A flaw was found in the QEMU built-in VNC server while processing ClientCutText messages. The qemu_clipboard_request() function can be reached before vnc_server_cut_text_caps() was called and had the chance to initialize the clipboard peer, leading to a NULL pointer dereference. This could allow a malicious authenticated VNC client to crash QEMU and trigger a denial of service.

The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2024-12605 advisory.

    - Fixes: CVE-2021-33285, CVE-2021-33286, CVE-2021-33287, CVE-2021-33289,       CVE-2021-35266, CVE-2021-35267, CVE-2021-35268, CVE-2021-35269,       CVE-2021-39251, CVE-2021-39252, CVE-2021-39253, CVE-2021-39254       resolves: rhbz#2004490
    - Fix for CVE-2019-9755       (heap-based buffer overflow leads to local root privilege escalation)       resolves: rhbz#1698503
    - Fix CVE-2022-0485: Fail nbdcopy if NBD read or write fails       resolves: rhbz#2045718
    - Contains fix for NBD Protocol Downgrade Attack (CVE-2019-14842).
    - Fix CVE-2021-3746 libtpms: out-of-bounds access via specially crafted TPM 2 command packets       Resolves: rhbz#1999307
    - Fix CVE-2021-3623: out-of-bounds access when trying to resume the state of the vTPM       Fixes: rhbz#1976816
    - rpc: ensure temporary GSource is removed from client event loop (Daniel P. Berrange) [Orabug: 36821476]     {CVE-2024-4418}
    - Fix off-by-one error in udevListInterfacesByStatus (Martin Kletzander) [Orabug: 36364471]     {CVE-2024-1441}
    - virpci: Resolve leak in virPCIVirtualFunctionList cleanup (Tim Shearer) [Orabug: 35395469]     {CVE-2023-2700}
    - qemu: remove use of qemuDomainObjBeginJobWithAgent() (Jonathon Jongsma)  [Orabug: 31990187]     {CVE-2019-20485}
    - qemu: agent: set ifname to NULL after freeing (Jan Tomko)  [Orabug: 31964426]  {CVE-2020-25637}
    - rpc: require write acl for guest agent in virDomainInterfaceAddresses  (Jan Tomko)  [Orabug: 31964426]     {CVE-2020-25637}
    - rpc: add support for filtering @acls by uint params  (Jan Tomko)  [Orabug: 31964426]  {CVE-2020-25637}
    - rpc: gendispatch: handle empty flags (Jan Tomko)  [Orabug: 31964426]  {CVE-2020-25637}
    - storage: Fix daemon crash on lookup storagepool by targetpath (Yi Li)  [Orabug: 31439483]     {CVE-2020-10703}
    - qemuDomainGetStatsIOThread: Don't leak array with 0 iothreads (Peter Krempa)  [Orabug: 31251756]     {CVE-2020-12430}
    - qemu: don't hold both jobs for suspend (Jonathon Jongsma)  [Orabug: 31073098]  {CVE-2019-20485}
    - Fix CVE-2021-3716 NBD_OPT_STRUCTURED_REPLY injection on STARTTLS       resolves: rhbz#1994915
    - Document CVEs (Mark Kanda) {CVE-2023-4135} {CVE-2023-40360} {CVE-2024-26328} {CVE-2023-42467}     {CVE-2024-26327} {CVE-2024-3567}
    - hw/sd/sdhci: Do not update TRNMOD when Command Inhibit (DAT) is set (Philippe Mathieu-Daude) [Orabug:
    36858718] {CVE-2024-3447}
    - hw/virtio/virtio-crypto: Protect from DMA re-entrancy bugs (Philippe Mathieu-Daude) [Orabug: 36878301]     {CVE-2024-3446}
    - hw/char/virtio-serial-bus: Protect from DMA re-entrancy bugs (Philippe Mathieu-Daude) [Orabug: 36878301]     {CVE-2024-3446}
    - hw/display/virtio-gpu: Protect from DMA re-entrancy bugs (Philippe Mathieu-Daude) [Orabug: 36878301]     {CVE-2024-3446}
    - hw/virtio: Introduce virtio_bh_new_guarded() helper (Philippe Mathieu-Daude) [Orabug: 36878301]     {CVE-2024-3446}
    - ui/clipboard: add asserts for update and request (Fiona Ebner) [Orabug: 36858698] {CVE-2023-6683}
    - ui/clipboard: mark type as not available when there is no data (Fiona Ebner) [Orabug: 36858698]     {CVE-2023-6683}
    - virtio-net: correctly copy vnet header when flushing TX (Jason Wang) [Orabug: 36858734] {CVE-2023-6693}
    - esp: restrict non-DMA transfer length to that of available data (Mark Cave-Ayland) [Orabug: 36858704]     {CVE-2024-24474}
