{"id":"CVE-2023-53292","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nblk-mq: fix NULL dereference on q->elevator in blk_mq_elv_switch_none\n\nAfter grabbing q->sysfs_lock, q->elevator may become NULL because of\nelevator switch.\n\nFix the NU…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nblk-mq: fix NULL dereference on q->elevator in blk_mq_elv_switch_none\n\nAfter grabbing q->sysfs_lock, q->elevator may become NULL because of\nelevator switch.\n\nFix the NU…","severity":"medium","cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-476"],"vendor":"linux","product":"linux_kernel","affected":["linux_kernel < 6.4.7"],"patched":["linux_kernel 6.4.7"],"published":"2025-09-16","updated":"2026-09-08","sourceUpdated":"2026-09-08T09:17:16.520","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2023-53292","references":[{"url":"https://git.kernel.org/stable/c/245165658e1c9f95c0fecfe02b9b1ebd30a1198a","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/3e977386521b71471e66ec2ba82efdfcc456adf2","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/988ddb77218d3975dd13dee7bb0e1fae098a9fdb","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-019113.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}],"tags":["nvd","cve.org"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-01-14T18:11:24.787022Z"},"epss":0.00146,"epssPercentile":0.04221,"ingestedAt":"2026-09-08T09:30:06.831Z","slug":"CVE-2023-53292","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nblk-mq: fix NULL dereference on q->elevator in blk_mq_elv_switch_none\n\nAfter grabbing q->sysfs_lock, q->elevator may become NULL because of\nelevator switch.\n\nFix the NULL dereference on q->elevator by checking it with lock.\n\n## Affected\n\n- `linux_kernel < 6.4.7`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `linux_kernel 6.4.7`","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}