GCVE Workshop - 22 September 2026 (14:00-18:00), Luxembourg Before The Vulnopticon Conference - Registration

CVE-2021-4460 (GCVE-0-2021-4460)

Vulnerability from cvelistv5 – Published: 2025-10-01 11:45 – Updated: 2026-08-11 02:05
VLAI
Title
drm/amdkfd: Fix UBSAN shift-out-of-bounds warning
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: Fix UBSAN shift-out-of-bounds warning If get_num_sdma_queues or get_num_xgmi_sdma_queues is 0, we end up doing a shift operation where the number of bits shifted equals number of bits in the operand. This behaviour is undefined. Set num_sdma_queues or num_xgmi_sdma_queues to ULLONG_MAX, if the count is >= number of bits in the operand. Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/1472
Severity
7.1 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-01-14 17:39 UTC
CWE
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 35cdc81bfa94d10373ecae279f3c48ca858ac4fd , < 0c0356ef2498c1a250fe3846f30293f828737309 (git)
Affected: 35cdc81bfa94d10373ecae279f3c48ca858ac4fd , < 1874b0ef1426b873de94c61861e38f29a8df714c (git)
Affected: 35cdc81bfa94d10373ecae279f3c48ca858ac4fd , < 3fdc5182700910a685d23df57d65166e8556a266 (git)
Affected: 35cdc81bfa94d10373ecae279f3c48ca858ac4fd , < 9069b1b542de8f3bbffef868aff41521b21485cf (git)
Affected: 35cdc81bfa94d10373ecae279f3c48ca858ac4fd , < 50e2fc36e72d4ad672032ebf646cecb48656efe0 (git)
guessed Create a notification for this product.
Linux Linux Affected: 5.4
Unaffected: 0 , < 5.4 (semver)
Unaffected: 5.4.118 , ≤ 5.4.* (semver)
Unaffected: 5.10.36 , ≤ 5.10.* (semver)
Unaffected: 5.11.20 , ≤ 5.11.* (semver)
Unaffected: 5.12.3 , ≤ 5.12.* (semver)
Unaffected: 5.13 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "LOCAL",
              "availabilityImpact": "HIGH",
              "baseScore": 7.1,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "NONE",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2021-4460",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-01-14T17:39:30.831800Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-125",
                "description": "CWE-125 Out-of-bounds Read",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-01-14T17:42:45.892Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "0c0356ef2498c1a250fe3846f30293f828737309",
              "status": "affected",
              "version": "35cdc81bfa94d10373ecae279f3c48ca858ac4fd",
              "versionType": "git"
            },
            {
              "lessThan": "1874b0ef1426b873de94c61861e38f29a8df714c",
              "status": "affected",
              "version": "35cdc81bfa94d10373ecae279f3c48ca858ac4fd",
              "versionType": "git"
            },
            {
              "lessThan": "3fdc5182700910a685d23df57d65166e8556a266",
              "status": "affected",
              "version": "35cdc81bfa94d10373ecae279f3c48ca858ac4fd",
              "versionType": "git"
            },
            {
              "lessThan": "9069b1b542de8f3bbffef868aff41521b21485cf",
              "status": "affected",
              "version": "35cdc81bfa94d10373ecae279f3c48ca858ac4fd",
              "versionType": "git"
            },
            {
              "lessThan": "50e2fc36e72d4ad672032ebf646cecb48656efe0",
              "status": "affected",
              "version": "35cdc81bfa94d10373ecae279f3c48ca858ac4fd",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.4"
            },
            {
              "lessThan": "5.4",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.118",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.36",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.11.*",
              "status": "unaffected",
              "version": "5.11.20",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.12.*",
              "status": "unaffected",
              "version": "5.12.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "5.13",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.4.118",
                  "versionStartIncluding": "5.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.36",
                  "versionStartIncluding": "5.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.11.20",
                  "versionStartIncluding": "5.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.12.3",
                  "versionStartIncluding": "5.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.13",
