Vulnerability-Lookup

FKIE_CVE-2026-43111

Vulnerability from fkie_nvd - Published: 2026-05-06 10:16 - Updated: 2026-06-17 10:48

Severity

7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Summary

In the Linux kernel, the following vulnerability has been resolved: HID: roccat: fix use-after-free in roccat_report_event roccat_report_event() iterates over the device->readers list without holding the readers_lock. This allows a concurrent roccat_release() to remove and free a reader while it's still being accessed, leading to a use-after-free. Protect the readers list traversal with the readers_lock mutex.

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/181ea51ab0f6370842c5b49cfb86824253a1189e
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/20dca865460f7943cf70afca274b60dac371f546
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/36bb2d0b915014bbdc5044982b31b57b78045b93	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/441689e3103694caa3e2d62b7d57c7bccefa5e37
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/bca0b595e15450dd66b1153c76c4ef1087ee011b	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/d802d848308b35220f21a8025352f0c0aba15c12	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/e16a6d11bd77b81632165f02cf0d5946df74b3b7	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/e6a445513fbc6a0329d2d5ff375b6725750ec5a6	Patch

Impacted products

Vendor	Product	Version
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	7.0
linux	linux_kernel	7.0
linux	linux_kernel	7.0
linux	linux_kernel	7.0
linux	linux_kernel	7.0
linux	linux_kernel	7.0
linux	linux_kernel	7.0

JSON

To clipboard

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      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nHID: roccat: fix use-after-free in roccat_report_event\n\nroccat_report_event() iterates over the device-\u003ereaders list without\nholding the readers_lock. This allows a concurrent roccat_release() to\nremove and free a reader while it\u0027s still being accessed, leading to a\nuse-after-free.\n\nProtect the readers list traversal with the readers_lock mutex."
    }
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  "id": "CVE-2026-43111",
  "lastModified": "2026-06-17T10:48:57.367",
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          "attackVector": "LOCAL",
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          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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        "type": "Secondary"
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  "published": "2026-05-06T10:16:24.807",
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      "source": "nvd@nist.gov",
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  ]
}

CVE-2026-43111 (GCVE-0-2026-43111)

Vulnerability from cvelistv5 – Published: 2026-05-06 07:40 – Updated: 2026-08-05 12:25

Title

HID: roccat: fix use-after-free in roccat_report_event

Summary

Severity

7.8 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Assigner

Linux mitre root Scorecard

References

8 references

URL	Tags
https://git.kernel.org/stable/c/20dca865460f7943c…
https://git.kernel.org/stable/c/441689e3103694caa…
https://git.kernel.org/stable/c/181ea51ab0f637084…
https://git.kernel.org/stable/c/e6a445513fbc6a032…
https://git.kernel.org/stable/c/e16a6d11bd77b8163…
https://git.kernel.org/stable/c/36bb2d0b915014bbd…
https://git.kernel.org/stable/c/bca0b595e15450dd6…
https://git.kernel.org/stable/c/d802d848308b35220…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 206f5f2fcb5ff5bb0c60f9e9189937f3ca03e378 , < 20dca865460f7943cf70afca274b60dac371f546 (git) Affected: 206f5f2fcb5ff5bb0c60f9e9189937f3ca03e378 , < 441689e3103694caa3e2d62b7d57c7bccefa5e37 (git) Affected: 206f5f2fcb5ff5bb0c60f9e9189937f3ca03e378 , < 181ea51ab0f6370842c5b49cfb86824253a1189e (git) Affected: 206f5f2fcb5ff5bb0c60f9e9189937f3ca03e378 , < e6a445513fbc6a0329d2d5ff375b6725750ec5a6 (git) Affected: 206f5f2fcb5ff5bb0c60f9e9189937f3ca03e378 , < e16a6d11bd77b81632165f02cf0d5946df74b3b7 (git) Affected: 206f5f2fcb5ff5bb0c60f9e9189937f3ca03e378 , < 36bb2d0b915014bbdc5044982b31b57b78045b93 (git) Affected: 206f5f2fcb5ff5bb0c60f9e9189937f3ca03e378 , < bca0b595e15450dd66b1153c76c4ef1087ee011b (git) Affected: 206f5f2fcb5ff5bb0c60f9e9189937f3ca03e378 , < d802d848308b35220f21a8025352f0c0aba15c12 (git)
Linux	Linux	Affected: 2.6.35 Unaffected: 0 , < 2.6.35 (semver) Unaffected: 5.10.258 , ≤ 5.10.* (semver) Unaffected: 5.15.209 , ≤ 5.15.* (semver) Unaffected: 6.1.175 , ≤ 6.1.* (semver) Unaffected: 6.6.136 , ≤ 6.6.* (semver) Unaffected: 6.12.83 , ≤ 6.12.* (semver) Unaffected: 6.18.24 , ≤ 6.18.* (semver) Unaffected: 6.19.14 , ≤ 6.19.* (semver) Unaffected: 7.0 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

