Vulnerability-Lookup

GHSA-C7VQ-J3HM-M6QQ

Vulnerability from github – Published: 2026-09-17 18:32 – Updated: 2026-09-17 18:32

Details

In the Linux kernel, the following vulnerability has been resolved:

HID: core: quiesce input in hid_hw_stop() to prevent use-after-free

A driver's probe calls hid_device_io_start() to enable input delivery, then fails at a later initialization step and unwinds via hid_hw_stop(). The unwind frees struct hidraw via hidraw_disconnect() while in-flight HID reports may still be running on another CPU, dereferencing the freed object through hidraw_report_event(). syzbot reports the resulting use-after-free for the corsair-psu HID driver.

Edward Adam Davis posted a per-driver fix for corsair-psu that adds an explicit hid_device_io_stop() before hid_hw_stop() in the probe error path ("hwmon: prevent packets from going to driver for probe", 2026-04-28). Auditing the tree shows 15 drivers call hid_device_io_start(); 7 also call hid_device_io_stop() and 8 do not:

drivers calling hid_device_io_start() without a matching hid_device_io_stop() before hid_hw_stop(): drivers/hwmon/corsair-psu.c (fix posted by Edward) drivers/hwmon/corsair-cpro.c drivers/hwmon/nzxt-kraken3.c drivers/hwmon/nzxt-smart2.c drivers/hwmon/gigabyte_waterforce.c drivers/hid/hid-logitech-dj.c drivers/hid/hid-nintendo.c drivers/hid/hid-mcp2221.c

Roughly half of all callers of the API are exposed. Centralize the quiesce in hid_hw_stop() so callers do not have to remember the matching stop: if a driver has left hdev->io_started true on entry, call hid_device_io_stop() before hid_disconnect().

For the 7 drivers that already call hid_device_io_stop() correctly, hdev->io_started is false on entry, the guard short-circuits, and behavior is unchanged.

No Fixes: tag because the affected drivers gained their hid_device_io_start() calls independently over years; the bug is a class-wide API misuse rather than a regression from one commit.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-93189"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-17T17:18:15Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nHID: core: quiesce input in hid_hw_stop() to prevent use-after-free\n\nA driver\u0027s probe calls hid_device_io_start() to enable input delivery,\nthen fails at a later initialization step and unwinds via hid_hw_stop().\nThe unwind frees struct hidraw via hidraw_disconnect() while in-flight\nHID reports may still be running on another CPU, dereferencing the\nfreed object through hidraw_report_event(). syzbot reports the\nresulting use-after-free for the corsair-psu HID driver.\n\nEdward Adam Davis posted a per-driver fix for corsair-psu that adds\nan explicit hid_device_io_stop() before hid_hw_stop() in the probe\nerror path (\"hwmon: prevent packets from going to driver for probe\",\n2026-04-28). Auditing the tree shows 15 drivers call\nhid_device_io_start(); 7 also call hid_device_io_stop() and 8 do not:\n\n  drivers calling hid_device_io_start() without a matching\n  hid_device_io_stop() before hid_hw_stop():\n    drivers/hwmon/corsair-psu.c       (fix posted by Edward)\n    drivers/hwmon/corsair-cpro.c\n    drivers/hwmon/nzxt-kraken3.c\n    drivers/hwmon/nzxt-smart2.c\n    drivers/hwmon/gigabyte_waterforce.c\n    drivers/hid/hid-logitech-dj.c\n    drivers/hid/hid-nintendo.c\n    drivers/hid/hid-mcp2221.c\n\nRoughly half of all callers of the API are exposed. Centralize the\nquiesce in hid_hw_stop() so callers do not have to remember the\nmatching stop: if a driver has left hdev-\u003eio_started true on entry,\ncall hid_device_io_stop() before hid_disconnect().\n\nFor the 7 drivers that already call hid_device_io_stop() correctly,\nhdev-\u003eio_started is false on entry, the guard short-circuits, and\nbehavior is unchanged.\n\nNo Fixes: tag because the affected drivers gained their\nhid_device_io_start() calls independently over years; the bug is a\nclass-wide API misuse rather than a regression from one commit.",
  "id": "GHSA-c7vq-j3hm-m6qq",
  "modified": "2026-09-17T18:32:14Z",
  "published": "2026-09-17T18:32:13Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-93189"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/02246d8b462fd9bd90bc7ae7d6cab1acf69bcb87"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0744cb9520aade37e78f69134f3111086158f1d2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0fecd89f979a8653b9a5b0816570329b7a94a081"
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    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/544ebb25bd58f67e821573412ab7a982b9e02211"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6787f1828f5616f17250e108c0031fb96fd2cfe6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/92cca302a4eaf65d1b38b3fb600b4ee5eb856a51"
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    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a4bc41504690b7d7064931909874f5b98cd148b6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c876c437d188911685d8bed645416f2e86bd0354"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-93189 (GCVE-0-2026-93189)

Vulnerability from cvelistv5 – Published: 2026-09-17 16:12 – Updated: 2026-09-17 16:12