                  "versionStartIncluding": "5.4",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdkfd: Fix UBSAN shift-out-of-bounds warning\n\nIf get_num_sdma_queues or get_num_xgmi_sdma_queues is 0, we end up\ndoing a shift operation where the number of bits shifted equals\nnumber of bits in the operand. This behaviour is undefined.\n\nSet num_sdma_queues or num_xgmi_sdma_queues to ULLONG_MAX, if the\ncount is \u003e= number of bits in the operand.\n\nBug: https://gitlab.freedesktop.org/drm/amd/-/issues/1472"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-11T02:05:07.041Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/0c0356ef2498c1a250fe3846f30293f828737309"
        },
        {
          "url": "https://git.kernel.org/stable/c/1874b0ef1426b873de94c61861e38f29a8df714c"
        },
        {
          "url": "https://git.kernel.org/stable/c/3fdc5182700910a685d23df57d65166e8556a266"
        },
        {
          "url": "https://git.kernel.org/stable/c/9069b1b542de8f3bbffef868aff41521b21485cf"
        },
        {
          "url": "https://git.kernel.org/stable/c/50e2fc36e72d4ad672032ebf646cecb48656efe0"
        }
      ],
      "title": "drm/amdkfd: Fix UBSAN shift-out-of-bounds warning",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2021-4460",
    "datePublished": "2025-10-01T11:45:19.050Z",
    "dateReserved": "2025-10-01T11:38:13.842Z",
    "dateUpdated": "2026-08-11T02:05:07.041Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2021-4460",
      "date": "2026-09-17",
      "epss": "0.00159",
      "percentile": "0.05505"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2021-4460\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-10-01T12:15:31.850\",\"lastModified\":\"2026-08-11T03:17:33.890\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\ndrm/amdkfd: Fix UBSAN shift-out-of-bounds warning\\n\\nIf get_num_sdma_queues or get_num_xgmi_sdma_queues is 0, we end up\\ndoing a shift operation where the number of bits shifted equals\\nnumber of bits in the operand. This behaviour is undefined.\\n\\nSet num_sdma_queues or num_xgmi_sdma_queues to ULLONG_MAX, if the\\ncount is \u003e= number of bits in the operand.\\n\\nBug: https://gitlab.freedesktop.org/drm/amd/-/issues/1472\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"35cdc81bfa94d10373ecae279f3c48ca858ac4fd\",\"lessThan\":\"0c0356ef2498c1a250fe3846f30293f828737309\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"35cdc81bfa94d10373ecae279f3c48ca858ac4fd\",\"lessThan\":\"1874b0ef1426b873de94c61861e38f29a8df714c\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"35cdc81bfa94d10373ecae279f3c48ca858ac4fd\",\"lessThan\":\"3fdc5182700910a685d23df57d65166e8556a266\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"35cdc81bfa94d10373ecae279f3c48ca858ac4fd\",\"lessThan\":\"9069b1b542de8f3bbffef868aff41521b21485cf\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"35cdc81bfa94d10373ecae279f3c48ca858ac4fd\",\"lessThan\":\"50e2fc36e72d4ad672032ebf646cecb48656efe0\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"5.4\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"5.4\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.4.118\",\"lessThanOrEqual\":\"5.4.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.36\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.11.20\",\"lessThanOrEqual\":\"5.11.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.12.3\",\"lessThanOrEqual\":\"5.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.13\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H\",\"baseScore\":7.1,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.2},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H\",\"baseScore\":7.1,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.2}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2026-01-14T17:39:30.831800Z\",\"id\":\"CVE-2021-4460\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-125\"}]},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-125\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"5.4.118\",\"matchCriteriaId\":\"C5CD9030-BC07-4E5E-97CA-F7AC8E17FB90\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.5\",\"versionEndExcluding\":\"5.10.36\",\"matchCriteriaId\":\"003E22D0-CA29-4338-8B35-0754C740074F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.11.20\",\"matchCriteriaId\":\"EEC03413-9760-46D4-AC1D-EB084A1D4111\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.12\",\"versionEndExcluding\":\"5.12.3\",\"matchCriteriaId\":\"F9D6B2DE-7E4A-4B3B-9AEE-3A2C5F23DA32\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/0c0356ef2498c1a250fe3846f30293f828737309\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/1874b0ef1426b873de94c61861e38f29a8df714c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/3fdc5182700910a685d23df57d65166e8556a266\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/50e2fc36e72d4ad672032ebf646cecb48656efe0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/9069b1b542de8f3bbffef868aff41521b21485cf\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-29T22:44:30+00:00",
