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Search Results (Refine Search)

Search Parameters:
  • Results Type: Overview
  • Keyword (text search): cpe:2.3:a:qemu:qemu:2.1.1:*:*:*:*:*:*:*
  • CPE Name Search: true
There are 255 matching records.
Displaying matches 1 through 20.
Vuln ID Summary CVSS Severity
CVE-2021-3750

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 condition, or potentially execute arbitrary code within the context of the QEMU process on the host. This flaw affects QEMU versions before 7.0.0.

Published: May 02, 2022; 3:15:08 PM -0400
V3.1: 8.2 HIGH
V2.0: 4.6 MEDIUM
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.

Published: April 29, 2022; 1:15:20 PM -0400
V3.1: 8.8 HIGH
V2.0: 4.6 MEDIUM
CVE-2021-4206

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.

Published: April 29, 2022; 1:15:20 PM -0400
V3.1: 8.2 HIGH
V2.0: 4.6 MEDIUM
CVE-2021-20295

It was discovered that the update for the virt:rhel module in the RHSA-2020:4676 (https://access.redhat.com/errata/RHSA-2020:4676) erratum released as part of Red Hat Enterprise Linux 8.3 failed to include the fix for the qemu-kvm component issue CVE-2020-10756, which was previously corrected in virt:rhel/qemu-kvm via erratum RHSA-2020:4059 (https://access.redhat.com/errata/RHSA-2020:4059). CVE-2021-20295 was assigned to that Red Hat specific security regression. For more details about the original security issue CVE-2020-10756, refer to bug 1835986 or the CVE page: https://access.redhat.com/security/cve/CVE-2020-10756.

Published: April 01, 2022; 7:15:08 PM -0400
V3.1: 6.5 MEDIUM
V2.0: 2.1 LOW
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.

Published: March 29, 2022; 1:15:15 PM -0400
V3.1: 8.8 HIGH
V2.0: 4.6 MEDIUM
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.

Published: March 25, 2022; 3:15:09 PM -0400
V3.1: 6.5 MEDIUM
V2.0: 2.1 LOW
CVE-2021-3748

A use-after-free vulnerability was found in the virtio-net device of QEMU. It could occur when the descriptor's address belongs to the non direct access region, due to num_buffers being set after the virtqueue elem has been unmapped. A malicious guest could use this flaw to crash QEMU, resulting in a denial of service condition, or potentially execute code on the host with the privileges of the QEMU process.

Published: March 23, 2022; 4:15:09 PM -0400
V3.1: 8.8 HIGH
V2.0: 7.2 HIGH
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.

Published: March 16, 2022; 11:15:16 AM -0400
V3.1: 3.2 LOW
V2.0: 2.1 LOW
CVE-2021-20257

An infinite loop flaw was found in the e1000 NIC emulator of the QEMU. This issue occurs while processing transmits (tx) descriptors in process_tx_desc if various descriptor fields are initialized with invalid values. This flaw allows a guest to consume CPU cycles on the host, resulting in a denial of service. The highest threat from this vulnerability is to system availability.

Published: March 16, 2022; 11:15:09 AM -0400
V3.1: 6.5 MEDIUM
V2.0: 2.1 LOW
CVE-2021-3608

A flaw 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 and may result in a crash of QEMU or cause undefined behavior due to the access of an uninitialized pointer. The highest threat from this vulnerability is to system availability.

Published: February 24, 2022; 2:15:09 PM -0500
V3.1: 6.0 MEDIUM
V2.0: 4.9 MEDIUM
CVE-2021-3607

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.

Published: February 24, 2022; 2:15:09 PM -0500
V3.1: 6.0 MEDIUM
V2.0: 4.9 MEDIUM
CVE-2021-3947

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.