    - tests/qtest: ahci-test: add test exposing reset issue with pending callback (Fiona Ebner) [Orabug:
    36858692] {CVE-2023-5088}
    - hw/ide: reset: cancel async DMA operation before resetting state (Fiona Ebner) [Orabug: 36858692]     {CVE-2023-5088}
    - net: Update MemReentrancyGuard for NIC (Akihiko Odaki) [Orabug: 36858836] {CVE-2023-3019}
    - net: Provide MemReentrancyGuard * to qemu_new_nic() (Akihiko Odaki) [Orabug: 36858836] {CVE-2023-3019}
    - lsi53c895a: disable reentrancy detection for MMIO region, too (Thomas Huth) [Orabug: 36858811]     {CVE-2021-3750}
    - memory: stricter checks prior to unsetting engaged_in_io (Alexander Bulekov) [Orabug: 36858811]     {CVE-2021-3750}
    - async: avoid use-after-free on re-entrancy guard (Alexander Bulekov) [Orabug: 36858811] {CVE-2021-3750}
    - apic: disable reentrancy detection for apic-msi (Alexander Bulekov) [Orabug: 36858811] {CVE-2021-3750}
    - raven: disable reentrancy detection for iomem (Alexander Bulekov) [Orabug: 36858811] {CVE-2021-3750}
    - bcm2835_property: disable reentrancy detection for iomem (Alexander Bulekov) [Orabug: 36858811]     {CVE-2021-3750}
    - lsi53c895a: disable reentrancy detection for script RAM (Alexander Bulekov) [Orabug: 36858811]     {CVE-2021-3750}
    - hw: replace most qemu_bh_new calls with qemu_bh_new_guarded (Alexander Bulekov) [Orabug: 36858811]     {CVE-2021-3750}
    - checkpatch: add qemu_bh_new/aio_bh_new checks (Alexander Bulekov) [Orabug: 36858811] {CVE-2021-3750}
    - async: Add an optional reentrancy guard to the BH API (Alexander Bulekov) [Orabug: 36858811]     {CVE-2021-3750}
    - memory: prevent dma-reentracy issues (Alexander Bulekov) [Orabug: 36858811] {CVE-2021-3750}
    - qga/win32: Use rundll for VSS installation (Konstantin Kostiuk) [Orabug: 36858681] {CVE-2023-0664}
    - qga/win32: Remove change action from MSI installer (Konstantin Kostiuk) [Orabug: 36858681]     {CVE-2023-0664}
    - hw/display/ati_2d: Fix buffer overflow in ati_2d_blt (CVE-2021-3638) (Philippe Mathieu-Daude) [Orabug:
    36858674] {CVE-2021-3638}
    - CVE-2023-4135 is not applicable to Oracle QEMU 6.1.1 (Karl Heubaum) [Orabug: 35752193] {CVE-2023-4135}
    - virtio-crypto: verify src&dst buffer length for sym request (zhenwei pi) [Orabug: 35752194]     {CVE-2023-3180}
    - ui/vnc-clipboard: fix infinite loop in inflate_buffer (CVE-2023-3255) (Mauro Matteo Cascella) [Orabug:
    35752186] {CVE-2023-3255}
    - io: remove io watch if TLS channel is closed during handshake (Daniel P. Berrange) [Orabug: 35752182]     {CVE-2023-3354}
    - 9pfs: prevent opening special files (CVE-2023-2861) (Christian Schoenebeck) [Orabug: 35752178]     {CVE-2023-2861}
    - hw/scsi/lsi53c895a: Fix reentrancy issues in the LSI controller (CVE-2023-0330) (Thomas Huth) [Orabug:
    35752171] {CVE-2023-0330}
    - vhost-vdpa: do not cleanup the vdpa/vhost-net structures if peer nic is present (Ani Sinha) [Orabug:
    35662843] {CVE-2023-3301}
    - CVE-2023-1544 is not applicable to Oracle QEMU 6.1.1 (Karl Heubaum) [Orabug: 35305727] {CVE-2023-1544}
    - hw/pvrdma: Protect against buggy or malicious guest driver (Yuval Shaia) [Orabug: 35064352]     {CVE-2022-1050}
    - hw/display/qxl: Avoid buffer overrun in qxl_phys2virt (CVE-2022-4144) (Philippe Mathieu-Daude) [Orabug:
    35060182] {CVE-2022-4144}
    - ui/vnc-clipboard: fix integer underflow in vnc_client_cut_text_ext (Mauro Matteo Cascella) [Orabug:
    35060115] {CVE-2022-3165}
    - hw/acpi/erst.c: Fix memory handling issues (Christian A. Ehrhardt) [Orabug: 34779541] {CVE-2022-4172}
    - display/qxl-render: fix race condition in qxl_cursor (CVE-2021-4207) (Mauro Matteo Cascella) [Orabug:
    34591445] {CVE-2021-4207}
    - ui/cursor: fix integer overflow in cursor_alloc (CVE-2021-4206) (Mauro Matteo Cascella) [Orabug:
    34591281] {CVE-2021-4206}
