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
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 QEMU. Una doble obtención de los valores controlados por el huésped "cursor-)header.width" y "cursor-)header.height" puede conllevar a una asignación de un pequeño objeto cursor seguido de un posterior desbordamiento del búfer en la región heap de la memoria. • https://bugzilla.redhat.com/show_bug.cgi?id=2036966 https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html https://security.gentoo.org/glsa/202208-27 https://starlabs.sg/advisories/21-4207 https://www.debian.org/security/2022/dsa-5133 https://access.redhat.com/security/cve/CVE-2021-4207 • 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
https://notcve.org/view.php?id=CVE-2022-1050
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 uso después de la liberación • https://bugzilla.redhat.com/show_bug.cgi?id=2069625 https://lists.debian.org/debian-lts-announce/2023/03/msg00013.html • CWE-416: Use After Free •
CVSS: 6.5EPSS: 0%CPEs: 2EXPL: 1CVE-2021-3582
https://notcve.org/view.php?id=CVE-2021-3582
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 https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html https://security.gentoo.org/glsa/202208-27 https://security.netapp.com/advisory/ntap-20220429-0003 • 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
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 https://lists.debian.org/debian-lts-announce/2022/04/msg00002.html https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html https://security.gentoo.org/glsa/202208-27 https://security.netapp.com/advisory/ntap-20220425-0003 https://www.debian.org/security/2022/dsa-5133 https://access.redhat.com/security/cve/CVE-2022-26354 https://bugzilla.redhat.com/show_bug.cgi?id=2063257 • 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
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 their privileges within the guest. A malicious local user in the host might also leverage this unexpected executable file created by the guest to escalate their privileges on the host system. • https://access.redhat.com/security/cve/CVE-2022-0358 https://bugzilla.redhat.com/show_bug.cgi?id=2044863 https://gitlab.com/qemu-project/qemu/-/commit/449e8171f96a6a944d1f3b7d3627ae059eae21ca https://security.netapp.com/advisory/ntap-20221007-0008 • CWE-273: Improper Check for Dropped Privileges •