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CVE-2023-42467

Date: September 10, 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.

Language: C

Severity Score

Related Resources (7)

https://security-tracker.debian.org/tracker/CVE-2023-42467
https://nvd.nist.gov/vuln/detail/CVE-2023-42467
https://gitlab.com/qemu-project/qemu/-/issues/1813
https://gitlab.com/qemu-project/qemu/-/commit/7cfcc79b0ab800959716738aff9419f53fc68c9c
https://security.netapp.com/advisory/ntap-20231103-0005/
https://gitlab.com/thuth/qemu/-/commit/3f91104484e5bf55b56d7e1b039a4a5a17d0c1a7
https://www.mend.io/vulnerability-database/CVE-2023-42467

Severity Score

Weakness Type (CWE)

Divide By Zero

CWE-369

CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

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