What’s Vulnerable › Vulnerabilities

CVE-2023-42467

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2023-09-11 · updated 2026-06-17
• Weakness: CWE-369

Description

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.

Affected products

• QEMU: through 8.0.0

References

• https://gitlab.com/qemu-project/qemu/-/commit/7cfcc79b0ab800959716738aff9419f53fc68c9c
• https://gitlab.com/qemu-project/qemu/-/issues/1813
• https://security.netapp.com/advisory/ntap-20231103-0005/
• https://gitlab.com/qemu-project/qemu/-/commit/7cfcc79b0ab800959716738aff9419f53fc68c9c
• https://gitlab.com/qemu-project/qemu/-/issues/1813
• https://security.netapp.com/advisory/ntap-20231103-0005/

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