CVE-2021-3713

Related Vulnerabilities: CVE-2021-3713  

An out-of-bounds write flaw was found in the UAS (USB Attached SCSI) device emulation of QEMU. 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.

Description

An out-of-bounds write flaw was found in the UAS (USB Attached SCSI) device emulation of QEMU. 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.

Statement

This flaw does not affect the versions of `qemu-kvm` as shipped with Red Hat products because the UAS device is not enabled.

This flaw does not affect the versions of qemu-kvm as shipped with Red Hat products because the UAS device is not enabled.

Additional Information

  • Bugzilla 1994640: CVE-2021-3713 QEMU: out-of-bounds write in UAS (USB Attached SCSI) device emulation
  • CWE-787: Out-of-bounds Write
  • FAQ: Frequently asked questions about CVE-2021-3713