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.

EPSS: 0.004 (30.3th percentile) — read the EPSS interpretation.

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.

Affected products

  • Qemu
  • N/a — versions n/a

Weakness classification (CWE)

Public proof-of-concept exploits

References

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.