Title

HID: core: quiesce input in hid_hw_stop() to prevent use-after-free

Summary

In the Linux kernel, the following vulnerability has been resolved: HID: core: quiesce input in hid_hw_stop() to prevent use-after-free A driver's probe calls hid_device_io_start() to enable input delivery, then fails at a later initialization step and unwinds via hid_hw_stop(). The unwind frees struct hidraw via hidraw_disconnect() while in-flight HID reports may still be running on another CPU, dereferencing the freed object through hidraw_report_event(). syzbot reports the resulting use-after-free for the corsair-psu HID driver. Edward Adam Davis posted a per-driver fix for corsair-psu that adds an explicit hid_device_io_stop() before hid_hw_stop() in the probe error path ("hwmon: prevent packets from going to driver for probe", 2026-04-28). Auditing the tree shows 15 drivers call hid_device_io_start(); 7 also call hid_device_io_stop() and 8 do not: drivers calling hid_device_io_start() without a matching hid_device_io_stop() before hid_hw_stop(): drivers/hwmon/corsair-psu.c (fix posted by Edward) drivers/hwmon/corsair-cpro.c drivers/hwmon/nzxt-kraken3.c drivers/hwmon/nzxt-smart2.c drivers/hwmon/gigabyte_waterforce.c drivers/hid/hid-logitech-dj.c drivers/hid/hid-nintendo.c drivers/hid/hid-mcp2221.c Roughly half of all callers of the API are exposed. Centralize the quiesce in hid_hw_stop() so callers do not have to remember the matching stop: if a driver has left hdev->io_started true on entry, call hid_device_io_stop() before hid_disconnect(). For the 7 drivers that already call hid_device_io_stop() correctly, hdev->io_started is false on entry, the guard short-circuits, and behavior is unchanged. No Fixes: tag because the affected drivers gained their hid_device_io_start() calls independently over years; the bug is a class-wide API misuse rather than a regression from one commit.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

8 references

URL	Tags
https://git.kernel.org/stable/c/0744cb9520aade37e…
https://git.kernel.org/stable/c/c876c437d18891168…
https://git.kernel.org/stable/c/6787f1828f5616f17…
https://git.kernel.org/stable/c/92cca302a4eaf65d1…
https://git.kernel.org/stable/c/02246d8b462fd9bd9…
https://git.kernel.org/stable/c/544ebb25bd58f67e8…
https://git.kernel.org/stable/c/0fecd89f979a8653b…
https://git.kernel.org/stable/c/a4bc41504690b7d70…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 0744cb9520aade37e78f69134f3111086158f1d2 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < c876c437d188911685d8bed645416f2e86bd0354 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 6787f1828f5616f17250e108c0031fb96fd2cfe6 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 92cca302a4eaf65d1b38b3fb600b4ee5eb856a51 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 02246d8b462fd9bd90bc7ae7d6cab1acf69bcb87 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 544ebb25bd58f67e821573412ab7a982b9e02211 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 0fecd89f979a8653b9a5b0816570329b7a94a081 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < a4bc41504690b7d7064931909874f5b98cd148b6 (git) Affected: 0 , < 5.10.270 (semver) Affected: 0 , < 5.15.221 (semver) Affected: 0 , < 6.1.188 (semver) Affected: 0 , < 6.6.157 (semver) Affected: 0 , < 6.12.110 (semver) Affected: 0 , < 6.18.52 (semver) Affected: 0 , < 7.2.6 (semver)
Linux	Linux	Unaffected: 5.10.270 , ≤ 5.10.* (semver) Unaffected: 5.15.221 , ≤ 5.15.* (semver) Unaffected: 6.1.188 , ≤ 6.1.* (semver) Unaffected: 6.6.157 , ≤ 6.6.* (semver) Unaffected: 6.12.110 , ≤ 6.12.* (semver) Unaffected: 6.18.52 , ≤ 6.18.* (semver) Unaffected: 7.2.6 , ≤ 7.2.* (semver) Unaffected: 7.3-rc1 , ≤ * (original_commit_for_fix)

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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nHID: core: quiesce input in hid_hw_stop() to prevent use-after-free\n\nA driver\u0027s probe calls hid_device_io_start() to enable input delivery,\nthen fails at a later initialization step and unwinds via hid_hw_stop().\nThe unwind frees struct hidraw via hidraw_disconnect() while in-flight\nHID reports may still be running on another CPU, dereferencing the\nfreed object through hidraw_report_event(). syzbot reports the\nresulting use-after-free for the corsair-psu HID driver.\n\nEdward Adam Davis posted a per-driver fix for corsair-psu that adds\nan explicit hid_device_io_stop() before hid_hw_stop() in the probe\nerror path (\"hwmon: prevent packets from going to driver for probe\",\n2026-04-28). Auditing the tree shows 15 drivers call\nhid_device_io_start(); 7 also call hid_device_io_stop() and 8 do not:\n\n  drivers calling hid_device_io_start() without a matching\n  hid_device_io_stop() before hid_hw_stop():\n    drivers/hwmon/corsair-psu.c       (fix posted by Edward)\n    drivers/hwmon/corsair-cpro.c\n    drivers/hwmon/nzxt-kraken3.c\n    drivers/hwmon/nzxt-smart2.c\n    drivers/hwmon/gigabyte_waterforce.c\n    drivers/hid/hid-logitech-dj.c\n    drivers/hid/hid-nintendo.c\n    drivers/hid/hid-mcp2221.c\n\nRoughly half of all callers of the API are exposed. Centralize the\nquiesce in hid_hw_stop() so callers do not have to remember the\nmatching stop: if a driver has left hdev-\u003eio_started true on entry,\ncall hid_device_io_stop() before hid_disconnect().\n\nFor the 7 drivers that already call hid_device_io_stop() correctly,\nhdev-\u003eio_started is false on entry, the guard short-circuits, and\nbehavior is unchanged.\n\nNo Fixes: tag because the affected drivers gained their\nhid_device_io_start() calls independently over years; the bug is a\nclass-wide API misuse rather than a regression from one commit."
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          "url": "https://git.kernel.org/stable/c/a4bc41504690b7d7064931909874f5b98cd148b6"
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}

Sightings

Author	Source	Type	Date	Other

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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