CVE-2023-3301: Triggerable assertion due to race condition in hot-unplug
First published: Sun Jun 18 2023(Updated: )
A flaw was found in QEMU. The async nature of hot-unplug enables a race scenario where the net device backend is cleared before the virtio-net pci frontend has been unplugged. A malicious guest could use this time window to trigger an assertion and cause a denial of service.
Credit: secalert@redhat.com secalert@redhat.com secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| QEMU qemu | <=8.0.3 | |
| Redhat Enterprise Linux | =8.0 | |
| Redhat Enterprise Linux | =9.0 | |
| redhat/qemu | <8.1.0 | 8.1.0 |
| ubuntu/qemu | <1:8.0.3+dfsg-1 | 1:8.0.3+dfsg-1 |
| ubuntu/qemu | <1:6.2+dfsg-2ubuntu6.16 | 1:6.2+dfsg-2ubuntu6.16 |
| ubuntu/qemu | <1:7.2+dfsg-5ubuntu2.4 | 1:7.2+dfsg-5ubuntu2.4 |
| debian/qemu | 1:3.1+dfsg-8+deb10u8 1:3.1+dfsg-8+deb10u12 1:5.2+dfsg-11+deb11u3 1:8.2.1+ds-2 1:8.2.2+ds-2 |
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Reference Links
- https://access.redhat.com/security/cve/CVE-2023-3301
- https://bugzilla.redhat.com/show_bug.cgi?id=2215784
- https://security.netapp.com/advisory/ntap-20231020-0008/
- https://launchpad.net/bugs/cve/CVE-2023-3301
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2228125
- https://github.com/qemu/qemu/commit/a0d7215e339b61c7d7a7b3fcf754954d80d93eb8
- https://access.redhat.com/errata/RHSA-2023:6980
- https://github.com/qemu/qemu/commit/aab37b2002811f112d5c26337473486d7d585881
- https://security-tracker.debian.org/tracker/CVE-2023-3301
- https://ubuntu.com/security/notices/USN-6567-1
- https://www.cve.org/CVERecord?id=CVE-2023-3301
- https://nvd.nist.gov/vuln/detail/CVE-2023-3301
- https://ubuntu.com/security/CVE-2023-3301
Frequently Asked Questions
What is the vulnerability ID for this flaw?
The vulnerability ID for this flaw is CVE-2023-3301.
What is the severity of CVE-2023-3301?
The severity of CVE-2023-3301 is medium with a CVSS score of 5.6.
How does this flaw in QEMU affect the system?
This flaw in QEMU can be exploited by a malicious guest to cause a denial of service.
Which software versions are affected by CVE-2023-3301?
QEMU versions 8.0.3 up to, but excluding, 8.1.0 are affected. Redhat Enterprise Linux 8.0 and 9.0 are also affected.
Is there a fix for CVE-2023-3301?
Yes, a fix is available for CVE-2023-3301. It is recommended to update to version 8.1.0 of QEMU to mitigate the vulnerability.
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