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-rw-r--r--security/selinux/xfrm.c34
1 files changed, 14 insertions, 20 deletions
diff --git a/security/selinux/xfrm.c b/security/selinux/xfrm.c
index 8ab2951..d030818 100644
--- a/security/selinux/xfrm.c
+++ b/security/selinux/xfrm.c
@@ -316,6 +316,7 @@ int selinux_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx,
memcpy(new_ctx, old_ctx, sizeof(*new_ctx));
memcpy(new_ctx->ctx_str, old_ctx->ctx_str, new_ctx->ctx_len);
+ atomic_inc(&selinux_xfrm_refcount);
*new_ctxp = new_ctx;
}
return 0;
@@ -326,6 +327,7 @@ int selinux_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx,
*/
void selinux_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
{
+ atomic_dec(&selinux_xfrm_refcount);
kfree(ctx);
}
@@ -335,17 +337,13 @@ void selinux_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
int selinux_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
{
const struct task_security_struct *tsec = current_security();
- int rc = 0;
- if (ctx) {
- rc = avc_has_perm(tsec->sid, ctx->ctx_sid,
- SECCLASS_ASSOCIATION,
- ASSOCIATION__SETCONTEXT, NULL);
- if (rc == 0)
- atomic_dec(&selinux_xfrm_refcount);
- }
+ if (!ctx)
+ return 0;
- return rc;
+ return avc_has_perm(tsec->sid, ctx->ctx_sid,
+ SECCLASS_ASSOCIATION, ASSOCIATION__SETCONTEXT,
+ NULL);
}
/*
@@ -370,8 +368,8 @@ int selinux_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *uct
*/
void selinux_xfrm_state_free(struct xfrm_state *x)
{
- struct xfrm_sec_ctx *ctx = x->security;
- kfree(ctx);
+ atomic_dec(&selinux_xfrm_refcount);
+ kfree(x->security);
}
/*
@@ -381,17 +379,13 @@ int selinux_xfrm_state_delete(struct xfrm_state *x)
{
const struct task_security_struct *tsec = current_security();
struct xfrm_sec_ctx *ctx = x->security;
- int rc = 0;
- if (ctx) {
- rc = avc_has_perm(tsec->sid, ctx->ctx_sid,
- SECCLASS_ASSOCIATION,
- ASSOCIATION__SETCONTEXT, NULL);
- if (rc == 0)
- atomic_dec(&selinux_xfrm_refcount);
- }
+ if (!ctx)
+ return 0;
- return rc;
+ return avc_has_perm(tsec->sid, ctx->ctx_sid,
+ SECCLASS_ASSOCIATION, ASSOCIATION__SETCONTEXT,
+ NULL);
}
/*
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