A use-after-free vulnerability was found in the QEMU LSI53C895A SCSI Host Bus Adapter emulation. This issue can lead to a crash or VM escape.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - A use-after-free vulnerability was found in the QEMU LSI53C895A SCSI Host Bus Adapter emulation. This
    issue can lead to a crash or VM escape. (CVE-2024-6519)

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

    A flaw was found in QEMU's virtio-blk device. The issue arises because the device does not properly     validate the size of input descriptors before writing data. A malicious guest with high privileges could     exploit this vulnerability by submitting a malformed virtio-blk SCSI request, leading to an out-of-bounds     write in the host heap memory and a potential denial of service (DoS) for the QEMU     process.(CVE-2026-48914)

    NA(CVE-2026-3886)

    A flaw was found in the virtio-crypto device of QEMU. A malicious guest operating system can exploit a     missing length limit in the AKCIPHER path, leading to uncontrolled memory allocation. This can result in a     denial of service (DoS) on the host system by causing the QEMU process to terminate     unexpectedly.(CVE-2025-14876)

    An off-by-one error was found in QEMU's KVM Xen guest support. A malicious guest could use this flaw to     trigger out-of-bounds heap accesses in the QEMU process via the emulated Xen physdev hypercall interface,     leading to a denial of service or potential memory corruption.(CVE-2026-0665)

    A stack-based buffer overflow was found in the QEMU e1000 network device. The code for padding short     frames was dropped from individual network devices and moved to the net core code. The issue stems from     the device's receive code still being able to process a short frame in loopback mode. This could lead to a     buffer overrun in the e1000_receive_iov() function via the loopback code path. A malicious guest user     could use this vulnerability to crash the QEMU process on the host, resulting in a denial of     service.(CVE-2025-12464)

    A flaw was found in QEMU. If the QIOChannelWebsock object is freed while it is waiting to complete a     handshake, a GSource is leaked. This can lead to the callback firing later on and triggering a use-after-     free in the use of the channel. This can be abused by a malicious client with network access to the VNC     WebSocket port to cause a denial of service during the WebSocket handshake prior to the VNC client     authentication.(CVE-2025-11234)

    A flaw was found in QEMU. A specially crafted VMDK image could trigger an out-of-bounds read     vulnerability, potentially leading to a 12-byte leak of sensitive information or a denial of service     condition (DoS).(CVE-2026-2243)

    A flaw was found in the QEMU Virtio PCI Bindings (hw/virtio/virtio-pci.c). An improper release and use of     the irqfd for vector 0 during the boot process leads to a guest triggerable crash via vhost_net_stop().
    This flaw allows a malicious guest to crash the QEMU process on the host.(CVE-2024-4693)

    A use-after-free vulnerability was found in the QEMU LSI53C895A SCSI Host Bus Adapter emulation. This     issue can lead to a crash or VM escape.(CVE-2024-6519)

    A vulnerability was found in QEMU (Virtualization Software) (the affected version unknown). It has been     declared as critical.The CWE definition for the vulnerability is CWE-787. The product writes data past the     end, or before the beginning, of the intended buffer.As an impact it is known to affect confidentiality,     integrity, and availability.Applying the patch 4f28b87fdd24df2049626106b7c24d0180952115 is able to     eliminate this problem. The bugfix is ready for download at gitlab.com.(CVE-2026-3842)

    A flaw was found in QEMU. An assertion failure was present in the usb_ep_get() function in hw/net/core.c     when trying to get the USB endpoint from a USB device. This flaw may allow a malicious unprivileged guest     user to crash the QEMU process on the host and cause a denial of service condition.(CVE-2024-8354)

    An integer overflow vulnerability was found in the virtio-snd device via PCM_INFO requests from the guest.
    A malicious guest can provide out-of-bounds stream counts, potentially leading to unbounded memory     allocation on the host and a denial of service condition.(CVE-2026-3196)

    A flaw was found in QEMU. When reading input audio in the virtio-snd device input callback, the     `virtio_snd_pcm_in_cb` function did not check whether the iov could fit the data buffer, potentially     leading to a heap out-of-bounds write. This issue exists due to an incomplete fix for     CVE-2024-7730.(CVE-2026-3195)

Tenable has extracted the preceding description block directly from the EulerOS qemu 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-2026-500220 advisory.

