CVE-2026-97497 (GCVE-0-2026-97497)
Vulnerability from cvelistv5
Published
2026-09-24 16:04
Modified
2026-10-03 10:59
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: drm/amdkfd: Check bounds for allocate_sdma_queue restore_sdma_id allocate_sdma_queue has an option where the sdma queue id can be specified (used by CRIU). We weren't bounds-checking that value. Confirm it's less than the maximum number of queues.
References
Impacted products
Vendor Product Version
Linux Linux Version: 2485c12c980a36bb9e23ababb07d73c4ac6a45af
Version: 2485c12c980a36bb9e23ababb07d73c4ac6a45af
Version: 2485c12c980a36bb9e23ababb07d73c4ac6a45af
Version: 2485c12c980a36bb9e23ababb07d73c4ac6a45af
Version: 2485c12c980a36bb9e23ababb07d73c4ac6a45af
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{
  "containers": {
    "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": "41460d2dd0246f0ab7e80b103d34c8649e022999",
              "status": "affected",
              "version": "2485c12c980a36bb9e23ababb07d73c4ac6a45af",
              "versionType": "git"
            },
            {
              "lessThan": "25e1b29ecc8da3609ba0072ca54a3b1fdd1578f3",
              "status": "affected",
              "version": "2485c12c980a36bb9e23ababb07d73c4ac6a45af",
              "versionType": "git"
            },
            {
              "lessThan": "42f2bd50236b61ad0aeb2c233c990ee0d615fdad",
              "status": "affected",
              "version": "2485c12c980a36bb9e23ababb07d73c4ac6a45af",
              "versionType": "git"
            },
            {
              "lessThan": "dd2870ca036e1d51baa59f942007b36a595b5890",
              "status": "affected",
              "version": "2485c12c980a36bb9e23ababb07d73c4ac6a45af",
              "versionType": "git"
            },
            {
              "lessThan": "bfe9a7545b2a7be1c543f1741e16f2d5ec4116ae",
              "status": "affected",
              "version": "2485c12c980a36bb9e23ababb07d73c4ac6a45af",
              "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": "5.18"
            },
            {
              "lessThan": "5.18",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.189",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.158",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.111",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.53",
              "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": "6.1.189",
                  "versionStartIncluding": "5.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.158",
                  "versionStartIncluding": "5.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.111",
                  "versionStartIncluding": "5.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.53",
                  "versionStartIncluding": "5.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2",
                  "versionStartIncluding": "5.18",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdkfd: Check bounds for allocate_sdma_queue restore_sdma_id\n\nallocate_sdma_queue has an option where the sdma queue id can be\nspecified (used by CRIU). We weren\u0027t bounds-checking that\nvalue.\n\nConfirm it\u0027s less than the maximum number of queues."
        }
      ],
      "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 - The unbounded index is kfd_criu_queue_priv_data.sdma_id, copy_from_user\u0027d in kfd_criu_restore_queue() from AMDKFD_IOC_CRIU_OP KFD_CRIU_OP_RESTORE on /dev/kfd, then passed as restore_sdma_id into allocate_sdma_queue() by create_queue_cpsch()/create_queue_nocpsch(); no network protocol carries that field.\nAC:L - A single crafted KFD_CRIU_OP_RESTORE QUEUE object with type KFD_QUEUE_TYPE_SDMA or KFD_QUEUE_TYPE_SDMA_XGMI and an oversized sdma_id makes allocate_sdma_queue() run test_bit()/clear_bit() on that index; the attacker supplies the whole criu_restore() blob, so no race or victim-owned GPU state is required.\nPR:L - kfd_ioctl() admits AMDKFD_IOC_CRIU_OP only when capable(CAP_CHECKPOINT_RESTORE) or capable(CAP_SYS_ADMIN). CAP_CHECKPOINT_RESTORE is the delegated non-root capability already held by CRIU tooling and container checkpoint services, matching limited local privilege rather than init-namespace root.\nUI:N - The attacker opens their own /dev/kfd (kfd_open -\u003e kfd_init_apertures creates PDDs) and issues KFD_CRIU_OP_RESTORE against that process; no other user must mount media, open a file, or interact.\nS:U - allocate_sdma_queue()\u0027s OOB test_bit()/clear_bit() on the kzalloc\u0027d device_queue_manager sdma_bitmap corrupts host kernel slab inside amdkfd. That stays in the same kernel authority; it is not a KVM/Xen guest-to-host escape or an IOMMU/DMA bypass.\nC:H - restore_sdma_id is a user uint32_t used as the bit index into a KFD_MAX_SDMA_QUEUES (128-bit) dqm-\u003esdma_bitmap. test_bit() of an out-of-range index is an unbounded kernel-bit read (the ioctl returns -EBUSY iff the bit is clear), which is not a few-byte leak.\nI:H - When that out-of-range bit is set, allocate_sdma_queue() does clear_bit(*restore_sdma_id, dqm-\u003esdma_bitmap), a one-bit write at an attacker-chosen offset past the 128-bit map into later dqm fields (fence_addr, hung_db_array) or adjacent kmalloc objects, an OOB write.\nA:H - test_bit()/clear_bit() of a restore_sdma_id whose bitmap word is unmapped oopses inside allocate_sdma_queue(); the same OOB clear can smash dqm pointers and flags and panic the host."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-03T10:59:00.579Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/41460d2dd0246f0ab7e80b103d34c8649e022999"
        },
        {
          "url": "https://git.kernel.org/stable/c/25e1b29ecc8da3609ba0072ca54a3b1fdd1578f3"
        },
        {
          "url": "https://git.kernel.org/stable/c/42f2bd50236b61ad0aeb2c233c990ee0d615fdad"
        },
        {
          "url": "https://git.kernel.org/stable/c/dd2870ca036e1d51baa59f942007b36a595b5890"
        },
        {
          "url": "https://git.kernel.org/stable/c/bfe9a7545b2a7be1c543f1741e16f2d5ec4116ae"
        }
      ],
      "title": "drm/amdkfd: Check bounds for allocate_sdma_queue restore_sdma_id",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-97497",
    "datePublished": "2026-09-24T16:04:44.515Z",
    "dateReserved": "2026-09-24T16:01:01.150Z",
    "dateUpdated": "2026-10-03T10:59:00.579Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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