    - scsi/lsi53c895a: really fix use-after-free in lsi_do_msgout (CVE-2022-0216) (Mauro Matteo Cascella)     [Orabug: 34590706] {CVE-2022-0216}
    - scsi/lsi53c895a: fix use-after-free in lsi_do_msgout (CVE-2022-0216) (Mauro Matteo Cascella) [Orabug:
    34590706] {CVE-2022-0216}
    - tests/qtest: Add fuzz-lsi53c895a-test (Philippe Mathieu-Daude) [Orabug: 34590706] {CVE-2022-0216}
    - hw/scsi/lsi53c895a: Do not abort when DMA requested and no data queued (Philippe Mathieu-Daude) [Orabug:
    34590706] {CVE-2022-0216}
    - virtio-net: fix map leaking on error during receive (Jason Wang) [Orabug: 34538375] {CVE-2022-26353}
    - vhost-vsock: detach the virqueue element in case of error (Stefano Garzarella) [Orabug: 33941752]     {CVE-2022-26354}
    - block/mirror: fix NULL pointer dereference in mirror_wait_on_conflicts() (Stefano Garzarella) [Orabug:
    33916572] {CVE-2021-4145}
    - hw/nvme: fix CVE-2021-3929 (Klaus Jensen) [Orabug: 33866395] {CVE-2021-3929}
    - virtiofsd: Drop membership of all supplementary groups (CVE-2022-0358) (Vivek Goyal) [Orabug: 33816690]     {CVE-2022-0358}
    - acpi: validate hotplug selector on access (Michael S. Tsirkin) [Orabug: 33816625] {CVE-2021-4158}
    - Document CVE-2021-4158 and CVE-2021-3947 as fixed (Mark Kanda) [Orabug: 33719302] [Orabug: 33754145]     {CVE-2021-4158} {CVE-2021-3947}
    - hw/block/fdc: Kludge missing floppy drive to fix CVE-2021-20196 (Philippe Mathieu-Daude) [Orabug:
    32439466] {CVE-2021-20196}
    - hw/block/fdc: Extract blk_create_empty_drive() (Philippe Mathieu-Daude) [Orabug: 32439466]     {CVE-2021-20196}
    - net: vmxnet3: validate configuration values during activate (CVE-2021-20203) (Prasad J Pandit) [Orabug:
    32559476] {CVE-2021-20203}
    - lan9118: switch to use qemu_receive_packet() for loopback (Alexander Bulekov) [Orabug: 32560540]     {CVE-2021-3416}
    - pcnet: switch to use qemu_receive_packet() for loopback (Alexander Bulekov) [Orabug: 32560540]     {CVE-2021-3416}
    - rtl8139: switch to use qemu_receive_packet() for loopback (Alexander Bulekov) [Orabug: 32560540]     {CVE-2021-3416}
    - tx_pkt: switch to use qemu_receive_packet_iov() for loopback (Jason Wang) [Orabug: 32560540]     {CVE-2021-3416}
    - sungem: switch to use qemu_receive_packet() for loopback (Jason Wang) [Orabug: 32560540] {CVE-2021-3416}
    - dp8393x: switch to use qemu_receive_packet() for loopback packet (Jason Wang) [Orabug: 32560540]     {CVE-2021-3416}
    - e1000: switch to use qemu_receive_packet() for loopback (Jason Wang) [Orabug: 32560540] {CVE-2021-3416}
    - net: introduce qemu_receive_packet() (Jason Wang) [Orabug: 32560540] {CVE-2021-3416}
    - Update slirp to address various CVEs (Mark Kanda) [Orabug: 32208456] [Orabug: 33014409] [Orabug:
    33014414] [Orabug: 33014417] [Orabug: 33014420] {CVE-2020-29129} {CVE-2020-29130} {CVE-2021-3592}     {CVE-2021-3593} {CVE-2021-3594} {CVE-2021-3595}
    - uas: add stream number sanity checks (Gerd Hoffmann) [Orabug: 33280793] {CVE-2021-3713}
    - usbredir: fix free call (Gerd Hoffmann) [Orabug: 33198441] {CVE-2021-3682}
    - hw/scsi/scsi-disk: MODE_PAGE_ALLS not allowed in MODE SELECT commands (Mauro Matteo Cascella) [Orabug:
    33548490] {CVE-2021-3930}
    - e1000: fix tx re-entrancy problem (Jon Maloy) [Orabug: 32560552] {CVE-2021-20257}
    - pvrdma: Fix the ring init error flow (Marcel Apfelbaum) [Orabug: 33120142] {CVE-2021-3608}
    - pvrdma: Ensure correct input on ring init (Marcel Apfelbaum) [Orabug: 33120146] {CVE-2021-3607}
    - hw/rdma: Fix possible mremap overflow in the pvrdma device (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' (Li Qiang) [Orabug: 32950716] {CVE-2021-3546}
    - vhost-user-gpu: fix memory leak in 'virgl_resource_attach_backing' (Li Qiang) [Orabug: 32950701]     {CVE-2021-3544}