    - tests/9p: add 3 xattr FID limit test cases (local fs driver) (Christian Schoenebeck) [Orabug: 39636027]     {CVE-2026-8348}
    - tests/9p: add 3 xattr FID limit test cases (synth fs driver) (Christian Schoenebeck) [Orabug: 39636027]     {CVE-2026-8348}
    - tests/9p: add virtio_9p_add_synth_driver_args() test client function (Christian Schoenebeck) [Orabug:
    39636027] {CVE-2026-8348}
    - tests/9p: increase P9_MAX_SIZE for test client (Christian Schoenebeck) [Orabug: 39636027]     {CVE-2026-8348}
    - hw/9pfs: add xattr count query interface to fs synth driver (Christian Schoenebeck) [Orabug: 39636027]     {CVE-2026-8348}
    - hw/9pfs: enable xattr (mockup) support for synth fs driver (Christian Schoenebeck) [Orabug: 39636027]     {CVE-2026-8348}
    - tests/9p: add Txattrcreate / Rxattrcreate test client functions (Christian Schoenebeck) [Orabug:
    39636027] {CVE-2026-8348}
    - tests/9p: add Tclunk / Rclunk test client functions (Christian Schoenebeck) [Orabug: 39636027]     {CVE-2026-8348}
    - tests/9p: add Tread / Rread test client functions (Christian Schoenebeck) [Orabug: 39636027]     {CVE-2026-8348}
    - qemu-options: document 9pfs max_xattr option (Christian Schoenebeck) [Orabug: 39636027] {CVE-2026-8348}
    - hw/9pfs: add max_xattr option (Christian Schoenebeck) [Orabug: 39636027] {CVE-2026-8348}
    - hw/9pfs: add xattr FID limit to prevent memory exhaustion (Christian Schoenebeck) [Orabug: 39636027]     {CVE-2026-8348}
    - hw/9pfs: cap Treaddir allocation (CVE-2026-9238) (Christian Schoenebeck) [Orabug: 39601986]     {CVE-2026-9238}
    - 9pfs/xen: implement response_buffer_size callback (Christian Schoenebeck) [Orabug: 39601986]     {CVE-2026-9238}
    - 9pfs/virtio: implement response_buffer_size callback (Christian Schoenebeck) [Orabug: 39601986]     {CVE-2026-9238}
    - hw/9pfs: add response_buffer_size transport callback (Christian Schoenebeck) [Orabug: 39601986]     {CVE-2026-9238}
    - hw/9pfs: cap negotiated msize to transport limit (Christian Schoenebeck) [Orabug: 39601986]     {CVE-2026-9238}
    - 9pfs/xen: implement msize_limit callback (Christian Schoenebeck) [Orabug: 39601986] {CVE-2026-9238}
    - 9pfs/virtio: implement msize_limit callback (Christian Schoenebeck) [Orabug: 39601986] {CVE-2026-9238}
    - hw/9pfs: add msize_limit transport callback (Christian Schoenebeck) [Orabug: 39601986] {CVE-2026-9238}
    - 9pfs: fix missing rename lock in v9fs_co_readdir_many (CVE-2026-48004) (sin99xx) [Orabug: 39478419]     {CVE-2026-48004}
    - tests/qtest/libqos: add qvirtqueue_reset_pool() for descriptor pool reset (Christian Schoenebeck)     [Orabug: 39636027] {CVE-2026-8348}
    - libvduse: fix buffer overflow in vduse_queue_read_indirect_desc() (Stefano Garzarella) [Orabug:
    39447322] {CVE-2026-6425}
    - libvhost-user: fix buffer overflow in virtqueue_read_indirect_desc() (Stefano Garzarella) [Orabug:
    39447322] {CVE-2026-6425}
    - virtio-blk: add missing VIRTIO_BLK_T_SCSI_CMD size check (CVE-2026-48914) (Stefan Hajnoczi) [Orabug:
    39522394] {CVE-2026-48914}
    - ui: fix validation of VNC extended clipboard data length (Heechan Kang) [Orabug: 39442988]     {CVE-2026-8343}
    - ui/vnc: fix OOB read updating VNC update frequency stats (Daniel P. Berrange) [Orabug: 39447326]     {CVE-2026-48003}
    - ui/vnc: fix OOB write in lossy rect worker code (Daniel P. Berrange) [Orabug: 39447332] {CVE-2026-48002}
    - ui/vnc: fix OOB write in VNC stats array (Daniel P. Berrange) [Orabug: 39447332] {CVE-2026-48002}
    - lsi53c895a: keep a reference to the device while SCRIPTS execute (Paolo Bonzini) [Orabug: 37517793]     {CVE-2024-6519}
    - hw/scsi/lsi53c895a: fix memory leak in lsi_scsi_realize() (Zheng Huang) [Orabug: 37517793]     {CVE-2024-6519}
    - hw/scsi/lsi53c895a: bump instruction limit in scripts processing to fix regression (Fiona Ebner)     [Orabug: 37517793] {CVE-2024-6519}
    - hw/scsi/lsi53c895a: add timer to scripts processing (Sven Schnelle) [Orabug: 37517793] {CVE-2024-6519}
    - virtio-scsi: pass the same cdb_size to virtio_scsi_pop_req and virtio_scsi_handle_cmd_req_prepare (Paolo     Bonzini) [Orabug: 39414097] {CVE-2026-5763}
    - softmmu: Support concurrent bounce buffers (Mattias Nissler) [Orabug: 37509310] {CVE-2024-8612}
    - system/physmem: Per-AddressSpace bounce buffering (Mattias Nissler) [Orabug: 37509310] {CVE-2024-8612}
    - system/physmem: Propagate AddressSpace to MapClient helpers (Mattias Nissler) [Orabug: 37509310]     {CVE-2024-8612}

