{"id":"CVE-2023-53609","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: Revert \"scsi: core: Do not increase scsi_device's iorequest_cnt if dispatch failed\"\n\nThe \"atomic_inc(&cmd->device->iorequest_cnt)\" in scsi_queue_rq() would\ncause …","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: Revert \"scsi: core: Do not increase scsi_device's iorequest_cnt if dispatch failed\"\n\nThe \"atomic_inc(&cmd->device->iorequest_cnt)\" in scsi_queue_rq() would\ncause …","severity":"high","cvss":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","vendor":"linux","product":"linux_kernel","affected":["linux_kernel >= 6.2, < 6.3.4","linux_kernel = 6.4"],"patched":["linux_kernel 6.3.4"],"published":"2025-10-04","updated":"2026-10-15","sourceUpdated":"2026-10-15T22:17:44.233","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2023-53609","references":[{"url":"https://git.kernel.org/stable/c/35fe6fa57b994e7da222893adf0bb748d6055e73","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/6ca9818d1624e136a76ae8faedb6b6c95ca66903","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"epss":0.00137,"epssPercentile":0.03105,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-10-15T21:35:54.558433Z"},"ingestedAt":"2026-10-15T22:48:25.412Z","slug":"CVE-2023-53609","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nscsi: Revert \"scsi: core: Do not increase scsi_device's iorequest_cnt if dispatch failed\"\n\nThe \"atomic_inc(&cmd->device->iorequest_cnt)\" in scsi_queue_rq() would\ncause kernel panic because cmd->device may be freed after returning from\nscsi_dispatch_cmd().\n\nThis reverts commit cfee29ffb45b1c9798011b19d454637d1b0fe87d.\n\n## Affected\n\n- `linux_kernel >= 6.2, < 6.3.4`\n- `linux_kernel = 6.4`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `linux_kernel 6.3.4`","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}