    - vhost-user-gpu: fix memory leak in 'virgl_cmd_resource_unref' (Li Qiang) [Orabug: 32950701]     {CVE-2021-3544}
    - vhost-user-gpu: fix memory leak while calling 'vg_resource_unref' (Li Qiang) [Orabug: 32950701]     {CVE-2021-3544}
    - vhost-user-gpu: fix memory leak in vg_resource_attach_backing (Li Qiang) [Orabug: 32950701]     {CVE-2021-3544}
    - vhost-user-gpu: fix resource leak in 'vg_resource_create_2d' (Li Qiang) [Orabug: 32950701]     {CVE-2021-3544}
    - vhost-user-gpu: fix memory disclosure in virgl_cmd_get_capset_info (Li Qiang) [Orabug: 32950708]     {CVE-2021-3545}
    - usb: limit combined packets to 1 MiB (Gerd Hoffmann) [Orabug: 32842778] {CVE-2021-3527}
    - usb/redir: avoid dynamic stack allocation (Gerd Hoffmann) [Orabug: 32842778] {CVE-2021-3527}
    - mptsas: Remove unused MPTSASState 'pending' field (Michael Tokarev) [Orabug: 32470463] {CVE-2021-3392}
    - e1000: fail early for evil descriptor (Jason Wang) [Orabug: 32560552] {CVE-2021-20257}
    - Document CVE-2020-27661 as fixed (Mark Kanda) [Orabug: 32960200] {CVE-2020-27661}
    - imx7-ccm: add digprog mmio write method (Prasad J Pandit) [Orabug: 31576552] {CVE-2020-15469}
    - tz-ppc: add dummy read/write methods (Prasad J Pandit) [Orabug: 31576552] {CVE-2020-15469}
    - spapr_pci: add spapr msi read method (Prasad J Pandit) [Orabug: 31576552] {CVE-2020-15469}
    - nvram: add nrf51_soc flash read method (Prasad J Pandit) [Orabug: 31576552] {CVE-2020-15469}
    - prep: add ppc-parity write method (Prasad J Pandit) [Orabug: 31576552] {CVE-2020-15469}
    - vfio: add quirk device write method (Prasad J Pandit) [Orabug: 31576552] {CVE-2020-15469}
    - pci-host: designware: add pcie-msi read method (Prasad J Pandit) [Orabug: 31576552] {CVE-2020-15469}
    - hw/pci-host: add pci-intack write method (Prasad J Pandit) [Orabug: 31576552] {CVE-2020-15469}
    - hw/intc/arm_gic: Fix interrupt ID in GICD_SGIR register (Philippe Mathieu-Daude) [Orabug: 32470471]     {CVE-2021-20221}
    - memory: clamp cached translation in case it points to an MMIO region (Paolo Bonzini) [Orabug: 32252673]     {CVE-2020-27821}
    - hw/sd/sdhci: Fix DMA Transfer Block Size field (Philippe Mathieu-Daude) [Orabug: 32613470]     {CVE-2021-3409}
    - 9pfs: Fully restart unreclaim loop (CVE-2021-20181) (Greg Kurz) [Orabug: 32441198] {CVE-2021-20181}
    - ide: atapi: check logical block address and read size (CVE-2020-29443) (Prasad J Pandit) [Orabug:
    32393835] {CVE-2020-29443}
    - Document CVE-2019-20808 as fixed (Mark Kanda) [Orabug: 32339196] {CVE-2019-20808}
    - block/iscsi:fix heap-buffer-overflow in iscsi_aio_ioctl_cb (Chen Qun) [Orabug: 32339207]     {CVE-2020-11947}
    - net: remove an assert call in eth_get_gso_type (Prasad J Pandit) [Orabug: 32102583] {CVE-2020-27617}
    - Document CVE-2020-25723 as fixed (Mark Kanda) [Orabug: 32222397] {CVE-2020-25723}
    - hw/net/e1000e: advance desc_offset in case of null descriptor (Prasad J Pandit) [Orabug: 32217517]     {CVE-2020-28916}
    - libslirp: Update version to include CVE fixes (Mark Kanda) [Orabug: 32208456] [Orabug: 32208462]     {CVE-2020-29129} {CVE-2020-29130}
    - Document CVE-2020-25624 as fixed (Mark Kanda) [Orabug: 32212527] {CVE-2020-25624}
    - ati: check x y display parameter values (Prasad J Pandit) [Orabug: 32108251] {CVE-2020-27616}
    - hw: usb: hcd-ohci: check for processed TD before retire (Prasad J Pandit) [Orabug: 31901690]     {CVE-2020-25625}
    - hw: usb: hcd-ohci: check len and frame_number variables (Prasad J Pandit) [Orabug: 31901690]     {CVE-2020-25625}
    - hw: ehci: check return value of 'usb_packet_map' (Li Qiang) [Orabug: 31901649] {CVE-2020-25084}
    - hw: xhci: check return value of 'usb_packet_map' (Li Qiang) [Orabug: 31901649] {CVE-2020-25084}
    - usb: fix setup_len init (CVE-2020-14364) (Gerd Hoffmann) [Orabug: 31848849] {CVE-2020-14364}
