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: 7.5EPSS: 0%CPEs: 2EXPL: 0CVE-2022-26353 – QEMU: virtio-net: map leaking on error during receive
https://notcve.org/view.php?id=CVE-2022-26353
A flaw was found in the virtio-net device of QEMU. This flaw was inadvertently introduced with the fix for CVE-2021-3748, which forgot to unmap the cached virtqueue elements on error, leading to memory leakage and other unexpected results. Affected QEMU version: 6.2.0. Se ha encontrado un fallo en el dispositivo virtio-net de QEMU. Este fallo fue introducido inadvertidamente con la corrección de CVE-2021-3748, que olvidaba desmapear los elementos de virtqueue almacenados en caché en caso de error, conllevando a pérdidas de memoria y otros resultados no esperados. • https://gitlab.com/qemu-project/qemu/-/commit/abe300d9d894f7138e1af7c8e9c88c04bfe98b37 https://lists.nongnu.org/archive/html/qemu-devel/2022-03/msg02438.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-2022-26353 https://bugzilla.redhat.com/show_bug.cgi?id=2063197 • CWE-772: Missing Release of Resource after Effective Lifetime •