This update for qemu fixes the following issues :

Fix OOB access in sm501 device emulation (CVE-2020-12829, bsc#1172385)

Fix OOB access possibility in MegaRAID SAS 8708EM2 emulation (CVE-2020-13362 bsc#1172383)

Fix use-after-free in usb xhci packet handling (CVE-2020-25723, bsc#1178934)

Fix use-after-free in usb ehci packet handling (CVE-2020-25084, bsc#1176673)

Fix OOB access in usb hcd-ohci emulation (CVE-2020-25624, bsc#1176682)

Fix infinite loop (DoS) in usb hcd-ohci emulation (CVE-2020-25625, bsc#1176684)

Fix guest triggerable assert in shared network handling code (CVE-2020-27617, bsc#1178174)

Fix infinite loop (DoS) in e1000e device emulation (CVE-2020-28916, bsc#1179468)

Fix OOB access in atapi emulation (CVE-2020-29443, bsc#1181108)

Fix NULL pointer deref. (DoS) in mmio ops (CVE-2020-15469, bsc#1173612)

Fix infinite loop (DoS) in e1000 device emulation (CVE-2021-20257, bsc#1182577)

Fix OOB access (stack overflow) in rtl8139 NIC emulation (CVE-2021-3416, bsc#1182968)

Fix OOB access (stack overflow) in other NIC emulations (CVE-2021-3416)

Fix OOB access in SLIRP ARP/NCSI packet processing (CVE-2020-29129, bsc#1179466, CVE-2020-29130, bsc#1179467)

Fix NULL pointer dereference possibility (DoS) in MegaRAID SAS 8708EM2 emulation (CVE-2020-13659 bsc#1172386

Fix OOB access in iscsi (CVE-2020-11947 bsc#1180523)

Fix OOB access in vmxnet3 emulation (CVE-2021-20203 bsc#1181639)

Fix buffer overflow in the XGMAC device (CVE-2020-15863 bsc#1174386)

Fix DoS in packet processing of various emulated NICs (CVE-2020-16092 bsc#1174641)

Fix OOB access while processing USB packets (CVE-2020-14364 bsc#1175441)

Fix package scripts to not use hard-coded paths for temporary working directories and log files (bsc#1182425)

Fix potential privilege escalation in virtfs (CVE-2021-20181 bsc#1182137)

Drop the 'ampersand 0x25 shift altgr' line in pt-br keymap file (bsc#1129962)

Fix migration failure with error message: 'error while loading state section id 3(ram) (bsc#1154790)

Fix OOB access possibility in ES1370 audio device emulation (CVE-2020-13361 bsc#1172384)

Fix OOB access in ROM loading (CVE-2020-13765 bsc#1172478)

Fix OOB access in ARM interrupt handling (CVE-2021-20221 bsc#1181933)

Tweaks to spec file for better formatting, and remove not needed BuildRequires for e2fsprogs-devel and libpcap-devel

Use '%service_del_postun_without_restart' instead of '%service_del_postun' to avoid 'Failed to try-restart qemu-ga@.service' error while updating the qemu-guest-agent.
(bsc#1178565)

Fix OOB access in sm501 device emulation (CVE-2020-12829, bsc#1172385)

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

The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2022-9172 advisory.

    - Bounds check for block exceeding page length (CVE-2021-3504)       resolves: rhbz#1950501

    libguestfs
    - 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}

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 14.04 LTS / 16.04 LTS / 18.04 LTS / 20.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-8412-1 advisory.

    Felipe Franciosi, Raphael Norwitz, and Peter Turschmid discovered that the iSCSI block driver in QEMU     incorrectly handled certain responses from an iSCSI server. A remote attacker could possibly use this     issue to cause QEMU to crash, resulting in a denial of service, or possibly execute arbitrary code. This     issue only affected Ubuntu 14.04 LTS. (CVE-2020-1711)

    It was discovered that the iSCSI block driver in QEMU incorrectly handled certain memory operations,     leading to a heap-based buffer over-read. An attacker could possibly use this issue to expose sensitive     information from the host. This issue only affected Ubuntu 14.04 LTS. (CVE-2020-11947)

    Ziming Zhang discovered that the SM501 display driver in QEMU contained an integer overflow. A local     attacker could possibly use this issue to cause QEMU to crash, resulting in a denial of service. This     issue only affected Ubuntu 14.04 LTS. (CVE-2020-12829)

    Gaoning Pan and Xingwei Li discovered that the USB xHCI controller implementation in QEMU contained an     infinite loop. An attacker inside the guest could possibly use this issue to cause QEMU to hang, resulting     in a denial of service. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, and Ubuntu 18.04 LTS.
    (CVE-2020-14394)

    Lei Sun discovered that QEMU incorrectly handled certain MemoryRegionOps objects, leading to a NULL     pointer dereference. An attacker inside the guest could possibly use this issue to cause QEMU to crash,     resulting in a denial of service. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS.
    (CVE-2020-15469)

