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CVE-2023-53292 blk-mq: fix NULL dereference on q->elevator in blk_mq_elv_switch_none

🗓️ 16 Sep 2025 08:11:24Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 4 Views

Fixed NULL dereference of q->elevator in blk_mq_elv_switch_none after acquiring q->sysfs_lock.

Related
Affected
Refs
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "block/blk-mq.c"
    ],
    "versions": [
      {
        "version": "5fd7a84a09e640016fe106dd3e992f5210e23dc7",
        "lessThan": "988ddb77218d3975dd13dee7bb0e1fae098a9fdb",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "5fd7a84a09e640016fe106dd3e992f5210e23dc7",
        "lessThan": "3e977386521b71471e66ec2ba82efdfcc456adf2",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "5fd7a84a09e640016fe106dd3e992f5210e23dc7",
        "lessThan": "245165658e1c9f95c0fecfe02b9b1ebd30a1198a",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "block/blk-mq.c"
    ],
    "versions": [
      {
        "version": "5.19",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "5.19",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.1.175",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.4.7",
        "lessThanOrEqual": "6.4.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.5",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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