CVSS: 8.2EPSS: 0%CPEs: 3EXPL: 1CVE-2021-3750 – QEMU: hcd-ehci: DMA reentrancy issue leads to use-after-free
https://notcve.org/view.php?id=CVE-2021-3750
02 May 2022 — A DMA reentrancy issue was found in the USB EHCI controller emulation of QEMU. EHCI does not verify if the Buffer Pointer overlaps with its MMIO region when it transfers the USB packets. Crafted content may be written to the controller's registers and trigger undesirable actions (such as reset) while the device is still transferring packets. This can ultimately lead to a use-after-free issue. A malicious guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service condit... • https://bugzilla.redhat.com/show_bug.cgi?id=1999073 • CWE-416: Use After Free •
CVSS: 8.2EPSS: 0%CPEs: 5EXPL: 1CVE-2021-4206 – QEMU: QXL: integer overflow in cursor_alloc() can lead to heap buffer overflow
https://notcve.org/view.php?id=CVE-2021-4206
29 Apr 2022 — A flaw was found in the QXL display device emulation in QEMU. An integer overflow in the cursor_alloc() function can lead to the allocation of a small cursor object followed by a subsequent heap-based buffer overflow. This flaw allows a malicious privileged guest user to crash the QEMU process on the host or potentially execute arbitrary code within the context of the QEMU process. Se ha encontrado un fallo en la emulación del dispositivo de visualización QXL en QEMU. Un desbordamiento de enteros en la func... • https://bugzilla.redhat.com/show_bug.cgi?id=2036998 • CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') CWE-131: Incorrect Calculation of Buffer Size CWE-190: Integer Overflow or Wraparound •
CVSS: 8.2EPSS: 0%CPEs: 5EXPL: 1CVE-2021-4207 – QEMU: QXL: double fetch in qxl_cursor() can lead to heap buffer overflow
https://notcve.org/view.php?id=CVE-2021-4207
29 Apr 2022 — A flaw was found in the QXL display device emulation in QEMU. A double fetch of guest controlled values `cursor->header.width` and `cursor->header.height` can lead to the allocation of a small cursor object followed by a subsequent heap-based buffer overflow. A malicious privileged guest user could use this flaw to crash the QEMU process on the host or potentially execute arbitrary code within the context of the QEMU process. Se ha encontrado un fallo en la emulación del dispositivo de visualización QXL en ... • https://bugzilla.redhat.com/show_bug.cgi?id=2036966 • CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') •
CVSS: 8.8EPSS: 0%CPEs: 1EXPL: 0CVE-2022-1050 – Ubuntu Security Notice USN-6167-1
https://notcve.org/view.php?id=CVE-2022-1050
29 Mar 2022 — A flaw was found in the QEMU implementation of VMWare's paravirtual RDMA device. This flaw allows a crafted guest driver to execute HW commands when shared buffers are not yet allocated, potentially leading to a use-after-free condition. Se ha encontrado un fallo en la implementación de QEMU del dispositivo RDMA paravirtual de VMWare. Este defecto permite que un controlador de huésped crafteado ejecute comandos HW cuando los búferes compartidos aún no están asignados, lo que puede llevar a una condición de ... • https://bugzilla.redhat.com/show_bug.cgi?id=2069625 • CWE-416: Use After Free •
CVSS: 6.5EPSS: 0%CPEs: 2EXPL: 1CVE-2021-3582 – Gentoo Linux Security Advisory 202208-27
https://notcve.org/view.php?id=CVE-2021-3582
25 Mar 2022 — A flaw was found in the QEMU implementation of VMWare's paravirtual RDMA device. The issue occurs while handling a "PVRDMA_CMD_CREATE_MR" command due to improper memory remapping (mremap). This flaw allows a malicious guest to crash the QEMU process on the host. The highest threat from this vulnerability is to system availability. Se ha encontrado un fallo en la implementación de QEMU del dispositivo RDMA paravirtual de VMWare. • https://bugzilla.redhat.com/show_bug.cgi?id=1966266 • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •
