CVE-2023-42467

medium

Published 2024-04-30 · Modified 2024-05-07

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CVSS v3

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CVSS v4 NEW

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not yet in upstream

VIR risk

5.5

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.

Predictions

Exploit likelihood

20%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

OS impact

SUSE Affected 1 release

Version	Status	Fixed in
—	Affected	—

AlmaLinux Fixed 1 release

Version	Status	Fixed in
9	Fixed	`qemu-img-8.2.0-11.el9_4.aarch64.rpm`

Debian Fixed 5 releases

Version	Status	Fixed in
trixie	Fixed	`1:8.1.1+ds-1`
sid	Fixed	`1:8.1.1+ds-1`
forky	Fixed	`1:8.1.1+ds-1`
bullseye	Fixed	`0`
bookworm	Fixed	`1:7.2+dfsg-7+deb12u3`

Red Hat Fixed 1 release

Version	Status	Fixed in
9	Fixed	—

Rocky Linux Fixed 1 release

Version	Status	Fixed in
9	Fixed	—

References

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.