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CVE-2022-50552 (GCVE-0-2022-50552)

Vulnerability from cvelistv5 – Published: 2025-10-07 15:21 – Updated: 2026-06-01 16:04
VLAI
Title
blk-mq: use quiesced elevator switch when reinitializing queues
Summary
In the Linux kernel, the following vulnerability has been resolved: blk-mq: use quiesced elevator switch when reinitializing queues The hctx's run_work may be racing with the elevator switch when reinitializing hardware queues. The queue is merely frozen in this context, but that only prevents requests from allocating and doesn't stop the hctx work from running. The work may get an elevator pointer that's being torn down, and can result in use-after-free errors and kernel panics (example below). Use the quiesced elevator switch instead, and make the previous one static since it is now only used locally. nvme nvme0: resetting controller nvme nvme0: 32/0/0 default/read/poll queues BUG: kernel NULL pointer dereference, address: 0000000000000008 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 80000020c8861067 P4D 80000020c8861067 PUD 250f8c8067 PMD 0 Oops: 0000 [#1] SMP PTI Workqueue: kblockd blk_mq_run_work_fn RIP: 0010:kyber_has_work+0x29/0x70 ... Call Trace: __blk_mq_do_dispatch_sched+0x83/0x2b0 __blk_mq_sched_dispatch_requests+0x12e/0x170 blk_mq_sched_dispatch_requests+0x30/0x60 __blk_mq_run_hw_queue+0x2b/0x50 process_one_work+0x1ef/0x380 worker_thread+0x2d/0x3e0
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: d48ece209f82c9ce07be942441b53d3fa3664936 , < 0f90015383cd3f1128bebfbe7a97122d97808046 (git)
Affected: d48ece209f82c9ce07be942441b53d3fa3664936 , < 9646443f28f33ec545ae303e613c3f476fad4dc1 (git)
Affected: d48ece209f82c9ce07be942441b53d3fa3664936 , < 63a681bcc32a43528ce0f690569f7f48e59c3963 (git)
Affected: d48ece209f82c9ce07be942441b53d3fa3664936 , < c478b3b2900f1834cf9eda5bfef0d5696099505d (git)
Affected: d48ece209f82c9ce07be942441b53d3fa3664936 , < 8237c01f1696bc53c470493bf1fe092a107648a6 (git)
guessed Create a notification for this product.
Linux Linux Affected: 4.19
Unaffected: 0 , < 4.19 (semver)
Unaffected: 5.10.258 , ≤ 5.10.* (semver)
Unaffected: 5.15.209 , ≤ 5.15.* (semver)
Unaffected: 5.19.17 , ≤ 5.19.* (semver)
Unaffected: 6.0.3 , ≤ 6.0.* (semver)
Unaffected: 6.1 , ≤ * (original_commit_for_fix)
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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-29T21:54:27+00:00",
      "cve": "CVE-2022-50552",
      "id": "CVE-2022-50552",
      "initial_release_date": "2022-01-01T00:00:00+00:00",
      "product_status:known_affected": "184",
      "product_status:known_not_affected": "90",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: blk-mq: use quiesced elevator switch when reinitializing queues",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-50552.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-08-31T01:22:33Z",
      "cve": "CVE-2022-50552",
      "id": "CVE-2022-50552",
      "initial_release_date": "2025-10-08T23:38:41Z",
      "product_status:known_affected": "121",
      "product_status:known_not_affected": "145",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2022-50552",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2022-50552.json",
      "version": "20"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.