CVSS: 3.2EPSS: 0%CPEs: 3EXPL: 0CVE-2022-26354 – QEMU: vhost-vsock: missing virtqueue detach on error can lead to memory leak
https://notcve.org/view.php?id=CVE-2022-26354
16 Mar 2022 — A flaw was found in the vhost-vsock device of QEMU. In case of error, an invalid element was not detached from the virtqueue before freeing its memory, leading to memory leakage and other unexpected results. Affected QEMU versions <= 6.2.0. Se ha encontrado un fallo en el dispositivo vhost-vsock de QEMU. En caso de error, un elemento inválido no era desprendido de la virtqueue antes de liberar su memoria, conllevando a una pérdida de memoria y otros resultados no esperados. • https://gitlab.com/qemu-project/qemu/-/commit/8d1b247f3748ac4078524130c6d7ae42b6140aaf • CWE-772: Missing Release of Resource after Effective Lifetime •
CVSS: 7.8EPSS: 0%CPEs: 2EXPL: 0CVE-2022-0358 – QEMU: virtiofsd: potential privilege escalation via CVE-2018-13405
https://notcve.org/view.php?id=CVE-2022-0358
28 Feb 2022 — A flaw was found in the QEMU virtio-fs shared file system daemon (virtiofsd) implementation. This flaw is strictly related to CVE-2018-13405. A local guest user can create files in the directories shared by virtio-fs with unintended group ownership in a scenario where a directory is SGID to a certain group and is writable by a user who is not a member of the group. This could allow a malicious unprivileged user inside the guest to gain access to resources accessible to the root group, potentially escalating... • https://access.redhat.com/security/cve/CVE-2022-0358 • CWE-273: Improper Check for Dropped Privileges •
CVSS: 6.0EPSS: 0%CPEs: 2EXPL: 1CVE-2021-4158 – QEMU: NULL pointer dereference in pci_write() in hw/acpi/pcihp.c
https://notcve.org/view.php?id=CVE-2021-4158
28 Feb 2022 — A NULL pointer dereference issue was found in the ACPI code of QEMU. A malicious, privileged user within the guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service condition. Se ha encontrado un problema de desreferencia de puntero NULL en el código ACPI de QEMU. Un usuario malicioso y con privilegios dentro del huésped podía usar este fallo para bloquear el proceso de QEMU en el host, resultando en una situación de denegación de servicio. Gaoning Pan discovered th... • https://access.redhat.com/security/cve/CVE-2021-4158 • CWE-476: NULL Pointer Dereference •
CVSS: 6.0EPSS: 0%CPEs: 3EXPL: 0CVE-2021-3607 – Gentoo Linux Security Advisory 202208-27
https://notcve.org/view.php?id=CVE-2021-3607
24 Feb 2022 — An integer overflow was found in the QEMU implementation of VMWare's paravirtual RDMA device in versions prior to 6.1.0. The issue occurs while handling a "PVRDMA_REG_DSRHIGH" write from the guest due to improper input validation. This flaw allows a privileged guest user to make QEMU allocate a large amount of memory, resulting in a denial of service. The highest threat from this vulnerability is to system availability. Se encontró un desbordamiento de enteros en la implementación de QEMU del dispositivo RD... • https://bugzilla.redhat.com/show_bug.cgi?id=1973349 • CWE-190: Integer Overflow or Wraparound •
CVSS: 5.5EPSS: 0%CPEs: 3EXPL: 0CVE-2021-3947 – Gentoo Linux Security Advisory 202208-27
https://notcve.org/view.php?id=CVE-2021-3947
18 Feb 2022 — A stack-buffer-overflow was found in QEMU in the NVME component. The flaw lies in nvme_changed_nslist() where a malicious guest controlling certain input can read out of bounds memory. A malicious user could use this flaw leading to disclosure of sensitive information. Se ha encontrado un desbordamiento de pila en QEMU en el componente NVME. El fallo es encontrado en nvme_changed_nslist(), donde un huésped malicioso que controle determinadas entradas puede leer memoria fuera de límites. • https://bugzilla.redhat.com/show_bug.cgi?id=2021869 • CWE-125: Out-of-bounds Read •