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-2026-50337 advisory.

    - Limit recursion in ri-records (CVE-2021-3622)       resolves: rhbz#1976194
    - Bounds check for block exceeding page length (CVE-2021-3504)       resolves: rhbz#1950501
    - 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-2024-7383 NBD server improper certificate validation       resolves: RHEL-52728
    - 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-2025-49133       Resolves: RHEL-96251
    - Backport 'tpm2: Check size of buffer before accessing it' (CVE-2023-1017 & CVE-2023-1018)       Resolves: rhbz#2173964       Resolves: rhbz#2173970
    - 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
    - Fix CVE-2021-3716 NBD_OPT_STRUCTURED_REPLY injection on STARTTLS       resolves: rhbz#1994915
    - ui: fix validation of VNC extended clipboard data length (Heechan Kang) [Orabug: 39442988]     {CVE-2026-8343}
    - ui/vnc: fix OOB read updating VNC update frequency stats (Daniel P. Berrange) [Orabug: 39447326]     {CVE-2026-48003}
    - ui/vnc: fix OOB write in lossy rect worker code (Daniel P. Berrange) [Orabug: 39447332] {CVE-2026-48002}
    - ui/vnc: fix OOB write in VNC stats array (Daniel P. Berrange) [Orabug: 39447332] {CVE-2026-48002}
    - lsi53c895a: keep a reference to the device while SCRIPTS execute (Paolo Bonzini) [Orabug: 37517793]     {CVE-2024-6519}
    - hw/scsi/lsi53c895a: fix memory leak in lsi_scsi_realize() (Zheng Huang) [Orabug: 37517793]     {CVE-2024-6519}
    - hw/scsi/lsi53c895a: bump instruction limit in scripts processing to fix regression (Fiona Ebner)     [Orabug: 37517793] {CVE-2024-6519}
    - hw/scsi/lsi53c895a: add timer to scripts processing (Sven Schnelle) [Orabug: 37517793] {CVE-2024-6519}
    - virtio-scsi: pass the same cdb_size to virtio_scsi_pop_req and virtio_scsi_handle_cmd_req_prepare (Paolo     Bonzini) [Orabug: 39414097] {CVE-2026-5763}
    - softmmu: Support concurrent bounce buffers (Mattias Nissler) [Orabug: 37509310] {CVE-2024-8612}
    - system/physmem: Per-AddressSpace bounce buffering (Mattias Nissler) [Orabug: 37509310] {CVE-2024-8612}
    - system/physmem: Propagate AddressSpace to MapClient helpers (Mattias Nissler) [Orabug: 37509310]     {CVE-2024-8612}
    - Document CVEs (Mark Kanda) {CVE-2025-54566} {CVE-2025-54567} {CVE-2025-8860} {CVE-2026-0665}     {CVE-2026-3886}
    - hw/usb/hcd-ohci: check for MPS=0 to avoid infinite loop (Jenny Guanni Qu) [Orabug: 39160764]     {CVE-2026-3890}
    - hyperv/syndbg: check length returned by cpu_physical_memory_map() (Paolo Bonzini) [Orabug: 39160749]     {CVE-2026-3842}
    - block/vmdk: fix OOB read in vmdk_read_extent() (Halil Oktay) [Orabug: 39160776] {CVE-2026-2243}
    - cryptodev-builtin: Limit the maximum size (zhenwei pi) [Orabug: 39173335] {CVE-2025-14876}
    - hw/virtio/virtio-crypto: verify asym request size (zhenwei pi) [Orabug: 39173335] {CVE-2025-14876}
    - io: fix use after free in websocket handshake code (Daniel P. Berrange) [Orabug: 38687831]     {CVE-2025-11234}

