CVE-2026-43111 (GCVE-0-2026-43111)
Vulnerability from cvelistv5
Published
2026-05-06 07:40
Modified
2026-08-05 12:25
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
Impacted products
Vendor Product Version
Linux Linux Version: 206f5f2fcb5ff5bb0c60f9e9189937f3ca03e378
Version: 206f5f2fcb5ff5bb0c60f9e9189937f3ca03e378
Version: 206f5f2fcb5ff5bb0c60f9e9189937f3ca03e378
Version: 206f5f2fcb5ff5bb0c60f9e9189937f3ca03e378
Version: 206f5f2fcb5ff5bb0c60f9e9189937f3ca03e378
Version: 206f5f2fcb5ff5bb0c60f9e9189937f3ca03e378
Version: 206f5f2fcb5ff5bb0c60f9e9189937f3ca03e378
Version: 206f5f2fcb5ff5bb0c60f9e9189937f3ca03e378
 Create a notification for this product.
Show details on NVD website

To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/hid/hid-roccat.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "20dca865460f7943cf70afca274b60dac371f546",
              "status": "affected",
              "version": "206f5f2fcb5ff5bb0c60f9e9189937f3ca03e378",
              "versionType": "git"
            },
            {
              "lessThan": "441689e3103694caa3e2d62b7d57c7bccefa5e37",
              "status": "affected",
              "version": "206f5f2fcb5ff5bb0c60f9e9189937f3ca03e378",
              "versionType": "git"
            },
            {
              "lessThan": "181ea51ab0f6370842c5b49cfb86824253a1189e",
              "status": "affected",
              "version": "206f5f2fcb5ff5bb0c60f9e9189937f3ca03e378",
              "versionType": "git"
            },
            {
              "lessThan": "e6a445513fbc6a0329d2d5ff375b6725750ec5a6",
              "status": "affected",
              "version": "206f5f2fcb5ff5bb0c60f9e9189937f3ca03e378",
              "versionType": "git"
            },
            {
              "lessThan": "e16a6d11bd77b81632165f02cf0d5946df74b3b7",
              "status": "affected",
              "version": "206f5f2fcb5ff5bb0c60f9e9189937f3ca03e378",
              "versionType": "git"
            },
            {
              "lessThan": "36bb2d0b915014bbdc5044982b31b57b78045b93",
              "status": "affected",
              "version": "206f5f2fcb5ff5bb0c60f9e9189937f3ca03e378",
              "versionType": "git"
            },
            {
              "lessThan": "bca0b595e15450dd66b1153c76c4ef1087ee011b",
              "status": "affected",
              "version": "206f5f2fcb5ff5bb0c60f9e9189937f3ca03e378",
              "versionType": "git"
            },
            {
              "lessThan": "d802d848308b35220f21a8025352f0c0aba15c12",
              "status": "affected",
              "version": "206f5f2fcb5ff5bb0c60f9e9189937f3ca03e378",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/hid/hid-roccat.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.35"
            },
            {
              "lessThan": "2.6.35",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.258",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.209",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.175",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.136",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.83",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.24",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.19.*",
              "status": "unaffected",
              "version": "6.19.14",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.0",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.258",
                  "versionStartIncluding": "2.6.35",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.209",
                  "versionStartIncluding": "2.6.35",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.175",
                  "versionStartIncluding": "2.6.35",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.136",
                  "versionStartIncluding": "2.6.35",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.83",
                  "versionStartIncluding": "2.6.35",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.24",
                  "versionStartIncluding": "2.6.35",
                  "vulnerable": true
                },
                {
                  "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"
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.