    - Document CVE-2020-12829 and CVE-2020-14415 as fixed (Mark Kanda) [Orabug: 31855502] [Orabug: 31855427]     {CVE-2020-12829} {CVE-2020-14415}
    - hw/net/xgmac: Fix buffer overflow in xgmac_enet_send() (Mauro Matteo Cascella) [Orabug: 31667649]     {CVE-2020-15863}
    - hw/net/net_tx_pkt: fix assertion failure in net_tx_pkt_add_raw_fragment() (Mauro Matteo Cascella)     [Orabug: 31737809] {CVE-2020-16092}
    - hw/sd/sdcard: Do not switch to ReceivingData if address is invalid (Philippe Mathieu-Daude)  [Orabug:
    31414336]  {CVE-2020-13253}
    - hw/sd/sdcard: Do not allow invalid SD card sizes (Philippe Mathieu-Daude)  [Orabug: 31414336]     {CVE-2020-13253}
    - libslirp: Update to v4.3.1 to fix CVE-2020-10756 (Karl Heubaum)  [Orabug: 31604999]  {CVE-2020-10756}
    - Document CVEs as fixed 2/2 (Karl Heubaum)  [Orabug: 30618035]  {CVE-2017-18043} {CVE-2018-10839}     {CVE-2018-11806} {CVE-2018-12617} {CVE-2018-15746} {CVE-2018-16847} {CVE-2018-16867} {CVE-2018-17958}     {CVE-2018-17962} {CVE-2018-17963} {CVE-2018-18849} {CVE-2018-19364} {CVE-2018-19489} {CVE-2018-3639}     {CVE-2018-5683} {CVE-2018-7550} {CVE-2018-7858} {CVE-2019-12068} {CVE-2019-15034} {CVE-2019-15890}     {CVE-2019-20382} {CVE-2020-10702} {CVE-2020-10761} {CVE-2020-11102} {CVE-2020-11869} {CVE-2020-13361}     {CVE-2020-13765} {CVE-2020-13800} {CVE-2020-1711} {CVE-2020-1983} {CVE-2020-8608}
    - Document CVEs as fixed 1/2 (Karl Heubaum)  [Orabug: 30618035]  {CVE-2017-10806} {CVE-2017-11334}     {CVE-2017-12809} {CVE-2017-13672} {CVE-2017-13673} {CVE-2017-13711} {CVE-2017-14167} {CVE-2017-15038}     {CVE-2017-15119} {CVE-2017-15124} {CVE-2017-15268} {CVE-2017-15289} {CVE-2017-16845} {CVE-2017-17381}     {CVE-2017-18030} {CVE-2017-2630} {CVE-2017-2633} {CVE-2017-5715} {CVE-2017-5753} {CVE-2017-5754}     {CVE-2017-5931} {CVE-2017-6058} {CVE-2017-7471} {CVE-2017-7493} {CVE-2017-8112} {CVE-2017-8309}     {CVE-2017-8379} {CVE-2017-8380} {CVE-2017-9503} {CVE-2017-9524} {CVE-2018-12126} {CVE-2018-12127}     {CVE-2018-12130} {CVE-2018-16872} {CVE-2018-20123} {CVE-2018-20124} {CVE-2018-20125} {CVE-2018-20126}     {CVE-2018-20191} {CVE-2018-20216} {CVE-2018-20815} {CVE-2019-11091} {CVE-2019-12155} {CVE-2019-14378}     {CVE-2019-3812} {CVE-2019-5008} {CVE-2019-6501} {CVE-2019-6778} {CVE-2019-8934} {CVE-2019-9824}
    - exec: set map length to zero when returning NULL (Prasad J Pandit)  [Orabug: 31439733]  {CVE-2020-13659}
    - megasas: use unsigned type for reply_queue_head and check index (Prasad J Pandit)  [Orabug: 31414338]     {CVE-2020-13362}
    - memory: Revert 'memory: accept mismatching sizes in memory_region_access_valid' (Michael S. Tsirkin)     [Orabug: 31439736] [Orabug: 31452202]  {CVE-2020-13754} {CVE-2020-13791}
    - Document CVE-2020-13765 as fixed (Karl Heubaum)  [Orabug: 31463250]  {CVE-2020-13765}
    - ati-vga: check mm_index before recursive call (CVE-2020-13800) (Prasad J Pandit)  [Orabug: 31452206]     {CVE-2020-13800}
    - es1370: check total frame count against current frame (Prasad J Pandit)  [Orabug: 31463235]     {CVE-2020-13361}
    - ati-vga: Fix checks in ati_2d_blt() to avoid crash (BALATON Zoltan)  [Orabug: 31238432]     {CVE-2020-11869}
    - libslirp: Update to stable-4.2 to fix CVE-2020-1983 (Karl Heubaum)  [Orabug: 31241227]  {CVE-2020-1983}
    - Document CVEs as fixed (Karl Heubaum)   {CVE-2019-12068} {CVE-2019-15034}
    - libslirp: Update to version 4.2.0 to fix CVEs (Karl Heubaum)  [Orabug: 30274592] [Orabug: 30869830]     {CVE-2019-15890} {CVE-2020-8608}
    - vnc: fix memory leak when vnc disconnect (Li Qiang)  [Orabug: 30996427]  {CVE-2019-20382}
    - iscsi: Cap block count from GET LBA STATUS (CVE-2020-1711) (Felipe Franciosi)  [Orabug: 31124035]     {CVE-2020-1711}
    - Update to 0.4.2, to address potential symlink vulnerabilities (CVE-2020-28407).
      Resolves: rhbz#1906043

