CVE-2026-64427 (GCVE-0-2026-64427)

Vulnerability from cvelistv5 – Published: 2026-07-25 08:51 – Updated: 2026-08-19 16:28
VLAI
Title
HID: logitech-dj: Fix maxfield check in DJ short report validation
Summary
In the Linux kernel, the following vulnerability has been resolved: HID: logitech-dj: Fix maxfield check in DJ short report validation Commit b6a57912854e ("HID: logitech-dj: Prevent REPORT_ID_DJ_SHORT related user initiated OOB write") added validation for the DJ short output report, but the error path dereferences rep->field[0] even when rep->maxfield is zero. Commit 8b9a097eb2fc ("HID: logitech-dj: fix wrong detection of bad DJ_SHORT output report") made the check conditional on rep being present, but a crafted descriptor can still create report ID 0x20 with only padding output items. hid-core registers the report, ignores the padding field, and leaves rep->maxfield as zero. In that case the validation enters the rep->maxfield < 1 branch and then dereferences rep->field[0]->report_count while printing the error message, causing a NULL pointer dereference during probe. This is reproducible with uhid by emulating a Logitech receiver with a padding-only DJ short output report: BUG: KASAN: null-ptr-deref in logi_dj_probe+0xb1/0x754 [hid_logitech_dj] Read of size 4 at addr 0000000000000028 by task kworker/4:1/129 ... Call Trace: logi_dj_probe+0xb1/0x754 [hid_logitech_dj] hid_device_probe+0x329/0x3f0 [hid] really_probe+0x162/0x570 __device_attach+0x137/0x2c0 bus_probe_device+0x38/0xc0 device_add+0xa56/0xce0 hid_add_device+0x19c/0x280 [hid] uhid_device_add_worker+0x2c/0xb0 [uhid] Reject the zero-field report before printing the field report_count.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 7754ade02d0fb1caf20392baf4e02937378fd136 , < f3790a6af9c7f47d454225cab9dc145270e48f62 (git)
Affected: 2ed9638cfbf9d49bdef9b0f5ee547236c2c2f500 , < 1215febd644c3e16f77e0f1799d89544dd57a754 (git)
Affected: eeb5ad388595ca2b6624689198a057847f3a3e19 , < 6f7f22a8d244c2e586b8eb61c7585784b62aea01 (git)
Affected: 968e84f5c0dca4960580d174500e4bbf0c45dc15 , < 95b3f23d632490b5eb285b9fcf7284f2ac8f9872 (git)
Affected: ce2a731c179df8869e1969a1b2b5b9e4e1c25f8b , < 80c1e18473f63fd7c6a2bc9ad6f3d0a6cc4fb500 (git)
Affected: bc3bba4656ad280267ea78cf845ab6b1d95b9fcd , < 2b70bebc709489d29a31ac2935aeffb8d5228395 (git)
Affected: b6a57912854e7ea36f3b270032661140cc4209cd , < 7a89ad762fad53d56b7002d7ffc923a4b7f4006f (git)
Affected: b6a57912854e7ea36f3b270032661140cc4209cd , < 590cc4d782487632a52f37c2171bee1eeea29627 (git)
guessed Create a notification for this product.
Linux Linux Affected: 7.1
Unaffected: 0 , < 7.1 (semver)
Unaffected: 7.1.4 , ≤ 7.1.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/hid/hid-logitech-dj.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "f3790a6af9c7f47d454225cab9dc145270e48f62",
              "status": "affected",
              "version": "7754ade02d0fb1caf20392baf4e02937378fd136",
              "versionType": "git"
            },
            {
              "lessThan": "1215febd644c3e16f77e0f1799d89544dd57a754",
              "status": "affected",
              "version": "2ed9638cfbf9d49bdef9b0f5ee547236c2c2f500",
              "versionType": "git"
            },
            {
              "lessThan": "6f7f22a8d244c2e586b8eb61c7585784b62aea01",
              "status": "affected",
              "version": "eeb5ad388595ca2b6624689198a057847f3a3e19",
              "versionType": "git"
            },
            {
              "lessThan": "95b3f23d632490b5eb285b9fcf7284f2ac8f9872",
              "status": "affected",
              "version": "968e84f5c0dca4960580d174500e4bbf0c45dc15",
              "versionType": "git"
            },
            {
              "lessThan": "80c1e18473f63fd7c6a2bc9ad6f3d0a6cc4fb500",
              "status": "affected",
              "version": "ce2a731c179df8869e1969a1b2b5b9e4e1c25f8b",
              "versionType": "git"
            },
            {
              "lessThan": "2b70bebc709489d29a31ac2935aeffb8d5228395",
              "status": "affected",
              "version": "bc3bba4656ad280267ea78cf845ab6b1d95b9fcd",
              "versionType": "git"
            },
            {
              "lessThan": "7a89ad762fad53d56b7002d7ffc923a4b7f4006f",
              "status": "affected",
              "version": "b6a57912854e7ea36f3b270032661140cc4209cd",
              "versionType": "git"
            },
            {
              "lessThan": "590cc4d782487632a52f37c2171bee1eeea29627",
              "status": "affected",
              "version": "b6a57912854e7ea36f3b270032661140cc4209cd",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/hid/hid-logitech-dj.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "7.1"
            },
            {
              "lessThan": "7.1",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1.4",
                  "versionStartIncluding": "7.1",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2",
