Important: qemu security update (Oracle Linux 7)

[15:4.2.1-11.el7]
- pvrdma: Fix the ring init error flow (CVE-2021-3608) (Marcel Apfelbaum) [Orabug: 33120142] {CVE-2021-3608}
- pvrdma: Ensure correct input on ring init (CVE-2021-3607) (Marcel Apfelbaum) [Orabug: 33120146] {CVE-2021-3607}
- hw/rdma: Fix possible mremap overflow in the pvrdma device (CVE-2021-3582) (Marcel Apfelbaum) [Orabug: 33120084] {CVE-2021-3582}
- vhost-user-gpu: reorder free calls. (Gerd Hoffmann) [Orabug: 32950701] {CVE-2021-3544}
- vhost-user-gpu: abstract vg_cleanup_mapping_iov (Li Qiang) [Orabug: 32950716] {CVE-2021-3546}
- vhost-user-gpu: fix OOB write in 'virgl_cmd_get_capset' (CVE-2021-3546) (Li Qiang) [Orabug: 32950716] {CVE-2021-3546}
- vhost-user-gpu: fix memory leak in 'virgl_resource_attach_backing' (CVE-2021-3544) (Li Qiang) [Orabug: 32950701] {CVE-2021-3544}
- vhost-user-gpu: fix memory leak in 'virgl_cmd_resource_unref' (CVE-2021-3544) (Li Qiang) [Orabug: 32950701] {CVE-2021-3544}
- vhost-user-gpu: fix memory leak while calling 'vg_resource_unref' (CVE-2021-3544) (Li Qiang) [Orabug: 32950701] {CVE-2021-3544}
- vhost-user-gpu: fix memory leak in vg_resource_attach_backing (CVE-2021-3544) (Li Qiang) [Orabug: 32950701] {CVE-2021-3544}
- vhost-user-gpu: fix resource leak in 'vg_resource_create_2d' (CVE-2021-3544) (Li Qiang) [Orabug: 32950701] {CVE-2021-3544}
- vhost-user-gpu: fix memory disclosure in virgl_cmd_get_capset_info (CVE-2021-3545) (Li Qiang) [Orabug: 32950708] {CVE-2021-3545}
- usb: limit combined packets to 1 MiB (CVE-2021-3527) (Gerd Hoffmann) [Orabug: 32842778] {CVE-2021-3527}
- usb/redir: avoid dynamic stack allocation (CVE-2021-3527) (Gerd Hoffmann) [Orabug: 32842778] {CVE-2021-3527}
- mptsas: Remove unused MPTSASState 'pending' field (CVE-2021-3392) (Michael Tokarev) [Orabug: 32470463] {CVE-2021-3392}