    Alexander Bulekov discovered that the e1000e network device implementation in QEMU contained a use-after-     free. An attacker inside the guest could possibly use this issue to cause QEMU to crash, resulting in a     denial of service. This issue only affected Ubuntu 14.04 LTS. (CVE-2020-15859)

    Ziming Zhang discovered that the XGMAC Ethernet controller in QEMU contained a buffer overflow. An     attacker inside the guest could possibly use this issue to cause QEMU to crash, resulting in a denial of     service, or possibly execute arbitrary code. This issue only affected Ubuntu 14.04 LTS. (CVE-2020-15863)

    Alexander Bulekov discovered that the SDHCI device emulation in QEMU contained a heap-based buffer     overflow. An attacker inside the guest could possibly use this issue to cause QEMU to crash, resulting in     a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 14.04 LTS.
    (CVE-2020-17380)

    Sergej Schumilo, Cornelius Aschermann, and Simon Wrner discovered that the USB xHCI controller     implementation in QEMU did not check a return value, leading to a use-after-free. An attacker inside the     guest could possibly use this issue to cause QEMU to crash, resulting in a denial of service. This issue     only affected Ubuntu 14.04 LTS. (CVE-2020-25084)

    Gaoning Pan, Yongkang Jia, and Yi Ren discovered that the USB OHCI controller implementation in QEMU     contained a stack-based buffer over-read. An attacker inside the guest could possibly use this issue to     cause QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu 14.04 LTS.
    (CVE-2020-25624)

    It was discovered that the USB OHCI controller implementation in QEMU contained an infinite loop. An     attacker inside the guest could possibly use this issue to cause QEMU to consume resources, resulting in a     denial of service. This issue only affected Ubuntu 14.04 LTS. (CVE-2020-25625)

    Cheolwoo Myung discovered that the USB EHCI emulation in QEMU did not handle DMA memory map failures,     leading to a reachable assertion. An attacker inside the guest could possibly use this issue to cause QEMU     to crash, resulting in a denial of service. This issue only affected Ubuntu 14.04 LTS. (CVE-2020-25723)

    Gaoning Pan discovered that the network device emulation in QEMU could be made to trigger an assertion     failure when processing packets that lacked a valid layer 3 protocol. An attacker inside the guest could     possibly use this issue to cause QEMU to crash, resulting in a denial of service. This issue only affected     Ubuntu 14.04 LTS. (CVE-2020-27617)

    Wenxiang Qian discovered that the ATAPI emulation in QEMU did not properly validate a buffer index,     leading to an out-of-bounds read. An attacker inside the guest could possibly use this issue to expose     sensitive information or cause QEMU to crash, resulting in a denial of service. This issue only affected     Ubuntu 14.04 LTS. (CVE-2020-29443)

    Cheolwoo Myung discovered that the ESP SCSI emulation in QEMU contained a NULL pointer dereference. An     attacker inside the guest could possibly use this issue to cause QEMU to crash, resulting in a denial of     service. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2020-35504)

    Cheolwoo Myung discovered that the am53c974 SCSI host bus adapter emulation in QEMU contained a NULL     pointer dereference. An attacker inside the guest could possibly use this issue to cause QEMU to crash,     resulting in a denial of service. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS.
    (CVE-2020-35505)

    It was discovered that the SDHCI controller emulation in QEMU contained out-of-bounds read and write     issues. An attacker inside the guest could possibly use this issue to cause QEMU to crash, resulting in a     denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 14.04 LTS and     Ubuntu 16.04 LTS. (CVE-2021-3409)

    It was discovered that several network device emulations in QEMU contained an infinite loop when operating     in loopback mode. An attacker inside the guest could possibly use this issue to cause QEMU to crash,     resulting in a denial of service. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS.
    (CVE-2021-3416)

    Alexander Bulekov discovered that the floppy disk emulation in QEMU contained a heap-based buffer     overflow. An attacker inside the guest could possibly use this issue to expose sensitive information or     cause QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu 14.04 LTS and     Ubuntu 16.04 LTS. (CVE-2021-3507)

    Remy Noel discovered that the USB redirector device emulation in QEMU performed an unbounded stack     allocation when combining USB packets. An attacker inside the guest could possibly use this issue to cause     QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu 14.04 LTS and Ubuntu     16.04 LTS. (CVE-2021-3527)

    It was discovered that the QXL display device emulation in QEMU contained an integer overflow, leading to     a heap-based buffer overflow. An attacker inside the guest could possibly use this issue to cause QEMU to     crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected     Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2021-4206)

    It was discovered that the QXL display device emulation in QEMU performed a double fetch of guest-     controlled values, leading to a heap-based buffer overflow. An attacker inside the guest could possibly     use this issue to cause QEMU to crash, resulting in a denial of service, or possibly execute arbitrary     code. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2021-4207)