                  "versionStartIncluding": "7.1",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nHID: logitech-dj: Fix maxfield check in DJ short report validation\n\nCommit b6a57912854e (\"HID: logitech-dj: Prevent REPORT_ID_DJ_SHORT\nrelated user initiated OOB write\") added validation for the DJ short\noutput report, but the error path dereferences rep-\u003efield[0] even when\nrep-\u003emaxfield is zero.\n\nCommit 8b9a097eb2fc (\"HID: logitech-dj: fix wrong detection of bad\nDJ_SHORT output report\") made the check conditional on rep being present,\nbut a crafted descriptor can still create report ID 0x20 with only padding\noutput items. hid-core registers the report, ignores the padding field,\nand leaves rep-\u003emaxfield as zero.\n\nIn that case the validation enters the rep-\u003emaxfield \u003c 1 branch and then\ndereferences rep-\u003efield[0]-\u003ereport_count while printing the error message,\ncausing a NULL pointer dereference during probe. This is reproducible with\nuhid by emulating a Logitech receiver with a padding-only DJ short output\nreport:\n\n  BUG: KASAN: null-ptr-deref in logi_dj_probe+0xb1/0x754 [hid_logitech_dj]\n  Read of size 4 at addr 0000000000000028 by task kworker/4:1/129\n  ...\n  Call Trace:\n   logi_dj_probe+0xb1/0x754 [hid_logitech_dj]\n   hid_device_probe+0x329/0x3f0 [hid]\n   really_probe+0x162/0x570\n   __device_attach+0x137/0x2c0\n   bus_probe_device+0x38/0xc0\n   device_add+0xa56/0xce0\n   hid_add_device+0x19c/0x280 [hid]\n   uhid_device_add_worker+0x2c/0xb0 [uhid]\n\nReject the zero-field report before printing the field report_count."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-19T16:28:13.596Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/f3790a6af9c7f47d454225cab9dc145270e48f62"
        },
        {
          "url": "https://git.kernel.org/stable/c/1215febd644c3e16f77e0f1799d89544dd57a754"
        },
        {
          "url": "https://git.kernel.org/stable/c/6f7f22a8d244c2e586b8eb61c7585784b62aea01"
        },
        {
          "url": "https://git.kernel.org/stable/c/95b3f23d632490b5eb285b9fcf7284f2ac8f9872"
        },
        {
          "url": "https://git.kernel.org/stable/c/80c1e18473f63fd7c6a2bc9ad6f3d0a6cc4fb500"
        },
        {
          "url": "https://git.kernel.org/stable/c/2b70bebc709489d29a31ac2935aeffb8d5228395"
        },
        {
          "url": "https://git.kernel.org/stable/c/7a89ad762fad53d56b7002d7ffc923a4b7f4006f"
        },
        {
          "url": "https://git.kernel.org/stable/c/590cc4d782487632a52f37c2171bee1eeea29627"
        }
      ],
      "title": "HID: logitech-dj: Fix maxfield check in DJ short report validation",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-64427",
    "datePublished": "2026-07-25T08:51:04.686Z",
    "dateReserved": "2026-07-19T15:36:31.787Z",
    "dateUpdated": "2026-08-19T16:28:13.596Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-64427",
      "date": "2026-09-23",
      "epss": "0.00123",
      "percentile": "0.02326"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "defaultStatus": "unaffected",
                "product": "Linux",
                "programFiles": [
                  "drivers/hid/hid-logitech-dj.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "lessThan": "f3790a6af9c7f47d454225cab9dc145270e48f62",
                    "status": "affected",
                    "version": "7754ade02d0fb1caf20392baf4e02937378fd136",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "1215febd644c3e16f77e0f1799d89544dd57a754",
                    "status": "affected",
                    "version": "2ed9638cfbf9d49bdef9b0f5ee547236c2c2f500",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "6f7f22a8d244c2e586b8eb61c7585784b62aea01",
                    "status": "affected",
                    "version": "eeb5ad388595ca2b6624689198a057847f3a3e19",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "95b3f23d632490b5eb285b9fcf7284f2ac8f9872",
                    "status": "affected",
                    "version": "968e84f5c0dca4960580d174500e4bbf0c45dc15",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "80c1e18473f63fd7c6a2bc9ad6f3d0a6cc4fb500",
                    "status": "affected",
                    "version": "ce2a731c179df8869e1969a1b2b5b9e4e1c25f8b",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "2b70bebc709489d29a31ac2935aeffb8d5228395",
                    "status": "affected",
                    "version": "bc3bba4656ad280267ea78cf845ab6b1d95b9fcd",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "7a89ad762fad53d56b7002d7ffc923a4b7f4006f",
                    "status": "affected",
                    "version": "b6a57912854e7ea36f3b270032661140cc4209cd",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "590cc4d782487632a52f37c2171bee1eeea29627",
                    "status": "affected",
                    "version": "b6a57912854e7ea36f3b270032661140cc4209cd",
                    "versionType": "git"
                  }
                ]
              },
              {
                "defaultStatus": "affected",
                "product": "Linux",
                "programFiles": [
                  "drivers/hid/hid-logitech-dj.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "status": "affected",
                    "version": "7.1"
