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CVE-2021-3930

Status Candidate

Overview

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.

Related Files

Ubuntu Security Notice USN-5772-1
Posted Dec 12, 2022
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5772-1 - It was discovered that QEMU incorrectly handled bulk transfers from SPICE clients. A remote attacker could use this issue to cause QEMU to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 14.04 ESM and Ubuntu 16.04 ESM. It was discovered that QEMU did not properly manage memory when it transfers the USB packets. A malicious guest attacker could use this issue to cause QEMU to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS and Ubuntu 22.04 LTS.

tags | advisory, remote, denial of service, arbitrary
systems | linux, ubuntu
advisories | CVE-2021-3682, CVE-2021-3750, CVE-2021-3930, CVE-2022-0216, CVE-2022-2962, CVE-2022-3165
SHA-256 | 768024681dfd9068a64b260049ff17b38a9319596abe4a29fe8b4d7a96a0987a
Ubuntu Security Notice USN-5307-1
Posted Feb 28, 2022
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5307-1 - Gaoning Pan discovered that QEMU incorrectly handled the floppy disk emulator. An attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. Gaoning Pan discovered that the QEMU vmxnet3 NIC emulator incorrectly handled certain values. An attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. It was discovered that the QEMU vhost-user GPU device contained several security issues. An attacker inside the guest could use these issues to cause QEMU to crash, resulting in a denial of service, leak sensitive information, or possibly execute arbitrary code. This issue only affected Ubuntu 21.10.

tags | advisory, denial of service, arbitrary
systems | linux, ubuntu
advisories | CVE-2021-20196, CVE-2021-20203, CVE-2021-3546, CVE-2021-3682, CVE-2021-3713, CVE-2021-3748, CVE-2021-3930, CVE-2021-4158, CVE-2022-0358
SHA-256 | 93c74c6aff190d655abe77b615cbb1fdb9e7fd27501547e3980eeee5e03af9e9
Red Hat Security Advisory 2022-0081-03
Posted Jan 12, 2022
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2022-0081-03 - The Advanced Virtualization module provides the user-space component for running virtual machines that use KVM in environments managed by Red Hat products.

tags | advisory
systems | linux, redhat
advisories | CVE-2021-20257, CVE-2021-3930
SHA-256 | ed2aa200711dad8069fe7e18296db0ca281fe1d5f8e59fd39f90bfeb17cac0c3
Red Hat Security Advisory 2021-5238-02
Posted Dec 22, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-5238-02 - Kernel-based Virtual Machine offers a full virtualization solution for Linux on numerous hardware platforms. The virt:rhel module contains packages which provide user-space components used to run virtual machines using KVM. The packages also provide APIs for managing and interacting with the virtualized systems.

tags | advisory, kernel
systems | linux, redhat
advisories | CVE-2021-20257, CVE-2021-3930
SHA-256 | 03fcb0265966a785783f554582077e70cb5b7d4209ae9099daed4d2ad3bdfc14
Red Hat Security Advisory 2021-5065-05
Posted Dec 10, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-5065-05 - The Advanced Virtualization module provides the user-space component for running virtual machines that use KVM in environments managed by Red Hat products.

tags | advisory
systems | linux, redhat
advisories | CVE-2021-3930
SHA-256 | 2972402991f09d373980eb4e3eeee23e57db172ad950aeeaa09dfecd2725604e
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