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        {
          "defaultStatus": "unaffected",
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          "programFiles": [
            "drivers/hid/hid-roccat.c"
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                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.19.14",
                  "versionStartIncluding": "2.6.35",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0",
                  "versionStartIncluding": "2.6.35",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nHID: roccat: fix use-after-free in roccat_report_event\n\nroccat_report_event() iterates over the device-\u003ereaders list without\nholding the readers_lock. This allows a concurrent roccat_release() to\nremove and free a reader while it\u0027s still being accessed, leading to a\nuse-after-free.\n\nProtect the readers list traversal with the readers_lock mutex."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - Roccat-specific sysfs/HID event paths feed roccat_report_event(), and exploitation of the vulnerable reader-list race requires local control of /dev/roccat* open/release activity on a system with an affected Roccat USB HID device. There is no network or adjacent protocol path.\nAC:L - The bug is a missing readers_lock around list traversal, and an attacker with device-node access can repeatedly open/close readers while generating reports through the Roccat device/sysfs path. The race is attacker-influenced rather than dependent on rare external conditions.\nPR:L - The relevant roccat char-device operations do not perform capability checks, but the attacker needs local DAC/udev access to the Roccat device/sysfs nodes. In a reasonable desktop or workstation deployment this is low-privileged user access, not real init-namespace root.\nUI:N - Once the affected device and driver are present, exploitation does not require a victim to perform an action. The attacker can drive the racing file operations and report generation directly.\nS:U - The vulnerability corrupts kernel memory within the same kernel security authority. It does not cross a VM, IOMMU, or other separate security scope boundary.\nC:H - This is a kernel use-after-free of struct roccat_reader during list traversal, allowing freed heap memory to be dereferenced after attacker-influenced reallocation. Following the required conservative UAF guidance, this can support high confidentiality impact.\nI:H - The stale reader object is not only read but can have cbuf_start updated and its list pointers traversed after free, giving a plausible kernel heap corruption primitive. Following the required conservative UAF guidance, this supports high integrity impact.\nA:H - Even without full exploitation, dereferencing or walking a freed list element can produce a kernel oops, panic, or hang. Repeated triggering can therefore cause high availability impact."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T12:25:58.562Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/20dca865460f7943cf70afca274b60dac371f546"
        },
        {
          "url": "https://git.kernel.org/stable/c/441689e3103694caa3e2d62b7d57c7bccefa5e37"
        },
        {
          "url": "https://git.kernel.org/stable/c/181ea51ab0f6370842c5b49cfb86824253a1189e"
        },
        {
          "url": "https://git.kernel.org/stable/c/e6a445513fbc6a0329d2d5ff375b6725750ec5a6"
        },
        {
          "url": "https://git.kernel.org/stable/c/e16a6d11bd77b81632165f02cf0d5946df74b3b7"
        },
        {
          "url": "https://git.kernel.org/stable/c/36bb2d0b915014bbdc5044982b31b57b78045b93"
        },
        {
          "url": "https://git.kernel.org/stable/c/bca0b595e15450dd66b1153c76c4ef1087ee011b"
        },
        {
          "url": "https://git.kernel.org/stable/c/d802d848308b35220f21a8025352f0c0aba15c12"
        }
      ],
      "title": "HID: roccat: fix use-after-free in roccat_report_event",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-43111",
    "datePublished": "2026-05-06T07:40:37.916Z",
    "dateReserved": "2026-05-01T14:12:55.986Z",
    "dateUpdated": "2026-08-05T12:25:58.562Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

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Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

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.
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FKIE_CVE-2026-43111

CVE-2026-43111 (GCVE-0-2026-43111)

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