                  },
                  {
                    "lessThan": "7.1",
                    "status": "unaffected",
                    "version": "0",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "7.1.*",
                    "status": "unaffected",
                    "version": "7.1.4",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "*",
                    "status": "unaffected",
                    "version": "7.2",
                    "versionType": "original_commit_for_fix"
                  }
                ]
              }
            ],
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
          }
        ],
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "7D22B17B-4F96-43BE-835F-3A80228838B0",
                    "versionEndExcluding": "7.1.4",
                    "versionStartIncluding": "7.1",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:7.2:rc1:*:*:*:*:*:*",
                    "matchCriteriaId": "5E8B9085-7ADB-4A05-89EF-12949B6A0509",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:7.2:rc2:*:*:*:*:*:*",
                    "matchCriteriaId": "1FC0D50D-9D58-4947-A197-A5A3FF07E7E3",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nHID: logitech-dj: Fix maxfield check in DJ short report validation\n\nCommit b6a57912854e (\"HID: logitech-dj: Prevent REPORT_ID_DJ_SHORT\nrelated user initiated OOB write\") added validation for the DJ short\noutput report, but the error path dereferences rep-\u003efield[0] even when\nrep-\u003emaxfield is zero.\n\nCommit 8b9a097eb2fc (\"HID: logitech-dj: fix wrong detection of bad\nDJ_SHORT output report\") made the check conditional on rep being present,\nbut a crafted descriptor can still create report ID 0x20 with only padding\noutput items. hid-core registers the report, ignores the padding field,\nand leaves rep-\u003emaxfield as zero.\n\nIn that case the validation enters the rep-\u003emaxfield \u003c 1 branch and then\ndereferences rep-\u003efield[0]-\u003ereport_count while printing the error message,\ncausing a NULL pointer dereference during probe. This is reproducible with\nuhid by emulating a Logitech receiver with a padding-only DJ short output\nreport:\n\n  BUG: KASAN: null-ptr-deref in logi_dj_probe+0xb1/0x754 [hid_logitech_dj]\n  Read of size 4 at addr 0000000000000028 by task kworker/4:1/129\n  ...\n  Call Trace:\n   logi_dj_probe+0xb1/0x754 [hid_logitech_dj]\n   hid_device_probe+0x329/0x3f0 [hid]\n   really_probe+0x162/0x570\n   __device_attach+0x137/0x2c0\n   bus_probe_device+0x38/0xc0\n   device_add+0xa56/0xce0\n   hid_add_device+0x19c/0x280 [hid]\n   uhid_device_add_worker+0x2c/0xb0 [uhid]\n\nReject the zero-field report before printing the field report_count."
          }
        ],
        "id": "CVE-2026-64427",
        "lastModified": "2026-09-04T14:58:49.367",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 5.5,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 1.8,
              "impactScore": 3.6,
              "source": "nvd@nist.gov",
              "type": "Primary"
            }
          ]
        },
        "published": "2026-07-25T10:17:26.843",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/1215febd644c3e16f77e0f1799d89544dd57a754"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/2b70bebc709489d29a31ac2935aeffb8d5228395"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/590cc4d782487632a52f37c2171bee1eeea29627"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/6f7f22a8d244c2e586b8eb61c7585784b62aea01"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/7a89ad762fad53d56b7002d7ffc923a4b7f4006f"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/80c1e18473f63fd7c6a2bc9ad6f3d0a6cc4fb500"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/95b3f23d632490b5eb285b9fcf7284f2ac8f9872"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/f3790a6af9c7f47d454225cab9dc145270e48f62"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Analyzed",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-476"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "None",
      "current_release_date": "2026-07-28T03:00:11+00:00",
      "cve": "CVE-2026-64427",
      "id": "CVE-2026-64427",
      "initial_release_date": "2026-07-25T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: HID: logitech-dj: Fix maxfield check in DJ short report validation",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-64427.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-22T16:53:48Z",
      "cve": "CVE-2026-64427",
      "id": "CVE-2026-64427",
      "initial_release_date": "2026-07-25T15:59:33Z",
      "product_status:first_fixed": "60",
      "product_status:known_affected": "394",
      "product_status:known_not_affected": "339",
      "product_status:recommended": "111",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-64427",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-64427.json",
      "version": "11"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





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

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.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.