Vulnerability in Qemu
CVE-2023-42467
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.004 (33.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 33rd percentile — 33.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: +0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- gitlab.com/qemu-project/qemu/-/issues/1813 (Exploit, Third Party Advisory, Issue Tracking)
- gitlab.com/qemu-project/qemu/-/commit/7cfcc79b0ab800959716738aff9419f53fc68c9c
- security.netapp.com/advisory/ntap-20231103-0005/
Frequently asked questions
- What is CVE-2023-42467?
- CVE-2023-42467 is a medium-severity vulnerability in Qemu, classified under Divide By Zero. CVSS score: 5.5/10. Published 2023-09-11.
- How severe is CVE-2023-42467?
- Medium severity. CVSS v3 base score is 5.5 out of 10.
- Is CVE-2023-42467 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.