Published: February 18, 2022; 1:15:09 PM -0500
V3.1: 5.5 MEDIUM
V2.0: 2.1 LOW
CVE-2021-3930

An off-by-one error was found in the SCSI device emulation in QEMU. It could occur while processing MODE SELECT commands in mode_sense_page() if the 'page' argument was set to MODE_PAGE_ALLS (0x3f). A malicious guest could use this flaw to potentially crash QEMU, resulting in a denial of service condition.

Published: February 18, 2022; 1:15:09 PM -0500
V3.1: 6.5 MEDIUM
V2.0: 2.1 LOW
CVE-2021-3713

An out-of-bounds write flaw was found in the UAS (USB Attached SCSI) device emulation of QEMU in versions prior to 6.2.0-rc0. The device uses the guest supplied stream number unchecked, which can lead to out-of-bounds access to the UASDevice->data3 and UASDevice->status3 fields. A malicious guest user could use this flaw to crash QEMU or potentially achieve code execution with the privileges of the QEMU process on the host.

Published: August 25, 2021; 3:15:15 PM -0400
V3.1: 7.4 HIGH
V2.0: 4.6 MEDIUM
CVE-2021-3682

A flaw was found in the USB redirector device emulation of QEMU in versions prior to 6.1.0-rc2. It occurs when dropping packets during a bulk transfer from a SPICE client due to the packet queue being full. A malicious SPICE client could use this flaw to make QEMU call free() with faked heap chunk metadata, resulting in a crash of QEMU or potential code execution with the privileges of the QEMU process on the host.

Published: August 05, 2021; 4:15:09 PM -0400
V3.1: 8.5 HIGH
V2.0: 6.0 MEDIUM
CVE-2020-27661

A divide-by-zero issue was found in dwc2_handle_packet in hw/usb/hcd-dwc2.c in the hcd-dwc2 USB host controller emulation of QEMU. A malicious guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service.

Published: June 02, 2021; 12:15:08 PM -0400
V3.1: 6.5 MEDIUM
V2.0: 2.1 LOW
CVE-2021-3546

An out-of-bounds write vulnerability was found in the virtio vhost-user GPU device (vhost-user-gpu) of QEMU in versions up to and including 6.0. The flaw occurs while processing the 'VIRTIO_GPU_CMD_GET_CAPSET' command from the guest. It could allow a privileged guest user to crash the QEMU process on the host, resulting in a denial of service condition, or potential code execution with the privileges of the QEMU process.

Published: June 02, 2021; 10:15:11 AM -0400
V3.1: 8.2 HIGH
V2.0: 4.6 MEDIUM
CVE-2021-3545

An information disclosure vulnerability was found in the virtio vhost-user GPU device (vhost-user-gpu) of QEMU in versions up to and including 6.0. The flaw exists in virgl_cmd_get_capset_info() in contrib/vhost-user-gpu/virgl.c and could occur due to the read of uninitialized memory. A malicious guest could exploit this issue to leak memory from the host.

Published: June 02, 2021; 10:15:10 AM -0400
V3.1: 6.5 MEDIUM
V2.0: 2.1 LOW
CVE-2021-3544

Several memory leaks were found in the virtio vhost-user GPU device (vhost-user-gpu) of QEMU in versions up to and including 6.0. They exist in contrib/vhost-user-gpu/vhost-user-gpu.c and contrib/vhost-user-gpu/virgl.c due to improper release of memory (i.e., free) after effective lifetime.

Published: June 02, 2021; 10:15:10 AM -0400
V3.1: 6.5 MEDIUM
V2.0: 2.1 LOW
CVE-2020-35503

A NULL pointer dereference flaw was found in the megasas-gen2 SCSI host bus adapter emulation of QEMU in versions before and including 6.0. This issue occurs in the megasas_command_cancelled() callback function while dropping a SCSI request. This flaw allows a privileged guest user to crash the QEMU process on the host, resulting in a denial of service. The highest threat from this vulnerability is to system availability.

Published: June 02, 2021; 10:15:07 AM -0400
V3.1: 6.0 MEDIUM
V2.0: 2.1 LOW