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Ubuntu 22.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-6954-1 advisory.

    Markus Frank and Fiona Ebner discovered that QEMU did not properly handle certain memory operations,     leading to a NULL pointer dereference. An authenticated user could potentially use this issue to cause a     denial of service. (CVE-2023-6683)

    Xiao Lei discovered that QEMU did not properly handle certain memory

    operations when specific features were enabled, which could lead to a stack overflow. An attacker could     potentially use this issue to leak sensitive information. (CVE-2023-6693)

    It was discovered that QEMU had an integer underflow vulnerability in

    the TI command, which would result in a buffer overflow. An attacker could potentially use this issue to     cause a denial of service.

    (CVE-2024-24474)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2024-12407 advisory.

    - ui/clipboard: add asserts for update and request (Fiona Ebner) [Orabug: 36323175] {CVE-2023-6683}
    - ui/clipboard: mark type as not available when there is no data (Fiona Ebner) [Orabug: 36323175]     {CVE-2023-6683}
    - virtio-net: correctly copy vnet header when flushing TX (Jason Wang) [Orabug: 36154459] {CVE-2023-6693}
    - esp: restrict non-DMA transfer length to that of available data (Mark Cave-Ayland) [Orabug: 36322141]     {CVE-2024-24474}
    - net: Update MemReentrancyGuard for NIC (Akihiko Odaki) [Orabug: 35644197] {CVE-2023-3019}
    - net: Provide MemReentrancyGuard * to qemu_new_nic() (Akihiko Odaki) [Orabug: 35644197] {CVE-2023-3019}
    - lsi53c895a: disable reentrancy detection for MMIO region, too (Thomas Huth) [Orabug: 33774027]     {CVE-2021-3750}
    - memory: stricter checks prior to unsetting engaged_in_io (Alexander Bulekov) [Orabug: 33774027]     {CVE-2021-3750}
    - async: avoid use-after-free on re-entrancy guard (Alexander Bulekov) [Orabug: 33774027] {CVE-2021-3750}
    - apic: disable reentrancy detection for apic-msi (Alexander Bulekov) [Orabug: 33774027] {CVE-2021-3750}
    - raven: disable reentrancy detection for iomem (Alexander Bulekov) [Orabug: 33774027] {CVE-2021-3750}
    - bcm2835_property: disable reentrancy detection for iomem (Alexander Bulekov) [Orabug: 33774027]     {CVE-2021-3750}
    - lsi53c895a: disable reentrancy detection for script RAM (Alexander Bulekov) [Orabug: 33774027]     {CVE-2021-3750}
    - hw: replace most qemu_bh_new calls with qemu_bh_new_guarded (Alexander Bulekov) [Orabug: 33774027]     {CVE-2021-3750}
    - checkpatch: add qemu_bh_new/aio_bh_new checks (Alexander Bulekov) [Orabug: 33774027] {CVE-2021-3750}
    - async: Add an optional reentrancy guard to the BH API (Alexander Bulekov) [Orabug: 33774027]     {CVE-2021-3750}
    - memory: prevent dma-reentracy issues (Alexander Bulekov) [Orabug: 33774027] {CVE-2021-3750}
    - hw/scsi/scsi-disk: Disallow block sizes smaller than 512 [CVE-2023-42467] (Thomas Huth) [Orabug:
    35808564] {CVE-2023-42467}
    - tests/qtest: ahci-test: add test exposing reset issue with pending callback (Fiona Ebner) [Orabug:
    35977245] {CVE-2023-5088}
    - hw/ide: reset: cancel async DMA operation before resetting state (Fiona Ebner) [Orabug: 35977245]     {CVE-2023-5088}

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2024-2962 advisory.

    - Fix CVE-2022-2211 Denial of Service in --key parameter       resolves: rhbz#2101280
    - Fixes: CVE-2022-40284
    - Fixes: CVE-2021-46790, CVE-2022-30783, CVE-2022-30784, CVE-2022-30785,       CVE-2022-30786, CVE-2022-30787, CVE-2022-30788, CVE-2022-30789       resolves: rhbz#2127240 rhbz#2127248       (also: 2127233 2127234 2127241 2127249 2127255 2127256 2127262 2127263)
    - Fixes: CVE-2021-33285, CVE-2021-33286, CVE-2021-33287, CVE-2021-33289,       CVE-2021-35266, CVE-2021-35267, CVE-2021-35268, CVE-2021-35269,       CVE-2021-39251, CVE-2021-39252, CVE-2021-39253, CVE-2021-39254       resolves: rhbz#2004490
    - Fix for CVE-2019-9755       (heap-based buffer overflow leads to local root privilege escalation)       resolves: rhbz#1698503
    - Fix CVE-2022-0485: Fail nbdcopy if NBD read or write fails       resolves: rhbz#2045718
    - Contains fix for NBD Protocol Downgrade Attack (CVE-2019-14842).
    - Resolves: RHEL-19628       (CVE-2023-6683 virt:rhel/qemu-kvm: QEMU: VNC: NULL pointer dereference in qemu_clipboard_request()     [rhel-8])
    - Resolves: RHEL-19496       (CVE-2023-6693 virt:rhel/qemu-kvm: QEMU: virtio-net: stack buffer overflow in virtio_net_flush_tx()     [rhel-8])
    - Resolves: RHEL-15437       (CVE-2023-5088 virt:rhel/qemu-kvm: QEMU: improper IDE controller reset can lead to MBR overwrite     [rhel-8])
    - Resolves: RHEL-7309       (CVE-2023-3019 virt:rhel/qemu-kvm: QEMU: e1000e: heap use-after-free in e1000e_write_packet_to_guest()     [rhel-8])

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2024:2962 advisory.

    Kernel-based Virtual Machine (KVM) offers a full virtualization solution for Linux on numerous hardware     platforms. The virt:rhel module contains packages which provide user-space components used to run virtual     machines using KVM. The packages also provide APIs for managing and interacting with the virtualized     systems.

    Security Fix(es):

    * QEMU: VNC: infinite loop in inflate_buffer() leads to denial of service (CVE-2023-3255)

    * QEMU: improper IDE controller reset can lead to MBR overwrite (CVE-2023-5088)

    * QEMU: VNC: NULL pointer dereference in qemu_clipboard_request() (CVE-2023-6683)

    * QEMU: virtio-net: stack buffer overflow in virtio_net_flush_tx() (CVE-2023-6693)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

    Additional Changes:

    For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.10 Release Notes     linked from the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

According to the versions of the qemu package installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities :

  - A flaw was found in the QEMU built-in VNC server while processing ClientCutText messages. The     qemu_clipboard_request() function can be reached before vnc_server_cut_text_caps() was called and had the     chance to initialize the clipboard peer, leading to a NULL pointer dereference. This could allow a     malicious authenticated VNC client to crash QEMU and trigger a denial of service. (CVE-2023-6683)

  - A stack based buffer overflow was found in the virtio-net device of QEMU. This issue occurs when flushing     TX in the virtio_net_flush_tx function if guest features VIRTIO_NET_F_HASH_REPORT, VIRTIO_F_VERSION_1 and     VIRTIO_NET_F_MRG_RXBUF are enabled. This could allow a malicious user to overwrite local variables     allocated on the stack. Specifically, the `out_sg` variable could be used to read a part of process memory     and send it to the wire, causing an information leak. (CVE-2023-6693)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote Rocky Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2024:2135 advisory.

