CVE-2023-42467
Published: 11 September 2023
QEMU through 8.0.0 could trigger a division by zero in scsi_disk_reset in hw/scsi/scsi-disk.c because scsi_disk_emulate_mode_select does not prevent s->qdev.blocksize from being 256. This stops QEMU and the guest immediately.
Notes
| Author | Note |
|---|---|
Priority reason: Privileged guest user can crash own VM only |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
qemu Launchpad, Ubuntu, Debian |
trusty |
Needs triage
|
| xenial |
Needs triage
|
|
| bionic |
Needs triage
|
|
| focal |
Needs triage
|
|
| jammy |
Needs triage
|
|
| lunar |
Needs triage
|
|
| upstream |
Needs triage
|
|
| mantic |
Needs triage
|
|
|
Patches: upstream: https://gitlab.com/qemu-project/qemu/-/commit/7cfcc79b0ab800959716738aff9419f53fc68c9c |
||
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 5.5 |
| Attack vector | Local |
| Attack complexity | Low |
| Privileges required | Low |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | None |
| Availability impact | High |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |