Integer overflow in Qemu
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.
Vulnerability class: Integer Overflow
EPSS: 0.003 (22.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.0 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H.
Affected products
- Qemu
- Debian Debian_linux — versions 10.0
- Fedoraproject Fedora — versions 34
- N/a Qemu — versions qemu-kvm 6.1.0
Weakness classification (CWE)
References
- secalert@redhat.com (Third Party Advisory, x_refsource_MISC, Issue Tracking)
- secalert@redhat.com (Patch, Mailing List, Third Party Advisory, x_refsource_MISC)
- secalert@redhat.com (x_refsource_CONFIRM, Third Party Advisory)
- secalert@redhat.com (vendor-advisory, Third Party Advisory, x_refsource_GENTOO)
- secalert@redhat.com (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-3607?
- CVE-2021-3607 is a medium-severity vulnerability in Qemu, classified under Integer Overflow or Wraparound. CVSS score: 6.0/10. Published 2022-02-24.
- How severe is CVE-2021-3607?
- Medium severity. CVSS v3 base score is 6.0 out of 10.