      "cve": "CVE-2021-4460",
      "id": "CVE-2021-4460",
      "initial_release_date": "2021-01-01T00:00:00+00:00",
      "product_status:fixed": "195",
      "product_status:known_affected": "16",
      "product_status:known_not_affected": "226",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: Linux kernel: integer overflow and information disclosure via undefined shift operation in drm/amdkfd",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-4460.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 7.1, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"HIGH\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2021-4460\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-01-14T17:39:30.831800Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-125\", \"description\": \"CWE-125 Out-of-bounds Read\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-01-14T17:39:26.550Z\"}}], \"cna\": {\"title\": \"drm/amdkfd: Fix UBSAN shift-out-of-bounds warning\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"4a488a7ad71401169cecee75dc94bcce642e2c53\", \"lessThan\": \"0c0356ef2498c1a250fe3846f30293f828737309\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"4a488a7ad71401169cecee75dc94bcce642e2c53\", \"lessThan\": \"1874b0ef1426b873de94c61861e38f29a8df714c\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"4a488a7ad71401169cecee75dc94bcce642e2c53\", \"lessThan\": \"3fdc5182700910a685d23df57d65166e8556a266\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"4a488a7ad71401169cecee75dc94bcce642e2c53\", \"lessThan\": \"9069b1b542de8f3bbffef868aff41521b21485cf\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"4a488a7ad71401169cecee75dc94bcce642e2c53\", \"lessThan\": \"50e2fc36e72d4ad672032ebf646cecb48656efe0\", \"versionType\": \"git\"}], \"programFiles\": [\"drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"3.19\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"3.19\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.4.118\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.4.*\"}, {\"status\": \"unaffected\", \"version\": \"5.10.36\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.11.20\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.11.*\"}, {\"status\": \"unaffected\", \"version\": \"5.12.3\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.12.*\"}, {\"status\": \"unaffected\", \"version\": \"5.13\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/0c0356ef2498c1a250fe3846f30293f828737309\"}, {\"url\": \"https://git.kernel.org/stable/c/1874b0ef1426b873de94c61861e38f29a8df714c\"}, {\"url\": \"https://git.kernel.org/stable/c/3fdc5182700910a685d23df57d65166e8556a266\"}, {\"url\": \"https://git.kernel.org/stable/c/9069b1b542de8f3bbffef868aff41521b21485cf\"}, {\"url\": \"https://git.kernel.org/stable/c/50e2fc36e72d4ad672032ebf646cecb48656efe0\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\ndrm/amdkfd: Fix UBSAN shift-out-of-bounds warning\\n\\nIf get_num_sdma_queues or get_num_xgmi_sdma_queues is 0, we end up\\ndoing a shift operation where the number of bits shifted equals\\nnumber of bits in the operand. This behaviour is undefined.\\n\\nSet num_sdma_queues or num_xgmi_sdma_queues to ULLONG_MAX, if the\\ncount is \u003e= number of bits in the operand.\\n\\nBug: https://gitlab.freedesktop.org/drm/amd/-/issues/1472\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.118\", \"versionStartIncluding\": \"3.19\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.36\", \"versionStartIncluding\": \"3.19\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.11.20\", \"versionStartIncluding\": \"3.19\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.12.3\", \"versionStartIncluding\": \"3.19\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.13\", \"versionStartIncluding\": \"3.19\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-12-20T08:50:43.244Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2021-4460\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-01-14T17:42:45.892Z\", \"dateReserved\": \"2025-10-01T11:38:13.842Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2025-10-01T11:45:19.050Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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.


Detection rules are retrieved from Rulezet.


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.