From: Hyunwoo Kim v4bel@theori.io
stable inclusion from stable-v5.10.230 commit 414476c4fb11be070c09ab8f3e75c9ee324a108a category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IB8G1F CVE: CVE-2024-53103
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
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commit e629295bd60abf4da1db85b82819ca6a4f6c1e79 upstream.
When hvs is released, there is a possibility that vsk->trans may not be initialized to NULL, which could lead to a dangling pointer. This issue is resolved by initializing vsk->trans to NULL.
Signed-off-by: Hyunwoo Kim v4bel@theori.io Reviewed-by: Stefano Garzarella sgarzare@redhat.com Acked-by: Michael S. Tsirkin mst@redhat.com Link: https://patch.msgid.link/Zys4hCj61V+mQfX2@v4bel-B760M-AORUS-ELITE-AX Signed-off-by: Jakub Kicinski kuba@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Zhang Changzhong zhangchangzhong@huawei.com --- net/vmw_vsock/hyperv_transport.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/net/vmw_vsock/hyperv_transport.c b/net/vmw_vsock/hyperv_transport.c index cc3bae2..b4871cc 100644 --- a/net/vmw_vsock/hyperv_transport.c +++ b/net/vmw_vsock/hyperv_transport.c @@ -538,6 +538,7 @@ static void hvs_destruct(struct vsock_sock *vsk) vmbus_hvsock_device_unregister(chan);
kfree(hvs); + vsk->trans = NULL; }
static int hvs_dgram_bind(struct vsock_sock *vsk, struct sockaddr_vm *addr)