    seabios
    - Add fix for CVE-2022-23645.
      Resolves: rhbz#2056517
    - Update to 0.4.2, to address potential symlink vulnerabilities (CVE-2020-28407).
      Resolves: rhbz#1906043
    - Fix CVE-2022-2211 Denial of Service in --key parameter       resolves: rhbz#2102720

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.

The remote Ubuntu 22.04 LTS / 24.04 LTS / 25.10 host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-8161-1 advisory.

    It was discovered that the LSI53C895A SCSI Host Bus Adapter implementation of QEMU incorrectly handled     memory. 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 QEMU could be made to read out of bounds when reading VMDK images. If a user or an     automated system were tricked into opening a specially crafted VMDK image, an attacker could possibly use     this issue to leak sensitive informaton or cause QEMU to crash, resulting in a denial of service.
    (CVE-2026-2243)

    It was discovered that the virtio-snd device implementation of QEMU could be made to write out of bounds.
    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 24.04 LTS and Ubuntu     25.10. (CVE-2026-3195)

    It was discovered that the virtio-snd device implementation of QEMU contained an arithmetic 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 24.04 LTS and Ubuntu 25.10.
    (CVE-2026-3196)

    It was discovered that the Hyper-V Synthetic Debugging device implementation of QEMU could me made to     write out of bounds. 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     24.04 LTS and Ubuntu 25.10. (CVE-2026-3842)

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 Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - A use-after-free vulnerability was found in the QEMU LSI53C895A SCSI Host Bus Adapter emulation. This     issue can lead to a crash or VM escape. (CVE-2024-6519)

Note that Nessus relies on the presence of the package as reported by the vendor.

The version of qemu installed on the remote host is prior to 3.1.0-8. It is, therefore, affected by a vulnerability as referenced in the ALAS2-2025-2742 advisory.

    A use-after-free vulnerability was found in the QEMU LSI53C895A SCSI Host Bus Adapter emulation. This     issue can lead to a crash or VM escape. (CVE-2024-6519)

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

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

ID	Name	Product	Family	Type	Severity
457269	Echo: qemu: security update to 1:10.0.8+ds-0+deb13u1+e2	Tenable Cloud Security	Echo Local Security Checks	Local	high
457269	Echo: qemu: security update to 1:10.0.8+ds-0+deb13u1+e2	Tenable Self-Hosted Container Security	Echo Local Security Checks	Local	high
346769	EulerOS 2.0 SP15 : qemu (EulerOS-SA-2026-3820)	Nessus	Huawei Local Security Checks	Local	medium
346751	EulerOS 2.0 SP15 : qemu (EulerOS-SA-2026-3795)	Nessus	Huawei Local Security Checks	Local	medium
339119	Oracle Linux 9 : qemu-kvm (ELSA-2026-500220)	Nessus	Oracle Linux Local Security Checks	Local	high
322307	Oracle Linux 8 : virt:kvm_utils3 (ELSA-2026-50337)	Nessus	Oracle Linux Local Security Checks	Local	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	Local	high
306091	Ubuntu 22.04 LTS / 24.04 LTS / 25.10 : QEMU vulnerabilities (USN-8161-1)	Nessus	Ubuntu Local Security Checks	Local	high
232141	Linux Distros Unpatched Vulnerability : CVE-2024-6519	Nessus	Misc.	Local	high
214975	Amazon Linux 2 : qemu (ALAS-2025-2742)	Nessus	Amazon Linux Local Security Checks	Local	high

Detections

Analytics

CVE-2024-6519

high

Tenable Plugins

high

high

medium

medium

high

high

high

high

high

high