CVE-2021-3607: Integer Overflow
First published: Thu Jun 17 2021(Updated: )
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.
Credit: secalert@redhat.com secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| QEMU qemu | <6.1.0 | |
| Debian Debian Linux | =10.0 | |
| Fedoraproject Fedora | =34 | |
| redhat/qemu-kvm | <6.1.0 | 6.1.0 |
| debian/qemu | 1:5.2+dfsg-11+deb11u3 1:5.2+dfsg-11+deb11u2 1:7.2+dfsg-7+deb12u7 1:9.2.0+ds-2 |
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Reference Links
- https://bugzilla.redhat.com/show_bug.cgi?id=1973349
- https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html
- https://lists.gnu.org/archive/html/qemu-devel/2021-06/msg07925.html
- https://security.gentoo.org/glsa/202208-27
- https://security.netapp.com/advisory/ntap-20220318-0002/
- https://launchpad.net/bugs/cve/CVE-2021-3607
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1973352
- https://access.redhat.com/security/cve/cve-2021-3607
- https://git.qemu.org/?p=qemu.git;a=commit;h=32e5703cfea07c91e6e84bcb0313f633bb146534
- https://security-tracker.debian.org/tracker/CVE-2021-3607
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3607
- https://nvd.nist.gov/vuln/detail/CVE-2021-3607
- https://ubuntu.com/security/CVE-2021-3607
Frequently Asked Questions
What is the vulnerability ID for this issue?
The vulnerability ID for this issue is CVE-2021-3607.
What is the severity level of CVE-2021-3607?
The severity level of CVE-2021-3607 is medium.
What is the affected software for CVE-2021-3607?
The affected software for CVE-2021-3607 includes QEMU qemu, Debian Debian Linux, and Fedoraproject Fedora.
How does CVE-2021-3607 occur?
CVE-2021-3607 occurs due to an integer overflow in the QEMU implementation of VMWare's paravirtual RDMA device.
Where can I find more information about CVE-2021-3607?
You can find more information about CVE-2021-3607 at the following references: [1], [2], [3]
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