  - A DMA reentrancy issue leading to a use-after-free error was found in the e1000e NIC emulation code in     QEMU. This issue could allow a privileged guest user to crash the QEMU process on the host, resulting in a     denial of service. (CVE-2023-3019)

  - A flaw was found in the QEMU built-in VNC server while processing ClientCutText messages. A wrong exit     condition may lead to an infinite loop when inflating an attacker controlled zlib buffer in the     `inflate_buffer` function. This could allow a remote authenticated client who is able to send a clipboard     to the VNC server to trigger a denial of service. (CVE-2023-3255)

  - QEMU through 8.0.0 could trigger a division by zero in scsi_disk_reset in hw/scsi/scsi-disk.c because     scsi_disk_emulate_mode_select does not prevent s->qdev.blocksize from being 256. This stops QEMU and the     guest immediately. (CVE-2023-42467)

  - A bug in QEMU could cause a guest I/O operation otherwise addressed to an arbitrary disk offset to be     targeted to offset 0 instead (potentially overwriting the VM's boot code). This could be used, for     example, by L2 guests with a virtual disk (vdiskL2) stored on a virtual disk of an L1 (vdiskL1) hypervisor     to read and/or write data to LBA 0 of vdiskL1, potentially gaining control of L1 at its next reboot.
    (CVE-2023-5088)

  - A flaw was found in the QEMU built-in VNC server while processing ClientCutText messages. The     qemu_clipboard_request() function can be reached before vnc_server_cut_text_caps() was called and had the     chance to initialize the clipboard peer, leading to a NULL pointer dereference. This could allow a     malicious authenticated VNC client to crash QEMU and trigger a denial of service. (CVE-2023-6683)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2024-2135 advisory.

    - Resolves: RHEL-19629       (CVE-2023-6683 qemu-kvm: QEMU: VNC: NULL pointer dereference in qemu_clipboard_request() [rhel-9])
    - Resolves: RHEL-2828       (CVE-2023-42467 qemu-kvm: qemu: denial of service due to division by zero [rhel-9])
    - Resolves: RHEL-516       (CVE-2023-2680 qemu-kvm: QEMU: hcd-ehci: DMA reentrancy issue (incomplete fix for CVE-2021-3750)     [rhel-9])
    - Resolves: bz#2149108       (CVE-2022-4172 qemu-kvm: QEMU: ACPI ERST: memory corruption issues in read_erst_record and     write_erst_record [rhel-9])
    - Resolves: bz#1951522       (CVE-2021-3507 qemu-kvm: QEMU: fdc: heap buffer overflow in DMA read data transfers [rhel-9.0])

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2024:2135 advisory.

    Kernel-based Virtual Machine (KVM) is a full virtualization solution for Linux on a variety of     architectures. The qemu-kvm packages provide the user-space component for running virtual machines that     use KVM.

    Security Fix(es):

    * QEMU: e1000e: heap use-after-free in e1000e_write_packet_to_guest() (CVE-2023-3019)

    * QEMU: VNC: infinite loop in inflate_buffer() leads to denial of service (CVE-2023-3255)

    * QEMU: improper IDE controller reset can lead to MBR overwrite (CVE-2023-5088)

    * QEMU: VNC: NULL pointer dereference in qemu_clipboard_request() (CVE-2023-6683)

    * QEMU: am53c974: denial of service due to division by zero (CVE-2023-42467)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

    Additional Changes:

    For detailed information on changes in this release, see the Red Hat Enterprise Linux 9.4 Release Notes     linked from the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 / openSUSE 15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2024:1438-1 advisory.

  - A DMA reentrancy issue leading to a use-after-free error was found in the e1000e NIC emulation code in     QEMU. This issue could allow a privileged guest user to crash the QEMU process on the host, resulting in a     denial of service. (CVE-2023-3019)

  - A flaw was found in the QEMU built-in VNC server while processing ClientCutText messages. The     qemu_clipboard_request() function can be reached before vnc_server_cut_text_caps() was called and had the     chance to initialize the clipboard peer, leading to a NULL pointer dereference. This could allow a     malicious authenticated VNC client to crash QEMU and trigger a denial of service. (CVE-2023-6683)

  - A double free vulnerability was found in QEMU virtio devices (virtio-gpu, virtio-serial-bus, virtio-     crypto), where the mem_reentrancy_guard flag insufficiently protects against DMA reentrancy issues. This     issue could allow a malicious privileged guest user to crash the QEMU process on the host, resulting in a     denial of service or allow arbitrary code execution within the context of the QEMU process on the host.
    (CVE-2024-3446)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2024:1394-1 advisory.

  - A DMA reentrancy issue leading to a use-after-free error was found in the e1000e NIC emulation code in     QEMU. This issue could allow a privileged guest user to crash the QEMU process on the host, resulting in a     denial of service. (CVE-2023-3019)

  - A flaw was found in the QEMU built-in VNC server while processing ClientCutText messages. The     qemu_clipboard_request() function can be reached before vnc_server_cut_text_caps() was called and had the     chance to initialize the clipboard peer, leading to a NULL pointer dereference. This could allow a     malicious authenticated VNC client to crash QEMU and trigger a denial of service. (CVE-2023-6683)

  - QEMU before 8.2.0 has an integer underflow, and resultant buffer overflow, via a TI command when an     expected non-DMA transfer length is less than the length of the available FIFO data. This occurs in     esp_do_nodma in hw/scsi/esp.c because of an underflow of async_len. (CVE-2024-24474)

  - A double free vulnerability was found in QEMU virtio devices (virtio-gpu, virtio-serial-bus, virtio-     crypto), where the mem_reentrancy_guard flag insufficiently protects against DMA reentrancy issues. This     issue could allow a malicious privileged guest user to crash the QEMU process on the host, resulting in a     denial of service or allow arbitrary code execution within the context of the QEMU process on the host.
    (CVE-2024-3446)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2024-12276 advisory.

