <antony.antony@secunet.com>2020-09-04 08:50:11 +0200
committerSteffen Klassert <steffen.klassert@secunet.com>2020-09-07 12:45:22 +0200
commit7aa05d304785204703a67a6aa7f1db402889a172 (patch)
tree1c5627f4a26152b3dd2aaecd3e0944828e01964f /net
parent91a46c6d1b4fcbfa4773df9421b8ad3e58088101 (diff)
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xfrm: clone XFRMA_SEC_CTX in xfrm_do_migrate
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>
Diffstat (limited to 'net')
-rw-r--r--net/xfrm/xfrm_state.c28
1 files changed, 28 insertions, 0 deletions
diff --git a/net/xfrm/xfrm_state.c b/net/xfrm/xfrm_state.c
index 3a000f289dcd..5e5ed8108498 100644
--- a/net/xfrm/xfrm_state.c
+++ b/net/xfrm/xfrm_state.c
@@ -1441,6 +1441,30 @@ 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)
{
@@ -1497,6 +1521,10 @@ 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);