    It was discovered that the 9pfs server implementation in QEMU contained a race condition, leading to a     use-after-free. A malicious 9p client could possibly use this issue to escalate privileges. This issue     only affected Ubuntu 14.04 LTS. (CVE-2021-20181)

    Gaoning Pan discovered that the floppy disk emulation in QEMU contained a NULL pointer dereference. An     attacker inside the guest could possibly use this issue to cause QEMU to crash, resulting in a denial of     service. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2021-20196)

    Gaoning Pan discovered that the vmxnet3 network device emulation in QEMU contained an integer overflow. An     attacker inside the guest could possibly use this issue to cause QEMU to crash, resulting in a denial of     service. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2021-20203)

    It was discovered that the ARM Generic Interrupt Controller emulation in QEMU contained an out-of-bounds     heap access. An attacker inside the guest could possibly use this issue to cause QEMU to crash, resulting     in a denial of service. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2021-20221)

    Alexander Bulekov, Cheolwoo Myung, Sergej Schumilo, Cornelius Aschermann, and Simon Wrner discovered     that the e1000 network device emulation in QEMU contained an infinite loop. An attacker inside the guest     could possibly use this issue to cause QEMU to consume resources, resulting in a denial of service. This     issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2021-20257)

    It was discovered that the 9p passthrough file system implementation in QEMU did not prevent opening     special files on the host. A malicious guest could possibly use this issue to escape the exported 9p tree.
    This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, and Ubuntu 18.04 LTS. (CVE-2023-2861)

    It was discovered that the virtio crypto device emulation in QEMU did not properly validate certain buffer     lengths, leading to a heap buffer overflow. An attacker inside the guest could possibly use this issue to     cause QEMU to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only     affected Ubuntu 18.04 LTS. (CVE-2023-3180)

    It was discovered that the built-in VNC server in QEMU contained a NULL pointer dereference when cleaning     up a connection that failed during the handshake. A remote attacker could possibly use this issue to cause     QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu 18.04 LTS.
    (CVE-2023-3354)

    It was discovered that QEMU could incorrectly direct a guest I/O operation to disk offset 0 instead of the     intended offset. An attacker inside the guest could possibly use this issue to read or overwrite sensitive     data, potentially gaining control of the host. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04     LTS, and Ubuntu 18.04 LTS. (CVE-2023-5088)

    It was discovered that several virtio device emulations in QEMU did not properly guard against DMA     reentrancy, leading to a double free. An attacker inside the guest could possibly use this issue to cause     QEMU to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2024-3446)

    It was discovered that the SDHCI device emulation in QEMU contained a heap- based buffer overflow. An     attacker inside the guest could possibly use this issue to cause QEMU to crash, resulting in a denial of     service. (CVE-2024-3447)

    It was discovered that the QEMU disk image utility (qemu-img) did not properly handle certain crafted     image files. An attacker could possibly use this issue to cause qemu-img to consume excessive resources or     access an unintended external file, resulting in a denial of service. This issue only affected Ubuntu     20.04 LTS. (CVE-2024-4467)

    Cyrille Chatras discovered that the LSI53C895A SCSI Host Bus Adapter emulation in QEMU contained a use-     after-free. An attacker inside the guest could possibly use this issue to cause QEMU to crash, resulting     in a denial of service, or possibly execute arbitrary code. (CVE-2024-6519)

    It was discovered that the NBD server in QEMU contained an improper synchronization issue during socket     closure. A remote attacker could possibly use this issue to cause QEMU to crash, resulting in a denial of     service. (CVE-2024-7409)

    It was discovered that the USB emulation in QEMU contained a reachable assertion. An attacker inside the     guest could possibly use this issue to cause QEMU to crash, resulting in a denial of service.
    (CVE-2024-8354)

    It was discovered that QEMU incorrectly handled resources during the VNC WebSocket handshake, leading to a     use-after-free. A remote attacker could possibly use this issue to cause QEMU to crash, resulting in a     denial of service. This issue only affected Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. (CVE-2025-11234)

    It was discovered that QEMU could be made to read out of bounds when reading VMDK images. An attacker     could possibly use this issue to expose sensitive information or cause QEMU to crash, resulting in a     denial of service. (CVE-2026-2243)

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.

ID	Name	Product	Family	Published	Updated	Severity
148757	SUSE SLES15 Security Update : qemu (SUSE-SU-2021:1244-1)	Nessus	SuSE Local Security Checks	4/19/2021	1/3/2024	high
158359	Oracle Linux 8 : kvm_utils (ELSA-2022-9172)	Nessus	Oracle Linux Local Security Checks	2/25/2022	11/2/2024	high
320399	Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS / 20.04 LTS : QEMU vulnerabilities (USN-8412-1)	Nessus	Ubuntu Local Security Checks	6/11/2026	6/11/2026	high

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