    - Fixes: CVE-2022-40284
    - Fix off-by-one error in udevListInterfacesByStatus (Martin Kletzander) [Orabug: 36364464]     {CVE-2024-1441}

    libvirt-dbus     libvirt-python
    - ui/clipboard: add asserts for update and request (Fiona Ebner) [Orabug: 36323175] {CVE-2023-6683}
    - ui/clipboard: mark type as not available when there is no data (Fiona Ebner) [Orabug: 36323175]     {CVE-2023-6683}
    - virtio-net: correctly copy vnet header when flushing TX (Jason Wang) [Orabug: 36154459] {CVE-2023-6693}
    - esp: restrict non-DMA transfer length to that of available data (Mark Cave-Ayland) [Orabug: 36322141]     {CVE-2024-24474}
    - net: Update MemReentrancyGuard for NIC (Akihiko Odaki) [Orabug: 35644197] {CVE-2023-3019}
    - net: Provide MemReentrancyGuard * to qemu_new_nic() (Akihiko Odaki) [Orabug: 35644197] {CVE-2023-3019}
    - lsi53c895a: disable reentrancy detection for MMIO region, too (Thomas Huth) [Orabug: 33774027]     {CVE-2021-3750}
    - memory: stricter checks prior to unsetting engaged_in_io (Alexander Bulekov) [Orabug: 33774027]     {CVE-2021-3750}
    - async: avoid use-after-free on re-entrancy guard (Alexander Bulekov) [Orabug: 33774027] {CVE-2021-3750}
    - apic: disable reentrancy detection for apic-msi (Alexander Bulekov) [Orabug: 33774027] {CVE-2021-3750}
    - raven: disable reentrancy detection for iomem (Alexander Bulekov) [Orabug: 33774027] {CVE-2021-3750}
    - bcm2835_property: disable reentrancy detection for iomem (Alexander Bulekov) [Orabug: 33774027]     {CVE-2021-3750}
    - lsi53c895a: disable reentrancy detection for script RAM (Alexander Bulekov) [Orabug: 33774027]     {CVE-2021-3750}
    - hw: replace most qemu_bh_new calls with qemu_bh_new_guarded (Alexander Bulekov) [Orabug: 33774027]     {CVE-2021-3750}
    - checkpatch: add qemu_bh_new/aio_bh_new checks (Alexander Bulekov) [Orabug: 33774027] {CVE-2021-3750}
    - async: Add an optional reentrancy guard to the BH API (Alexander Bulekov) [Orabug: 33774027]     {CVE-2021-3750}
    - memory: prevent dma-reentracy issues (Alexander Bulekov) [Orabug: 33774027] {CVE-2021-3750}
    - hw/scsi/scsi-disk: Disallow block sizes smaller than 512 [CVE-2023-42467] (Thomas Huth) [Orabug:
    35808564] {CVE-2023-42467}
    - tests/qtest: ahci-test: add test exposing reset issue with pending callback (Fiona Ebner) [Orabug:
    35977245] {CVE-2023-5088}

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
206427	Oracle Linux 8 : virt:kvm_utils2 (ELSA-2024-12605)	Nessus	Oracle Linux Local Security Checks	high
205391	Ubuntu 22.04 LTS : QEMU vulnerabilities (USN-6954-1)	Nessus	Ubuntu Local Security Checks	medium
200094	Oracle Linux 9 : qemu-kvm (ELSA-2024-12407)	Nessus	Oracle Linux Local Security Checks	high
198009	Oracle Linux 8 : virt:ol / and / virt-devel:rhel (ELSA-2024-2962)	Nessus	Oracle Linux Local Security Checks	high
197771	RHEL 8 : virt:rhel and virt-devel:rhel (RHSA-2024:2962)	Nessus	Red Hat Local Security Checks	high
197145	EulerOS Virtualization 2.11.1 : qemu (EulerOS-SA-2024-1624)	Nessus	Huawei Local Security Checks	medium
197136	EulerOS Virtualization 2.11.0 : qemu (EulerOS-SA-2024-1643)	Nessus	Huawei Local Security Checks	medium
196971	Rocky Linux 9 : qemu-kvm (RLSA-2024:2135)	Nessus	Rocky Linux Local Security Checks	high
195037	Oracle Linux 9 : qemu-kvm (ELSA-2024-2135)	Nessus	Oracle Linux Local Security Checks	high
194756	RHEL 9 : qemu-kvm (RHSA-2024:2135)	Nessus	Red Hat Local Security Checks	high
194463	SUSE SLED15 / SLES15 / openSUSE 15 Security Update : qemu (SUSE-SU-2024:1438-1)	Nessus	SuSE Local Security Checks	medium
193796	SUSE SLES15 Security Update : qemu (SUSE-SU-2024:1394-1)	Nessus	SuSE Local Security Checks	medium
193168	Oracle Linux 8 : virt:kvm_utils3 (ELSA-2024-12276)	Nessus	Oracle Linux Local Security Checks	high

Detections

Analytics

CVE-2023-6683

medium

Tenable Plugins

high

medium

high

high

high

medium

medium

high

high

high

medium

medium

high