What is CVE-2023-53609?

CVE-2023-53609 is a high-severity vulnerability in Linux. CVSS score: 7.8/10. Published 2025-10-04.

How severe is CVE-2023-53609?

High severity. CVSS v3 base score is 7.8 out of 10.

Is CVE-2023-53609 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Linux

CVE-2023-53609

In the Linux kernel, the following vulnerability has been resolved: scsi: Revert "scsi: core: Do not increase scsi_device's iorequest_cnt if dispatch failed" The "atomic_inc(&cmd->device->iorequest_cnt)" in scsi_queue_rq() would cause kernel panic because cmd->device may be freed after returning from scsi_dispatch_cmd(). This reverts commit cfee29ffb45b1c9798011b19d454637d1b0fe87d.

EPSS: 0.001 (2.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Linux — versions cfee29ffb45b1c9798011b19d454637d1b0fe87d, 6.2, 0
Linux Linux_kernel — versions 6.4

Public proof-of-concept exploits

fkie-cad/nvd-json-data-feeds

References

416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)

Frequently asked questions

What is CVE-2023-53609?: CVE-2023-53609 is a high-severity vulnerability in Linux. CVSS score: 7.8/10. Published 2025-10-04.
How severe is CVE-2023-53609?: High severity. CVSS v3 base score is 7.8 out of 10.
Is CVE-2023-53609 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.