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.

The remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:2385-1 advisory.

    - CVE-2026-2243: incorrect bounds check leads to heap out-of-bounds read and a 12-byte information leak     when processing       specially crafted VMDK files (bsc#1258509).
    - CVE-2026-3195: heap buffer overflow when reading input audio in the virtio-snd device input callback due     to       insufficient checks in `virtio_snd_pcm_in_cb` (bsc#1259080).
    - CVE-2026-3196: integer overflow in the virtio-snd device via PCM_INFO requests from the guest leads to     unbounded       memory allocation and host denial-of-service (bsc#1259079).
    - CVE-2026-3842: hyperv/syndbg: missing mapped-length guard after cpu_physical_memory_map causes host OOB     write       (bsc#1262089).

Tenable has extracted the preceding description block directly from the SUSE 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 SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:2386-1 advisory.

    - CVE-2025-14876: qemu-kvm: Unbounded allocation in virtio-crypto (bsc#1255400).
    - CVE-2026-0665: out-of-bounds heap access can lead to a denial of service or potential memory corruption     (bsc#1256484).
    - CVE-2026-2243: incorrect bounds check leads to heap out-of-bounds read and a 12-byte information leak     when processing       specially crafted VMDK files (bsc#1258509).
    - CVE-2026-3195: heap buffer overflow when reading input audio in the virtio-snd device input callback due     to       insufficient checks in `virtio_snd_pcm_in_cb` (bsc#1259080).
    - CVE-2026-3196: integer overflow in the virtio-snd device via PCM_INFO requests from the guest leads to     unbounded       memory allocation and host denial-of-service (bsc#1259079).
    - CVE-2026-3842: hyperv/syndbg: missing mapped-length guard after cpu_physical_memory_map causes host OOB     write       (bsc#1262089).

Tenable has extracted the preceding description block directly from the SUSE 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 openSUSE 16 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2026:20567-1 advisory.

    Update to version 10.0.9.

    Security issues fixed:

    - CVE-2026-3196: unbounded memory allocation and host denial-of-service via PCM_INFO requests sent from     the guest       (bsc#1259079).
    - CVE-2026-3195: heap out-of-bounds write when reading input audio in the virtio-snd device input callback       (bsc#1259080).
    - CVE-2026-2243: heap out-of-bounds read and 12-byte information leak when processing specially crafted     VMDK files       with qemu-img (bsc#1258509).

    Other updates and bugfixes:

    - Version 10.0.9:
       * Full backport list: https://lore.kernel.org/qemu-     devel/20260318045608.7E1B513DFF6@think4mjt.localdomain/
       * hyperv/syndbg: check length returned by cpu_physical_memory_map()
       * fuse: Copy write buffer content before polling
       * target/loongarch: Avoid recursive PNX exception on CSR_BADI fetch
       * target/loongarch: Preserve PTE permission bits in LDPTE
       * hw/net/npcm_gmac: Catch accesses off the end of the register array
       * linux-user: fix TIOCGSID ioctl
       * tests/tcg/multiarch/test-mmap: Check mmaps beyond reserved_va
       * bsd-user: Deal with mmap where start > reserved_va
       * linux-user: Deal with mmap where start > reserved_va
       * hw/net/xilinx_ethlite: Check for oversized TX packets
       * virtio-gpu: Ensure BHs are invoked only from main-loop thread
       * block/nfs: Do not enter coroutine from CB
       * block: Never drop BLOCK_IO_ERROR with action=stop for rate limiting
       * block/throttle-groups: fix deadlock with iolimits and muliple iothreads
       * mirror: Fix missed dirty bitmap writes during startup
       * block/curl: fix concurrent completion handling
       * block/vmdk: fix OOB read in vmdk_read_extent()
       * hw/net/smc91c111: Don't allow negative-length packets
       * io: fix cleanup for websock I/O source data on cancellation
       * io: fix cleanup for TLS I/O source data on cancellation
       * io: separate freeing of tasks from marking them as complete
       * target/i386/hvf/x86_mmu: Fix compiler warning
       * hw/i386/vmmouse: Fix hypercall clobbers
       * tests/docker: upgrade most non-lcitool debian tests to debian 13
       * hw/9pfs: fix missing EOPNOTSUPP on Twstat and Trenameat for fs synth driver
       * hw/9pfs: fix data race in v9fs_mark_fids_unreclaim()

    - Add support for AMD-Turn CPUs (jsc#PED-13174)
      * target/i386: Add support for EPYC-Turin model (jsc#PED-13174)
      * target/i386: Update EPYC-Genoa for Cache property, perfmon-v2, RAS and SVM feature bits     (jsc#PED-13174)
      * target/i386: Add couple of feature bits in CPUID_Fn80000021_EAX (jsc#PED-13174)
      * target/i386: Update EPYC-Milan CPU model for Cache property, RAS, SVM feature bits (jsc#PED-13174)
      * target/i386: Update EPYC-Rome CPU model for Cache property, RAS, SVM feature bits (jsc#PED-13174)
      * target/i386: Update EPYC CPU model for Cache property, RAS, SVM feature bits (jsc#PED-13174)

Tenable has extracted the preceding description block directly from the SUSE 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.

  - Debian Linux - qemu - None  Ubuntu Linux - two potential OOB memory accesses in virtio-snd (CVE-2026-3196)

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

ID	Name	Product	Family	Severity
321048	SUSE SLED15 / SLES15 Security Update : qemu (SUSE-SU-2026:2385-1)	Nessus	SuSE Local Security Checks	medium
321014	SUSE SLES15 Security Update : qemu (SUSE-SU-2026:2386-1)	Nessus	SuSE Local Security Checks	medium
309143	openSUSE 16 Security Update : qemu (openSUSE-SU-2026:20567-1)	Nessus	SuSE Local Security Checks	medium
306091	Ubuntu 22.04 LTS / 24.04 LTS / 25.10 : QEMU vulnerabilities (USN-8161-1)	Nessus	Ubuntu Local Security Checks	high
300412	Linux Distros Unpatched Vulnerability : CVE-2026-3196	Nessus	Misc.	high

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CVE-2026-3196

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