CVE-2023-3301
Published: 13 September 2023
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.
Notes
| Author | Note |
|---|---|
| mdeslaur | introduced in 5.1 |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
qemu Launchpad, Ubuntu, Debian |
upstream |
Released
(1:8.0.3+dfsg-1)
|
| bionic |
Not vulnerable
(code not present)
|
|
| focal |
Not vulnerable
(1:4.2-3ubuntu6.27)
|
|
| jammy |
Needed
|
|
| lunar |
Needed
|
|
| trusty |
Not vulnerable
(code not present)
|
|
| xenial |
Not vulnerable
(code not present)
|
|
| mantic |
Needed
|
|
|
Patches: upstream: https://github.com/qemu/qemu/commit/a0d7215e339b61c7d7a7b3fcf754954d80d93eb8 (v8.1.0-rc0) upstream: https://github.com/qemu/qemu/commit/aab37b2002811f112d5c26337473486d7d585881 (v8.0.3) |
||
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 5.6 |
| Attack vector | Local |
| Attack complexity | High |
| Privileges required | Low |
| User interaction | None |
| Scope | Changed |
| Confidentiality | None |
| Integrity impact | None |
| Availability impact | High |
| Vector | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H |